trying to rf select power amplifier for the transmitter circuit which is implemented using bpsk modulation technique.
The first step is to determine the specification of the rf power amplifier according to the transceiver specifications.
The most important parameters of the transmitter power amplifier are:
The maximum rf output power
The carrier frequency
The bandwidth of the amplifier for tuned amplifiers
The one dB compression point
The third order intercept point
The power conversion efficeincy
The DC input power
The power supply voltage
The input impedance which is normally 50 ohm
and the output impedance which
is normally 50 ohm
After that you can select an amplifier which matches your requirements and specs from the that available in the semiconductor market
According to the power rating you can find:
integrated circuit amplifier,
amplifier modules
Or you can yourself design one using the proper transistor circuit with proper biasing and tuned circuits.
Best wishes
- the first step, you have to make sure that the components (eg amplifier transistors) should work at a frequency of 150 MHz,
- the second step, you must ensure that the strongest power works at a frequency of 150 MHz by taking into account the input impedance and amplifier output parameters,
- next step, you should make sure that the calculations on the amplifier tank circuit parts (eg, capacitor, inductor) match the frequency of 150 MHz
An important step is first to determine the class of operation. Switching mode RF amplifiers (like class E and class F) provide higher efficiency than continuous mode amplifiers like class A, B, AB or C. However, they give poor linearity performance when compared with class A or AB PAs. You can see my paper entitled "Design of Input Matching Networks for Class E RF Power Amplifiers" as a typical PA design case in 150 MHz.
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