Television receiver with saw filter coupling utilizing a series

Details Television receiver with saw filter coupling utilizing a series Television receiver with saw filter coupling utilizing a series

1995-12-19

1997-07-15

Pascal, Robert

Telecommunications

Receiver or analog modulated signal frequency converter

With particular receiver circuit

455295, 333194, 310313B, 348731, H04B 116, H03H 964

Patent

active

056493134

ABSTRACT:
In a television receiver a SAW filter (FSAW) is preceded by a coupling network (CNW). The coupling network (CNW) includes an inductor (LP) between two input terminals of the SAW filter (IS1, IS2). It further includes a series resonance circuit (SRC) coupled to at least one of the input terminals (IS1). In order to reduce signal distortion a resistor (RP) is coupled between the two input terminals (IS1, IS2). Alternatively, a resistor (RS) is coupled in parallel to the series resonance circuit (SRC).

REFERENCES:
patent: 4063202 (1977-12-01), Vasile
Hazama et al., "Design and Mass Productive Fabrication Techniques of High Performance SAW TV IF Filter"; 1978 Ultrasonics Symposium Proceedings, IEEE Cat. #78CH1344-1SU; Cherry Hill, NJ, USA; 25-27 Sep. 1978; pp. 504-508.

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