3 GHz with the desired parameters return. 1b. Antenna design calculators category is a curation of 100 web resources on , HB9CV Online Antenna Calculator, Yagi Uda Antenna Online Calculator, RF Toroid Calculator. 43 GHz and 3. The patch cutout for the feed inset should be > 2 times the microstrip width. Note 688) Yagi Uda Antenna Designer (Rothammel/DL6WU) Filter Designer (Audio, AF) Lowpass Filters. The overall antenna size is 78 mm × 78 mm × 1. MICROSTRIP PATCH ANTENNA OF RECTANGULAR DESIGN A Rectangular Microstrip Patch Antenna is designed to operate at 5. Initially, theoretical calculation was performed,The UWB antennas are mainly divided into dielectric resonator antennas (DRA) 8,9, slot antenna 10,11, Vivaldi antenna 12,13, monopole antenna 14,15 and other microstrip patch antenna 16,17,18, etc. **Note: Like our stripline impedance calculator, all of our RF calculators allow SI prefix input. Bessel Lowpass Filter 24 dB/octave; Butterworth Lowpass Filter 24 dB/octave;Microstrip antennae are also used in the fields of RFID (radio frequency identification), mobile communication and healthcare. used to determine the radius of circular microstrip antenna. BWdeg=65/ (D/λ) where D is the dimension in the plane where you are estimating beamwidth and λ is, of course, wavelength in the same units. For this plane, the expressions for the radiated fields is given by 0 0 00 0 0 sin cos 2 cos sin 2 cos 2 jk r t eff kh k hWV e kL Ej r kh (7) The principal H-plane of the microstrip antenna is theHere you can find some references for microstrip patch antenna design. The microstrip impedance represents the characteristic impedance of the microstrip line, which is the uniform impedance provided by the uniform cross-sectional dimensions along the microstrip (flat copper conductor) length; to prevent signal reflection. 225mm above the ground plane and the optimized distance of second layer is 11. The Microstrip Patch Antenna Calculator is a powerful tool that enables engineers, students, and researchers to calculate the dimensions of a microstrip patch antenna quickly and accurately. Enter the relative permitivity, width of the trace, the ground plane spacing, and the substrate thickness to calculate the characteristic impedance. 54 GHz with 2. 1. Description. Basically, an RFID system consists of a tag and a reader. 3. A whip antenna also known as a monopole antenna looks capacitive if it is shorter than a quarter wavelength, and is tuned to resonance with. AdvantagesRead Microstrip Antenna Design Handbook_Ramesh Garg_2001',open Chap 4, sec. Depending on the relative locations between transceiver elements, RF power amplifiers, and the antenna or emitter, a via structure or a waveguide structure may be needed to route the signal. So, the Microstrip line was compared to an antenna, and it wasn’t until about 15 years later, when the Microstrip Patch Antenna was proposed, which was based on precisely the same concept. A better estimate of the frequency where the higher-order microstrip mode becomes a problem is given by Equation (4. Description. Microstrip Calculators. [1] It is a kind of internal antenna. By using such a short length of microstrip line, fundamental. Here's microstrip on 10 mil quartz. 95 mm and 80. Panel antenna “Double Ellipse-rectangle” for 3G/4G bands. 4 Aperture Coupling 3 Chapter Three: Methods of Analysis 22 3. 2 GHz. Consider the microstrip antenna shown in Figure 1, fed by a microstrip transmission line. ant = patchMicrostripTriangular (Side= [8e-3, 6e-3, 5e-3]); show (ant) In the above figure, the first value. Because they are not enclosed, these PCB microstrips have a lower power handling capability and higher loss, thus allowing you to calculate a microstrip’s height and. Microstrip Patch Antenna Calculator Calculate dimensions and edge impedance for desired resonant frequency. 7K views•29 slides. Also Configuration of Antenna with Double split ring metamaterial superstrate has been shown in Fig. The microstrip antenna has a light weight, low profile configuration, conformal structure, reliability, ease of. 7 dB and 6 dB. Most RF Coaxial Cables have an impedance of 50 ohms or 75 ohms. Microstrip Patch Antenna Design Amit Samanta. The vital target of this research article is to constitute the. 1. The links to other antenna calculators are also mentioned. f if the frequency of the RF signals. -. 123456. Activity points. Design of an antenna. Part 1 of this FAQ was a brief review of antennas and introduced to microstrip antenna design. Output is radius and effective radius of the circular patch Circular Patch Antenna CalculatorDESIGN DATA FOR YOUR LPDA. Firstly you had to determine target frequency and substrate material. 1 to 10. Rho: Conductor resistivity relative to copper. Z 0 = Characteristic Impedance of the overall system. Microstrip impedance calculator. 