Class A Power Amplifier

Thread Starter

sze wen

Joined Nov 8, 2020
11
How to design a Inductively-Loaded Class A Power Amplifier for 50 ohm @ 4.8 GHz using Cadence software? How to determine the sizing of transistor.
 

Papabravo

Joined Feb 24, 2006
22,058
How to design a Inductively-Loaded Class A Power Amplifier for 50 ohm @ 4.8 GHz using Cadence software? How to determine the sizing of transistor.
That's not much to go on. How about specifying the input and output power levels, and the available supply voltages. Also, why does it need to be class A. I've not seen many of those in at least a couple of decades.
 

Thread Starter

sze wen

Joined Nov 8, 2020
11
The i
That's not much to go on. How about specifying the input and output power levels, and the available supply voltages. Also, why does it need to be class A. I've not seen many of those in at least a couple of decades.
The output should be 16dBm. Supply voltage could be 1.8V
 

WBahn

Joined Mar 31, 2012
32,706
How to design a Inductively-Loaded Class A Power Amplifier for 50 ohm @ 4.8 GHz using Cadence software? How to determine the sizing of transistor.
Have you ever designed anything at that frequency?

The amplifier should be high gain enough. So there is a tradeoff.
What is "high gain enough"?

This is like going onto a car forum and asking how to design a car that must be light enough.
 

Thread Starter

sze wen

Joined Nov 8, 2020
11
Have you ever designed anything at that frequency?

Never. Not sure if it could work.


What is "high gain enough"?

This is like going onto a car forum and asking how to design a car that must be light enough.
30dB of gain should be good enough.
 
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