POLAR RECEIVER USING INJECTION-LOCKING TECHNIQUE
First Claim
1. 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.
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Accused Products
Abstract
A polar receiver using injection-locking technique includes an antenna, a first filter, a first voltage-controlled oscillator, a first mixer, a frequency discriminator, a second filter, a third filter, a first analog-digital converter, a second analog-digital converter and a digital signal processing unit. Mentioned polar receiver enables to separate an envelope signal and a frequency-modulated signal from a radio frequency signal received from the antenna via the injection locking technique of the first voltage-controlled oscillator and the frequency discriminator. The envelope component and the frequency-modulated component can be digitally processed by the digital signal processing unit to accomplish polar demodulation.
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Citations
7 Claims
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1. A polar receiver using injection-locking technique comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification