RF filter self-alignment for multiband radio receiver

Details RF filter self-alignment for multiband radio receiver RF filter self-alignment for multiband radio receiver

1991-09-06

1994-01-18

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Convertible to different type

455144, 4551891, 455340, H04B 1702, H04B 116

Patent

active

052806383

ABSTRACT:
A variable frequency RF passband filter is aligned or calibrated to maximize the sensitivity of a radio receiver using reference frequencies obtained using a fixed frequency oscillator present in a different band tuning section of a multiband receiver. The intermediate frequencies of the various band sections of the multiband receiver are selected whereby a fixed frequency source in one band corresponds to an intermediate frequency employed in the band for which the tunable RF filter is being aligned.

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