Radio receiver for data communication

Details Radio receiver for data communication Radio receiver for data communication

1991-04-19

1993-07-20

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

455307, 455315, 375 12, H04B 110

Patent

active

052300951

ABSTRACT:
A radio receiver for data communication of the type handing digital signals has a radio frequency (RF) section for receiving an RF signal having a predetermined frequency band from an electromagnetic wave which comes in through an antenna. A first frequency converting section converts the RF signal received by the RF section to a first intermediate frequency (IF) signal. A first IF filter filters the first IF signal and is implemented by a surface acoustic wave filter. A second frequency converting section converts the output signal of the first IF filter to a second IF signal. A data amplifying section picks up the above-mentioned frequency band from the output of the second frequency converting section and amplifies the resultant, picked-up band. A detector detects the output of the data amplifying section. An equalizer corrects a deviation of group delay time with each of respective frequencies of the output of the detector.

REFERENCES:
patent: 3942118 (1976-03-01), Shiki
patent: 4726072 (1988-02-01), Yamashita et al.
patent: 5034994 (1991-07-01), Muterspaugh et al.

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