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# Coupled And Microstrip

121 Threads found on edaboard.com: Coupled And Microstrip

## Enhancement bandwidth of Microstrip Patch Antenna

you could use the aperture coupled feed method and the multilayer method, and the bandwidth could reach 20%.

## tlt with ferrite sleeve

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 (...)

## Microstrip Coupled line filter design using Rogers Ro4003

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

## Implementation of series stub(open or short) using microstrip

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)

## Equivalent circuit of a dielectric resonator coupled to a microstrip line

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

## HFSS simulation for Wave ports of micrsotrip patch antenna( Results problem)

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 (...)

## Interdigital Bandpass Filter - Design procedure (Lancaster)

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 (...)

## Why normalize coupling matrix to FBW?

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 (...)

## cancel coupling between two microstrip structure in hfss

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

## designing Rectifier and filter circuit for RF energy harvesting

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

## microstrip filter simulation in hfss

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..

## Coupled microstrip lines simulation in ADS

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

## Spacing in a edge-coupled bandpass filter?

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?

## design waveguide port for aperture coupled antenna microstrip

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 (...)

## Microstrip Coupled line impedance matching

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 (...)

## synthesis tools for rat-race design

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 (...)

## Current capacity of a microstrip, how do you compute?

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 (...)

## Coupled Microstrip HFSS Simulation and Results

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 (...)

## Even- and odd-mode characteristic impedance design data for symmetric coupled...

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

## Coupled Line BPF Problem

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