Demodulation arrangement for a radio signal

Details Demodulation arrangement for a radio signal Demodulation arrangement for a radio signal

2006-05-23

2006-05-23

Mis, David (Department: 2817)

Demodulators

Frequency shift keying or minimum shift keying demodulator

Input signal combined with local oscillator or carrier...

C329S300000, C375S334000

Reexamination Certificate

active

07049884

ABSTRACT:
A demodulation arrangement for a radio signal is disclosed wherein an I/Q mixer converts the radio signal to a real and an imaginary component and supplies the components to a limiting circuit. The limiting circuit limits the amplitude of the signals applied to its inputs. A demodulator circuit receives the output of the limiting circuit and converts the signal components to a demodulated signal including a sequence of pulses. A pulse shaper circuit converts the pulses having pulse amplitudes that are greater than a first threshold value to output pulses having a predetermined first amplitude. This reduces fluctuations in the pulse amplitudes, thus leading to a reduction in low-frequency interference and jitter in the data signal.

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patent: 0 723 335 (1996-07-01), None
patent: 2 137 836 (1984-10-01), None

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