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121 Threads found on Coupled And Microstrip
you could use the aperture coupled feed method and the multilayer method, and the bandwidth could reach 20%.
I need to design and simulate a tlt 4:1 (made for instance in microstrip technology) with ferrite sleeve around the microstrip inn 40MHz-250MHz bandwidth. Anyone can help me? If i use ADS i could use the model XFERTL2 and i'd just need to know the inductance without the sleeve and effective (...)
Hi everyone I have designed a coupled-line filter at X-band using Ro-4003 with 8mil of thickness. Rogers Software (MWI-2016) suggests dielectric constant of 3.81 for this substrate, this thickness, and at X band. this number has significant difference with popular dielectric constant for RF design using RO4003 (I mean 3.5
coupled lines, with various opens or shorts at the ends, can be used. Usually less than a quarter wave at midband. look around page 220 in mathei young and jones for approximate model ideas (these are TEM models, but are similar to the microstrip ones)
Hi! Everyone. I am a student from Taiwan. Please forgive me for my poor English. I have some question as title. I have already read some paper for DR these days. There are some questions bother me. Some paper says the equivalent circuit can be modelled by a transformer and a parallel RLC,but some says it can be modelled by a inve
I have to verify the results of a differential microstrip patch antenna of a research journal for my college project. The antenna consists of dual patches which are electromagnetically coupled (Antenna design attached). The simulated VSWR and gain plot are attached along with the simulated results of the paper. As you can see I am not (...)
Hello, I am following the design example of an interdigital filter with symmetric coupled lines as given in microstrip Filters for RF-Microwave Applications (Lancaster), page 141. I managed to calculate the characteristic impedances in even and odd-mode and, consequently, the coupling coefficients. My struggle is to (...)
Hello, I am going through "microstrip Filters for RF Microwave Applications 2nd Edition" by Hong, and am not entirely satisfied by the explanation of coupled resonator circuits (chapter 7). When analyzing these circuits, they quickly dive into forming an impedance matrix, which makes sense. But the next step is to normalize the nxn impedance (...)
coupling? well the balun is driving the spiral, so they are pretty "coupled" already! Why not add a disk of metal to the back of the spiral. it will prevent rearward radiation (where the balun is). In some antennas there are chokes to keep rf currents from going backward down the balun (which would make the balun part of the antenna radiation p
Hi, I am designing a RF energy harvesting circuit using ansys designer. i want to know how to design a rectifier circuit for Bluetooth and WIFI frequency range. can i get some tutorials related to designer components usage(regarding the microstrip bends, coupled bends etc.) Regards, Dinesh
Do u know how I could estimate the working frequency? Since I don't have any idea about dielectric material of the PCB, I cannot say anything.But coupled TLs have 7.40mm (?? ) and they should have a length of lamda/4. If we assume Er=4.5 ( FR4) the operating frequency may be 4.8GHz ??? It's hard to say something..
Hi, I am trying to do simulation of two coupled differential microstrip line pairs in ADS. I used model ML4CTL for variable width coupled microstrip lines. However, I am getting really strange results. For example having S21 of -6000dB. Schematic and results are attached. Can any body
Hi, I'm trying to design an edge-coupled bandpass filter. I've found Zoe, Zoo, W, and L. The only thing I'm having trouble with is finding the spacing. Is there a tool in ADS that will calculate this or is there a formula I have to use?
hello I want to simulate the aperture coupled micro-strip antenna, and i have the parameters of this antenna, just i want to know how to design waveguide port, i tried to use 3*wf X mt+5*hp:wf is width of feed line,and hp: high of substrate of patch, but for microstrip antenna,you know in this antenna, the feed line (...)
Your calculations is not exactly correct.Odd and Even mode impedances are valid only and only if there are 2 coupled lines.But if there are more than 2 coupled lines like in your filter structure , it's hard to say that formulae will still be valid in any case.You forget other interactions between-for instance- first element (...)
Is there any tool that synthesizes the design of directional couplers such as (rat-race, quadrature hybrid, ... etc) ? You know, find the width, length, ... of each tx segment. I already know a bunch of tools which do the work for microstrip and coupled lines but not couplers such as wcalc, appcad, txline awr, .. My problem is that I need (...)
Most small RF microstrip uses 1/2oz copper, meaning that weight of copper spread out over 1 sq ft. area. The 1 oz. option and thicker is always available, and more. You can have it very thick if you like. The microstrip impedance model has the thickness as a factor, but it is a very small effect unless you are using (...)
Hi everyone, I've been trying to simulate and analyze a coupled microstrip in HFSS. I got to the point where I might need some help because I'm having too many questions now and I can't really figure out my problem. The structure (please see attached HFSS file) comprises a ground plane, a dielectric, two copper (...)
Hi there I need even- and odd-mode characteristic impedance design data for symmetric coupled microstrip lines on a substrate with various Er. I found a design graph in Pozar's Microwave Engineering book, but it's for Er=10, I need design data for instance Er=4.6. Where can I find sth like this, can anybody help me? thx
Hi all, I am designing a coupled line microstrip BPF with center frequency of 1.67 GHz. The ideal simulation (with even and odd impedances) is great but when I shift to use microstrip lines, the response is worse. The point is that the filter response is such that it passes the frequencies in the range of double of its p