Phase compressor for phase modulated signal

Details Phase compressor for phase modulated signal Phase compressor for phase modulated signal

H - Electricity

04

N

329/11, 350/72,

H04N 9/12 (2006.01) H03C 3/02 (2006.01) H03D 3/18 (2006.01) H04N 9/66 (2006.01)

Patent

CA 1056495

ABSTRACT OF THE DISCLOSURE A phase compressor for a phase modulated signal com- prises n phase suppressors (n is an integer greater than 2), each of which includes an adder and a limiter. The n phase suppressors are connected in series with one another. In this case, outputs from the limiters of nth (n - 1)th, (n - 2)th, .... 2nd phase suppressors are individually sup- plied to the adders along with outputs from the (n - 1)th, (n - 2)th, .... 1st phase suppressors, respectively. A reference signal generator is connected to the adder as- sociated with the nth phase suppressor, so that the angular range of the phase-modulated signal at the circuit output terminal is phase-compressed by 1/(n+1) compared to the angular range of the modulated signal at the circuit input terminal. The phase-compressed signal is phase demodulated by a phase demodulator with out decreasing the signal-to-noise ratio.

237069

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