Patent ID: 8565698

Claim:
An integrated phase locked loop and power amplifier circuit comprising: a phase locked loop circuit configured to transmit an output frequency; a frequency translation block with high isolation coupled to the phase locked loop circuit configured to receive the output frequency, modulate the output frequency thereby forming a modulated frequency, and transmit the modulated frequency; a mixer coupled to the frequency translation block configured to receive the modulated frequency and an input signal, modulate the modulated frequency with the input signal thereby forming a modulated signal, and transmit the modulated signal; a power amplifier coupled to the mixer configured to receive the modulated signal, amplify the modulated signal thereby forming an output signal, and transmit the output signal; at least one first high isolation buffer coupled between the phase locked loop circuit and the frequency translation block and configured to receive the output frequency from the phase locked loop circuit and to transmit the output frequency to the frequency translation block; and at least one second high isolation buffer coupled between the mixer and the power amplifier and configured to receive the modulated signal from the mixer and to transmit the modulated signal to the power amplifier.