06/08/2009: EM Talk Store added - find discount microwave engineering components and devices. The defects on the ground plane disturb the current distribution of the ground plane; this disturbance changes the characteristics of a transmission line. The microstrip antenna, Part 1: Basics. Microstrip Patch Antenna Calculator; PCB Loop Antenna Calculator; Wokatenna Design; Yagi Uda Antenna Designer (NBS Tech. Calculate patch length and width for microstrip patch antenna using microstrip dielectric, height and frequency. The free-space directivity of a log-periodic dipole array (LPDA) is a function of its taper τ and its chosen spacing σ. 1. Microwave antennas and couplers, as well as some filters, can be created using the microstrip. Step 1: Calculation of the Width (W) -. 60. You can use this transmission line to connect two PCB components or to create components such as filters, couplers, and feeding elements of various types of antennas. The design is fabricated on the dielectric substrate FR4, which has the dielectric permittivity constant ofThe geometry of the designed microstripline feed microstrip patch antenna is as shown in fig. Pasternack's RF Calculators and Conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. 6 and 7. Modeling approximation can be used to design the microstrip trace. t is the Thickness of track (1 oz/ft2 = 0. In this research, a microstrip patch antenna design operating at 10 GHz frequency was carried out. The adaptability of microstrip antennas added new aspect to it. Note 688) Yagi Uda Antenna Designer (Rothammel/DL6WU) Filter Designer (Audio, AF) Lowpass Filters. Calculators. 45 for gold. Dear Prof. 6 mm. INTRODUCTION Microstrip antennas basically consist of a radiating patch on one side of a dielectric substrate, which has a ground plane on the other side. The design and analysis of the dual polarized aperture coupled antenna using Antenna Toolbox agrees well with the referred results. A microstrip width calculator can calculate the width of a microstrip. Panel antenna “Ellipse-patch 2х2” for 2100 MHz band. Large selection of online interactive calculators for RF design, including attenuators, capacitance, resonance, RF traps, and microstrip impedance. Thanks. director, dipole and reflector. (2023) developed a graphene based microstrip patch antenna in 0. This example shows how to create an AI model based inset-fed microstrip patch antenna at 4. 8), the ratio of W/H for fifty-ohm microstrip is about 95%. antenna can be rectangle, square, ellipse, circle, triangle,Find Microstrip Patch Antenna Calculator at CalcTown. In telecommunication, a microstrip. Here you can find some references for microstrip patch antenna design. HFSS Waveport Size Calculator Figure out the correct waveport size to use in HFSS for a microstrip line feed. Use the above equation to calculate the x-coordinate for the probe location. everything RF has created a series of RF calculators to help engineers and students with common calculations that they need to conduct frequently. For a quarter wavelength antenna, it becomes λ /4 to be fixed. 21 dB. The microstrip patch antenna model used for the numerical simulation in Ansoft HFSS is shown in Fig. 43. Electrical Length of Antenna. Microstrip Patch Antenna Calculator Calculate dimensions and edge impedance for desired resonant frequency. The Transmission Line model method. 5e9,ForAI=true) pAI = AIAntenna with properties: Antenna Info AntennaType: 'patchMicrostripInsetfed' InitialDesignFrequency: 4. Microstrip antenna. “468” is the constant used to convert frequency in MHz to feet. Suntsu Patch Antennas offer GPS and GLONASS communications serving the Smart grid, IOT, Enterprise, Automotive, Telecommunications, and Consumer Wireless Industries. 60x1. Microstrip patch antenna calculator; Antenna near field and far field distance calculator; Free space path loss calculator . Therefore doubling the thickness cuts the metal loss in half, but does nothing to loss tangent loss. Microstrip patch antenna. A microstrip patch antenna calculator. Going Forward with a Trace Impedance Calculator. The characteristic impedance (Z o) of coplanar waveguide with ground or microstrip lines with signal side ground plane can be calculated using the active calculator or the equations at the bottom of the page. Without truncated corners, the array has a single resonant frequency at 2. By inputting values such as the operating frequency, substrate thickness, dielectric constant, patch height, and patch width, users can calculate the. Library and Installation Install library PyQt5. with formulas, which were first derived for microstrip transmission lines, i. Three-element vector of Cartesian coordinates in meters. 1 GHz is selected and 401Microstrip antenna is one of the most applied antennas for various radio applications as its low profile and high performances. 