Microwave amplifier design using ADS

Hi, I want to design a microwave amplifier that meets the following specifications : gain of 10dB±0.1dB, frequency range of 2kHz to 4GHz, S11 and S22 should be less that -15dB, input/output impedance should be 50Ω.

Please, I need help to get a suitable circuit for this design .

Thanks

Distributed Amplifier.

Practically impossible..
Flatness is amazing... Return loss is very tight for whole band..
Distributed amplifiers can not give you those specifications...

Gain ripple within +/-0.1dB might be too severe.
But more wide frequency band distributed amplifiers have been used as Submarine Optical Transimission Amplifier.
Their gain ripple is within +/-0.5dB for more wide frequency range.

We talk about 21 octaves bandwidth...
No one can realize this amplifier with these specifications..
Distrubuted amplifers are really sensitive structures.The matching between the active parts can not be realized even they are selected carefully.
In additional to this, temperature effects will shift the characteristics and return losses will be very poor..
The layout of this amplifier is not practically possible...
The distributed amplifiers can be realized upto 8-10 octaves bandwidth..
Remember Fano's limits...

Absolutely wrong.
For example, see the paper belowHere Gain flatness of +/-0.75dB over DC-58GHz can be realized.
Resonance of Package Cavity causes degradations of frequency flatness.

Specification for S11,S22,S21 in this thread can be satisfied easily, if frequency range is DC-10GHz, although S21 is 9dB not 10dB.

Right.

In distributed amplifier, Bode-Fano Criteria is not so useful.
The Designer's Guide Community Forum - help needed on wideband matching

Again more wide frequency band distributed amplifiers have been used practically as Submarine Optical Transimission Amplifier.

Gain flatness

NOT

in your sample paper..
S11

-10dB NOT -15dB in your sample
S22 is much worse ..

-8dB NOT -15dB
and also They used a special 0.15

pHEMT technology that is not available for public..

So that"s I'm saying this is practically impossible..OK ?
I hope you understood now..

What on earth do you see ?

Surely see DC-10GHz.
Specifications can be satisfied there.

I did Peer Review of this paper in 1993.
And author of this paper gave me more detail presentation after ISSCC 1994.
That is a reason why I could show this sample paper very quickly.

Still you are absolutely wrong.
You seem to be not familiar with "distributed amplifier".

Again this amplifier is pratically used in NTT(Nippon Telegraph and Telephone Corporation) of Japan.

"distributed amplifier" under 10GHz is not so rare.
They are used also in broad band oscilloscope.

Almost all developer of "distributed amplifier" have used special devices extensively without exception.

To begin with, "distributed amplifier" itself is very special amplifier.

Again you seem to be not familiar with "distributed amplifier".

OK..I'm essentially a groceryman...

申明：网友回复良莠不齐，仅供参考。如需专业帮助，请学习易迪拓培训专家讲授的ADS视频培训课程。