I have designed a Push pull power amplifer to deliverd a 500uwatt power to 50 ohm antenna.
the problem what i ma facing is that- when i am doing transient simulation and plotting the power at 50 ohm load i am getting 500uwatt power but when i am doing PSS analysis and plotting the output power it is showing 250uWatt. why this is so..
and what analysis should i do for efficiency and power added efficiency calculation.
Not really enough information to go on.
How are you plotting the power in each case? What exactly is your analysis setup? A few pictures would help.
I have to design a CLASS B push pull power amplifer. for the operating frequncy = 402 MHz, it should able to transfer 500uwatt power to 50 antenna. i am using Vdd =1.8V
using calculation i got RL=810 ohm.
i.e RL = Vdd ^2 /8*Pout = 810 Ohm. so i need a matching networt that can see 810 ohm from 50 ohm antenna. i am using Tapped Capacitor resonator, the values i got L = 2.393nH , C1 87.139pF , C2 = 263.59pF.
The design is atteched in figure. the think i need to know is
how to choose the value of coupling Capacitor Cdc as show in fig .
and also Cc and Rbias