3): fHigher-Microstrip = c/(4h εr − 1− −−−−√) = 10. but I'm looking at something that has formulas and i want to calculate the width of the feed line not the square patch. This paper provides details on how to investigate a new method of teaching microstrip patch antenna design made by Metamaterials using MATLAB by designing a friendly. 45 GHz. This work is mainly focused on increasing the gain. This paper presents development of microstrip antenna at frequency of 2. This calculator will help you calculate the guided wavelength, provided the dimensions of the microstrip are given as well as the velocity of propagation, the microstrip material's dielectric constant, and the input frequency. Pasternack PCB Microstrip Calculator is an online calculation tool that lets you compute a microstrip's height/width ratio, impedance and relative dielectric constant for a. The microstrip antenna characteristics include the following. Since the current has a sinusoidal distribution, moving in a distance R from the end will increase the current by cos (pi*R/L) - this is just. For this plane, the expressions for the radiated fields is given by 0 0 00 0 0 sin cos 2 cos sin 2 cos 2 jk r t eff kh k hWV e kL Ej r kh (7) The principal H-plane of the microstrip antenna is the Here you can find some references for microstrip patch antenna design. Starting from the general expression for the quality factor of a. Use our free online app Microstrip Patch Antenna Calculator to deztermine all important calculations with parameters and constants. The specified antenna. . So two estimates have been calculated for the frequency at which the first higher-order. Antenna Downtilt Coverage Radius Calculator is used to compute the inner & outer signal coverage diameter of any area by using the height of antenna, Downtilt angle and vertical beamwidth. Example, If Z 0 = 55 Ω, d = 6 mils and h = 4. The microstrip patch antenna calculator determines the length (L) and width (W) of a rectangular microstrip patch antenna for a given resonant frequency or vice versa. The feed line is given in lower substrate and the coupling between patch and feed is made through the slot (or) aperture in the ground plane. The patch antenna is designed for 2. The javascript starts with the minimum value of τ = 0. 5-GHz working frequency, a-18,573-dB return loss, a 144. The rectangular patch antenna has a return loss of -40. For example: F=10. php 9309 Bytes 31-05-2023 08:10:04. They develped a 1x2 microstrip patch antenna array based on photonic crystals. The microstrip antenna can be used on the Base Transceiver Station (BTS). This can. 6 mils line width, and the effective dielectric constant is 6. Sorted by: 1. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. Your valuable opinion : Avg. Hugo Pienaar. This example uses a Yagi-Uda antenna with the same dimensions as given in . 6. In this paper a slotted microstrip patch antenna has been designed that works for two frequencies 1. This project presents how to make a simple microstrip PCB Yagi-Uda antenna design based on the design procedures stated on the MATS-1000A Manual. offices email call. S-Parameter Analysis and Plotting; Active Circuit Bias Design; Cascade Noise and IP3 Analysis1,766. Electromagnetic band gap (EBG) structure is. How long is a VHF monopole antenna? The length of a VHF monopole antenna depends on the specific VHF. The rule of thumb is approx 1/3 of the distance between the two edges. 3) (4. An antenna is a device used to transform an RF signal, traveling on a conductor, into an electromagnetic wave in free space. 946 for silver, or 1. The javascript starts with the minimum value of τ = 0. For starter you can use standards like FR-4 substrate material with epsilon_r = 4. Our RF calculators and converters will provide the figures you need for your radio frequency engineering needs. Two points in space, specified as a 2-by-3 matrix corresponding to two three-element vectors of Cartesian. 5 GHz and calculate its resonant frequency. This helps in transfer of energy from transmitter module to antenna. Microstrip Impedance Calculator. In fact, striplines often make components such as band-pass filter's more accurately, with more symmetric roll-off and no lower cutoff frequency. PDF | In this paper, a new calculator form is designed to calculate all fundamental parameters for the microstrip patch antenna with the inset feed. It is possible to match the patch antenna from below 30Ω to above 200Ω. 7). Patch length, patch width are taken as optimization parameters. 575mm is used in the simulation process. A Brief Tutorial on Microstrip Antennas (Part 1) Download this article in PDF format. FR-4 (lossy) and Rogger RT/duroid, whose dielectric permittivity is 4. Accelerate innovation with Red Hat Enterprise Linux on Azure. 951 dB and bandwidth of 7. Synthesis is defined as to obtain the dimensions of microstrip patch while providing the resonant frequency, thickness, and dielectric constants of the dielectric material as the input parameters of ANN model (). Note that the "h", for dielectric thickness in this formula is omitted in some other Polar publications. They are mostly used at microwave frequencies. About Microstrip Patch Antenna Calculator The resource is currently listed in dxzone. smart antennas ppt santhu652. Advantages of Patch Antennas The unique property of the microstrip patch antenna is its two-dimensional structure. The fields surrounding an antenna are divided into 3 main regions: Reactive Near Field. ht. The calculator takes into account the wire diameter of the monopole and radials. 5 GHz for the patch with default dimensions. Developers can show information here about how their app collects. USA CHINA MALAYSIA INDIA ISRAEL UNITED KINGDOM. 38 GHz. Fairview Microwave's Microstrip Patch Antenna Calculator determines the length and width (in millimeters) of a rectangular patch antenna. Marino. The antenna achieves dual-band operation by digging two concentric annular-ring slots on the ground. Without truncated corners, the array has a single resonant frequency at 2. By default, the dimensions are chosen for an resonant frequency of 15 GHz. Microstrip lines are a type of transmission line commonly used in RF and microwave circuits due to their quasi-TEM mode of propagation and flexibility. The waveguide calculator makes it possible to calculate the TEmn / TMmn propagated modes for m = 0,1,2; n = 0. Scalene Triangle. on USAF Antenna Research and Development Program, October 1972. 02. The microstrip line is a commonly used transmission line configuration in high-frequency and microwave engineering. If the reflection coefficient (Γ) is known, then the VSWR. Keywords:The circular microstrip patch antenna's lowest mode is the TM 11 which produces a radiation pattern that is very similar to the lowest order mode of a rectangular microstrip antenna. Generally, it. 12. Due to space and resource constraints, amateur radio log-periodic antennas are often. Enter the Wavelength, Number of Turns and the space between each coil to calculate the Antenna Gain, wire diameter, Half Power Beam Width, Beam Width First Nulls and Effective Apperature. 3. 42MHz and 1598-1606MHz. In this course, we detail microstrip patch antenna array creation as a method of design. ‘c’ is propagation velocity within the air. The reactive near field ad the radiating near field. PLAY ANYWAY. 76. com +1 (718) 934 4500 +1 (800) 654 7949. Whip Antenna Design Calculator Daycounter, Inc. The features, advantages, limitations and the different types of feeding techniques are also discussed. **Note: Like our stripline impedance calculator, all of our RF calculators allow SI prefix input. Effect of changes in basic. For 25 ohms, we calculate 31 mils line width and 7. The formula used to calculate inductance of NFC rectangular antenna calculator are also mentioned. Posteriormente se procederá a realizar pruebas en una cámara anecoica en la cual se puede realizar mediciones. A simple method was used to design a microstrip flat reflect-array antenna. NFC circular antenna calculator dBm to Watt converter Stripline Impedance calculator Microstrip line impedance Noise. Note 688) Yagi Uda Antenna Designer (Rothammel/DL6WU) Filter Designer (Audio, AF) Lowpass Filters. undesired reactance at the antenna input and a relatively large probe self reactance [2], [3]. This design approach helps analyzer microstrip inset-fed patch antennas and helps to locate the exact inset length for 50-? input impedance. The substrate parameters. This paper presents a high-band microstrip antenna of dimension (5 × 5 × 1) mm 3 for 5G wireless mobile communications ranging up to 40–45 GHz. This concept was undeveloped until the revolution in. Light weight. A more conservative rule is to use a 2 inch (PCB track length)/nanosecond (rise/fall time) rule. Indeed, the frequency of 25 GHz is. The patch is generally made of conducting material such as copper and gold (Wikipedia, 2010). Following equation or formula is used for Microstrip Width Calculator. The dimensions of antenna can be found in the HFSS simulation file. 45 GHz. 0 mm. When playing, some cookies are set and your privacy is futschikato. 1. At high frequencies, the effect of substrate permittivity on antenna performance is dramatically higher than low frequency microstrip antennas. Where, P A = Power output of Port 2. Antenna “Flex” for 3G/4G & Wi-Fi. Created: 16 October 2022. 3 ( 1) eff. 06/08/2009: EM Talk Store added - find discount microwave engineering components and devices. The shape of the radiating patch exerts influence greatly on the performance of the microstrip patch. 