Method of down converting high-frequency signals
First Claim
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1. A method of down-converting comprising:
- coupling a first high-frequency signal to a first detector and to a second detector;
receiving a received signal at an antenna;
providing the received signal to at least the first detector;
detecting the high-frequency signal and the received signal to produce a first detected signal including a first detected high-frequency signal and a demodulated signal;
concurrently detecting the high-frequency signal to produce a second detected high-frequency signal; and
subtracting the second detected signal from the first detected signal so as to cancel amplitude-modulated noise on a detected signal output, the detected signal output including the demodulated signal.
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Abstract
A method of down-converting couples a first high-frequency signal to a first detector and to a second detector. An antenna receives a signal and the received signal is provided to at least the first detector. The high-frequency signal is detected to produce a first detected signal including a first detected high-frequency signal and a demodulated signal. The high-frequency signal is concurrently detected to produce a second detected high-frequency signal. The second detected signal is subtracted from the first detected signal so as to cancel amplitude-modulated noise on a detected signal output.
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Citations
13 Claims
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1. A method of down-converting comprising:
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coupling a first high-frequency signal to a first detector and to a second detector; receiving a received signal at an antenna; providing the received signal to at least the first detector; detecting the high-frequency signal and the received signal to produce a first detected signal including a first detected high-frequency signal and a demodulated signal; concurrently detecting the high-frequency signal to produce a second detected high-frequency signal; and subtracting the second detected signal from the first detected signal so as to cancel amplitude-modulated noise on a detected signal output, the detected signal output including the demodulated signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification