Finding the combined output power of power amplifier in ADS

[sit_ec_2024]

We have designed both a single-stage power amplifier and a power amplifier using a power combiner, but we are not achieving suitable results. Please find the screenshots below for the circuit designs.

 

[BigBoss]

-Where are Output and Input Matching Circuits ?
-How did you define Optimum Load Impedance and for which purpose ?
-How do you desire to get an meaningful Output Power by driving the amplifiers with 0° Power splitter ? Who has given this idea to you ?
-How could you define the Operating Point by using which criteria you've used ?

Dear Friend,
You try to build an Power Amplifier @ 28GHz and you don't know basics of Designing of Power Amplifiers. You can not go on by asking everything in forums. You have to add some researches on it.

 

[sit_ec_2024]

We have designed a single stage power amplifier and we have got 32.492 dBm for input power of 33dBm. We have also designed a power amplifier by using power splitter and combiner at input but we are getting a output power less than input power. Please find the screenshots below for the circuit designs.

 

[narayani]

-Where are Output and Input Matching Circuits ?

You can connect input and output matching circuit and find output power.

-How did you define Optimum Load Impedance and for which purpose ?

By doing load pull analysis, you can find optimum load analysis later same is set at the load PA amplifier circuit.

-How do you desire to get an meaningful Output Power by driving the amplifiers with 0° Power splitter ?

You can connect 180 degree 3- dB hybrid coupler and try to combine output power as I have attached screen shot below for your reference.

-How could you define the Operating Point by using which criteria you've used ?

You can perform DC load line analysis to get the operating point Vds = 28 V and Ids = 20 mA.

 

[narayani]

Use 90 degree coupler instead of 180 degree coupler. 90 degree coupler is ideal one combining power

 

[volker@muehlhaus]

We have also designed a power amplifier by using power splitter and combiner at input but we are getting a output power less than input power.

For your single stange amplifier, you also got no power gain.

 

[BigBoss]

We have designed a single stage power amplifier and we have got 32.492 dBm for input power of 33dBm. We have also designed a power amplifier by using power splitter and combiner at input but we are getting a output power less than input power. Please find the screenshots below for the circuit designs.

No, you didn't design an "Amplifier", you designed an "Attenuator". It amplifies nothing but it attenuates. Don't you se that ?
My first recommendation :
Read !!

--- Updated Mar 3, 2024 ---

You can connect input and output matching circuit and find output power.

By doing load pull analysis, you can find optimum load analysis later same is set at the load PA amplifier circuit.

You can connect 180 degree 3- dB hybrid coupler and try to combine output power as I have attached screen shot below for your reference.

You will not answer to me, you will quote of topic owner.
Questions have been asked to topic owner. You confused..