946 for silver, or 1. The microstrip patch antenna calculator determines the length (L) and width (W) of a rectangular microstrip patch antenna for a given resonant frequency or vice versa. Electrical Engineering/Antennas and Propagation Microstrip Antennas The Analysis and Design of Microstrip Antennas and Arrays Microstrip Antennas contains valuable new information on antenna. Each student was assigned a unique frequency, 2. If the ratio (L/W) is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. A microstrip is created by etching a trace on a printed circuit board and is mostly used in microwave applications. The microstrip line is a commonly used transmission line configuration in high-frequency and microwave engineering. Noise Figure Calculator Calculate noise figure, gain, and noise temperature for a N-Stage cascade device. Microstrip Calculators Radar Calculators RF Calculators VSWR, Return Loss and Reflection Coefficient Calculators Waveguide Calculators Get the App All Conversion. Our RF calculators and converters will provide the figures you need for your radio frequency engineering needs. This dipole antenna calculator determines the size of a simple dipole antenna for a given frequency and the dipole wire diameter. To determine the width (W), the microstrip patch antenna calculator was used to provide an initial starting point. r r d r r. In telecommunication, a microstrip antenna (also known as a printed antenna) usually means an antenna fabricated using photolithographic techniques on a printed circuit board (PCB). In this paper one presents an analysis of the bandwidth of microstrip resonator antennas in function of the antenna parameters. Since the antenna is combined in three layers including squares and circles I'm not sure about the propagation polarization. With the truncated corners, the array as multiple frequencies with S11 less than or. 23 GHz. The microstrip patch antennas perform very well in terms of resonant fre-quency and impedance matching [4]. MICROWAVE CALCULATOR Free Mobile App for RF/Microwave Engineers. New Relic Instant Observability (I/O) is a rich, open source catalog of more than 400 quickstarts—pre-built bundles of dashboards, alert configurations, and guides—contributed by experts around the world, reviewed by New Relic, and ready for you to install in a few clicks. Helical or Helix Antennas transmit a circular polarized wave. Light weight. Patch antenna online calculator. It supports both balanced and unbalanced lines. 55mm ; the Thickness once finished is 35um. - Microstrip Patch Antenna Calculator - Wavelength Calculator - RF Power Density and many more. Keywords: Circular Microstrip Patch Antenna Design. Figure 2. **Note: Like our microstrip line impedance. It is excited via an edge-connected SMA at the end labeledIndex Terms-Microstrip patch antenna, MATLAB calculator, CST, 2. The microstrip antenna’s radiation pattern is shown below which lesser directivity has. Note that a quarter-wave length transformer was used to match the patch to a 50 Ohm feed line. Designing the antenna. This is achieved by designing a friendly graphical user interface (GUI) for. This research article describes the design of a circular-shaped microstrip patch antenna in detail. They are available in different configurations for various applications. Thickness: Thickness of the microstrip conductor. 12 ANNs have been applied for the development of an inset-fed. If the ratio (L/W) is close to unity, the radiation pattern will be symmetric but may not provide a resonable input impedance. Patch. In , the authors proposed a U-slot microstrip antenna design on a resonant frequency of 3. The dorminant TM 10 mode which the patch antenna radiates upward from the ground plane is excited byThe proposed microstrip Yagi-Uda antenna on photonic crystal substrate (with air gaps) operates frequency ranging from 5. 4 GHz-2. However, microstrips cannot handle power levels as high as waveguides can. In this paper, an inset feed rectangular microstrip patch antenna has been designed and simulated at the frequency of 3GHz and the dependency of antenna performance parameters like return loss, VSWR and other antenna parameters have been successfully studied with the variation of the notch gap using CST microwave studio. 6mm thick FR-4 dielectric substrate with dimensions of 46. Microstrip patch antennas are used for communication purposes especially in military and civil applications. 06/27/2007: EM Talk Blog added. How is monopole antenna length calculated? The length of a monopole antenna is calculated using the formula for a quarter-wavelength antenna: Antenna Length (in meters) = Speed of Light (m/s) / Frequency (Hz) / 4. . 