Radio frequency noise reduction arrangement

Details Radio frequency noise reduction arrangement Radio frequency noise reduction arrangement

1996-10-10

1998-10-20

Crosland, Donnie L.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455296, 455280, 455303, 455304, 455137, 329336, 329327, H04B 110

Patent

active

058261818

ABSTRACT:
A frequency selective noise reduction circuit and finds application in receiver demodulator arrangements in mobile telecommunication base stations. A receive signal is divided into two paths. One path includes a Phase Lock Loop circuit (PLL) which is employed to identify noise. The noise signal is inverted and then combined with the other signal.

REFERENCES:
patent: 3480867 (1969-11-01), Sichak
patent: 4027264 (1977-05-01), Gutleber
patent: 4985684 (1991-01-01), Jentz et al.
patent: 5548838 (1996-08-01), Talwar et al.

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