Search Engine www.edaboard.com

# Quarter Wavelength Transformer

8 Threads found on edaboard.com: Quarter Wavelength Transformer

## which lambda is used while using quarterwave transformer on microstrrip line

The quarter wavelength line refers to a quarter wavelength in the transmission line (your λ_new). Similarly, the quarter wavelength in free space refers to λ_0. In microwave engineering, many properties scale proportionally with electrical length, hence that is often used (...)

## CST MW studio simulating receiver

Hi Guys, I have been given a project to simulate a receiving array of patch antennas. At the moment i am using a single circular patch that is matched using a quarter wavelength transformer. The design is super simple but as i have never used CST until now i am finding a few things a little difficult and would appreciate some help. I (...)

## quarter wavelength transformer

in my dual band filter (f1=1.8GHZ and f2=5.4 GHZ) can i use quarterwave transformer instead of dual frequency transformer for impedance matching? is there any other possible way to match the impedances..?

Hi, I am reading quarter-wavelength transmission line transformer on an article: The Yin-Yang of Matching: Part 2?Practical Matching Techniques. I do not understand the second sentence about 22%. This percentage is regarding to which bandwidth? It gives as an example of the first sentence, i.e. for ratio 6:1, it is narrower? I do not (...)

## quarter-wavelength transformer design with IE3D in mm-wave

hi, everyone. I am doing a printed circuit design in 60GHz range. The basic structure is 2-dielectric substrate tapes with 3 copper layers on top/in between/ on bottom. The total thickness is 203um+406um=609um, and with DK=3.55. Structure: copper ----------------- Rogers 4003 ----------------- copper ----------------- Rogers 400

## Chamfer size of T junction in IE3D to design patch antenna?

Hi all, Now I am using IE3D to design an patch array antenna at 60 GHz and need to design a T junction. The output arms have characteristic impedance of 50 ohm with the corresponding width of 0.21988 mm, and the input arm has a quarter-wavelength transformer whose characteristic impedance of 35.56 ohm with the corresponding width of (...)

## stub matching vs quarter wavelength transmission line

quarter wave length transformer is used only for real impedance matching but stubs are used for any case

## matching of 200W power device

I find a paper (please see attached) which describes a 200W power amplifier design. The paper mentioned it use two-stages matching circuits consists of a quarter wavelength microstrip line impedance-transformer. But I can not understand the matching network. Why there is a slot at input port ? Does it use wilkinson couplers to (...)