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I have completed design of my LNA at 2.1 and 4.6GHz. Thanks to edaboard members for your help.
Now I am checking port parameter(s11, s21, s22) with help of Agilent's VNA.
But i am not getting notches at desired frequencies.
s11 is better at 1.6GHz and s22 is better at 1.2 and 1.6GHz.
I have...
Hi to everyone.
This is my first post on this group.
Can anyone clear the following doubts.
I am designing MSA for GSM 900/1800.
I want to know, how we can calculate feed line dimesion.
....
And simulation result shows negative gain, what it indicates?
How to increase surface current on...
thank you bigboss ,
i have got results by designing matching network using distributive element and without any bias circuit.....
.....
can u tell me, how a matching network is designed to terminate the harmonics specially 3rd for LNA?
Thanks and Regardd
Actually i have used s2p file for 2V and 5mA.
As u suggest, without matching network i got the results with 2.9dB gain.
And the gain provided at 50ohm termination is above 12dB.
...
I want to know
What is problem when matching network is attached?
& Thank u.
I have designed LNA at 2.4GHz with Input and Output matching networks.
I am not getting proper gain, vswr and NF ALSO due to some silly mistakes.
Point out the mistakes...
Thanks and Regards
I am designing LNA at 2.4GHz using ATF541432a. I have designed matching circuitary on input and output side.
Now i am left with Bias Circuit design.
How can i calculate values of L(for RF block) and C(to block DC)?
And if i do voltage divider circuitary then will it affect noise performance of...
i am designing a lna using Avago's transistors using Microwave office AWR.
Doing a simulation using s2p file.
i hav 4 file with different Id and Vd values and using one of them at Vd=3v and Id=40mA.
but not getting proper I-V curve.
........Please anybody help me out that..
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