High-frequency composite components comprising first and second

Details High-frequency composite components comprising first and second High-frequency composite components comprising first and second

1996-05-30

1998-09-29

Pascal, Robert J.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333176, 333185, 455338, H03H 701, H04B 118

Patent

active

058150528

ABSTRACT:
A high-frequency composite component used for a multi-band system, includes first and second circuits connected in parallel, the first and second circuits having infinite input impedances respectively at first and second frequencies, corresponding to first and second bands. Each of the first and second circuits includes a phase shifter, and a trap circuit connected as a load of the phase shifter. The phase shifter of each of the first and second circuits includes a strip line having a length of .lambda./4, wherein .lambda. is a wavelength corresponding to one of the first and second frequencies. The trap circuit of each of the first and second circuits includes a series resonance circuit, and the trap circuit resonates at one of the first and second frequencies.

REFERENCES:
patent: 2531419 (1950-11-01), Fox
patent: 4382238 (1983-05-01), Makimoto et al.
patent: 4910481 (1990-03-01), Sasaki et al.
patent: 5386203 (1995-01-01), Ishihara
patent: 5515015 (1996-05-01), Nakata
patent: 5525942 (1996-06-01), Horii et al.
patent: 5561406 (1996-10-01), Ikata et al.

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