Patent ID: 8498601

Claim:
A polar receiver using injection-locking technique comprising: an antenna configured to receive a radio frequency signal; a first filter electrically connected with the antenna and configured to receive the radio frequency signal and output an initial signal; a first voltage-controlled oscillator electrically connected with the first filter and configured to receive the initial signal and output an output signal, and the output signal has an oscillation frequency; a first mixer electrically connected with the first filter and the first voltage-controlled oscillator, wherein the first mixer combines the initial signal and the output signal of the first voltage-controlled oscillator to form a mixed signal; a frequency discriminator electrically connected with the first voltage-controlled oscillator and configured to receive the output signal of the first voltage-controlled oscillator and output a frequency signal; a second filter electrically connected with the first mixer and configured to receive the mixed signal and output an envelope signal; a third filter electrically connected with the frequency discriminator and configured to receive the frequency signal and output a frequency modulated signal; a first analog-digital converter electrically connected with the second filter and configured to receive the envelope signal and output a first digital signal; a second analog-digital converter electrically connected with the third filter and configured to receive the frequency modulated signal and output a second digital signal; and a digital signal processing unit electrically connected with the first analog-digital converter and the second analog-digital converter, wherein the digital signal processing unit receives the first digital signal and the second digital signal, and a demodulated output signal is obtainable by means of digital process of the first digital signal and the second digital signal.