4) Microstrip patch width : The width of the antenn- a affects the resonantImpedance matching Calculation of the patch Results Viewing Usages of some advanced features Use this website to calculate the dimensions of the patch. The patch cutout for the feed inset should be > 2 times the microstrip width. 2. 1 – 5 Decreasing σ will decrease the boom length L. This circular patch is fed by microstrip line and RT Duroid 5870 is used with the specified information include the. Microstrip Patch Antenna Calculator Calculate dimensions and edge impedance for desired resonant frequency. 3. The physical length of an antenna is the actual physical dimensions of the antenna. λ = Wavelength . 4 GHz with a fractional bandwidth of 12. abounding efficient models, improvements to microstrip antennas meet their competencies. 0. 2 permittivity and 1. The. Problem Definition 2. Bow Tie Antenna Calculation. We use an interpolation approach. 27 dB and VSWR of 1. The microstrip antenna can also be matched to a transmission line of characteristic impedance Z0 by using a quarter-wavelength transmission line of characteristic impedance Z1 as shown in Figure 2. 25mm off-center. There is also a dielectric material placed above the conductor. Chemandy Electronics. This paper provides details on how to investigate a new method of teaching microstrip patch antenna design made by Metamaterials using MATLAB. Antenna Calculators. The first layer is about. I'm trying to design a tunable microstrip combline filter with its initial f0 at 2. The microstrip antenna can also be matched to a transmission line of characteristic impedance Z0 by using a quarter-wavelength transmission line of characteristic impedance Z1 as shown in Figure 2. 0 dielectric would have a delay of about 270 ps. It will calculate the size, impedance, and bandwidth of a patch antenna: Use our microstrip patch antenna calculator Description. Below is an image of a Vivaldi antenna that we grabbed from U. By using different shape of slot the gain of microstrip patch antenna can also be improved and antenna straucture can be made more compact. 98. Microstrip Impedance Calculator. Go to our microwave calculator page, our microstrip calculator does this calculation for you! It's time for a Microwaves101 Rule of Thumb! For pure alumina (ε R =9. 09/08/2007: Online VSWR calculator added. It starts breaking down for low gain antennas (6-8 dBi) so use it with caution. As seen here:Here's a microstrip patch antenna calculator from Jonny: After downloading numerous MSExcel Spreadsheet calculators from MW101, I thought I might contribute one. The design is a microstrip. b) determine the physical dimensions (width-W1 and W2 and length-L1) of a rectangular microstrip patch. The formulas developed in Section 3. 6 dBi, the. 5. [3]The patch can come in many formats, but the most familiar are square and circular, because of the analytical, gin-like, attractive radiation properties, especially the shallow cross-polarity. 76. In this TI DN041 guide it says the following in section 4 Designing a Half Wae Dipole Antenna on a PCB: The width of the trace does have an impact on the antenna performance, particularly the bandwidth. In the circular case, instead of the operating frequencies being related to. Thickness: Thickness of the microstrip conductor. The antenna is designed using FEM based EM simulator software – Ansoft’s HFSS v13. The resonant frequency (rf) of a circular patch antenna is approximately given without considering the effect of probe radius by [1]: e r nm r a K c f 2S H * (1. In this antenna, one corner of the patch (or sometimes one edge) is grounded with a ground pin. To maximize signal strength between the transmitter and receiver, the antenna installer needs to keep the obstruction-free direct transmission. The Cavity model method. The antenna is fed by a 50 Ω microstrip line, and a quater wavelength transformer is used for the impedance matching. This design approach helps analyzer microstrip inset-fed patch antennas and helps to locate the exact inset length for 50-? input impedance. 2 enable the electrical characteristics to be determined given the material properties and the physical dimensions of a microstrip line. The microstrip antenna is a convenient, planar, easy-to-fabricate antenna with some attractive attributes and features, as well as some distinct limitations. This antenna is designed on FR-4 substrate and its. In fact, striplines often make components such as band-pass filter's more accurately, with more symmetric roll-off and no lower cutoff frequency. Relative Dielectric Constant ( εr ): Track Width (S):. II. When in doubt, use 1 for copper, . 0 mm. The dimensions of this. The length of the exciter is 139. Silva. Feed methods (antenna-transmission line interface) are critical for optimum performance. Re: Microstrip feed line. I got the equations from an article by Professor Ben Horwath at Santa Clara U (titled Microstrip Patch Antenna. 0mm to 25.