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## Lumped model of microstripline...

Can any one help, for getting lumped model of simple 50 ohm microstripline. if one port is connected to radial stub, what will be the change in model. Thanx in Advance

## Request of a paper on radial stubs

Dear collegues, I tried to search a lot on internet and microwave journal website but I was unable to found that paper. If any one has that paper kindly attach here Paper name is mentioned below H.A. Atwater, ``The Design of the radial line stub: A Useful Microstrip Circuit Element,'' Microwave Journal, 28, 149 (1985). thanks

## feed for vivaldi antenna

Hi, I am designing slot Vivaldi antenna for wide bandwidth.I am using strip line to slot line transition that used in the literature.The problem is using the radial stub to match the feed for entire bandwidth.I blindly using the slot radius and stub (feed) radius the return loss is coming only -5dB with (...)

## RF choke Implementation using Microstrip Lines

In additon to what enjunear has suggested: the next optional step is to replace the capacitor by a radial stub. Design the radial stub with radius = 1/4 wavelength, so that it represents a "short" at your frequency of interest. Together with the narrow 1/4 wavelength line, this is then transformed into an RF (...)

## Inductance selection for different frequencies

For this narrow bandwidth, you can use a narrow line with length 90° = 1/4 wavelength, followed by a 90° = 1/4 wavelength radial

Hello, i am designing a wideband LNA right now and would like to replace the Piconics conical inductors we are using right now with a planar Bias-Tee. My bandwidth is from 1-9 GHz so i cannot realize it with a quarter wavelength line and a radial stub. Is there a way to use a form of cascaded design with radial (...)

## Slotline simulation in CST MW 2008

Hello I have a problem with simulation slotline in CST MW 2008. Actually, I want to evaluate impedance of a slotline stub (radial and circular) but face a problem which is that line impedance doesn't depend on frequency how it should be. This obstacle leads wrong results in calculation Z parameters. I (...)

## how to design bias circuit using radial stub

dear frns.. one of most commonly used method for designing bias circuit is to use a radial stub followed by high impedance line... so frns can any one explain how to design radial stub, with center freq = 5GHZ, for bias circuit design....if any oe know about ieee paper (...)

## Design of DC bias network in GHz range

Hi, everyone. I am wondering how to design the DC bias network for varactor in GHz range. I saw many literatures using the radial stub with a very narrow microstrip line as the bias pads. Anyone has some recommendation references of this type of DC bias network and any other topologies? Thanks.

## Formula for RF choke (inductance) calculation

radial stub and high impedance transmission line is a good alternative.

## the boundary condition of microstrip line in CST?

I agree with the replies, and would just like to add something: You can follow the CST examples and implement their setup in your model (look for "radial stub microstrip"). Good luck, P.

## How to understand the bandwidth of radial stub?

You need to compare a radial stub connected directly to the line with a quarter wave with an open other end.