Combline multiplexer with planar common junction input

Details Combline multiplexer with planar common junction input Combline multiplexer with planar common junction input

1996-01-16

1998-05-12

Pascal, Robert

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333203, H01P 1213

Patent

active

057511993

ABSTRACT:
A multioctave multiplexer (10) with multiple independent filter channels with a circuit topology that employs a planar circuit segment (18) and conventional combline resonator circuits (38), (40) and (42). The planar circuit segment (18) forms a common input (28) etched on a substrate and concurrently feeds RF signals to the independent channels (12), (14) and (16). The first planar circuit segment (18) comprises two unit elements (51) and (52) and a .pi.-section capacitor network (54), (56) and (58). The second combline circuit segment (38) comprises shunt resonators (38a), (38b), and (38c) and inter-resonator inductors (44a), (44b) and (44c) . The first and second circuit segments generate a number of transmission zeros on a complex plane that is 2 at DC, 2N-4 at one-quarter wavelength and 2 at the complex frequency of S=+/-1 in the complex plane. The planar common junction multiplexer provides the advantages of low manufacturing cost and the ease of assembly of the prior art without sacrificing any loss in performance and equivalent performance of the more costly high precision conventional combline resonator multiplexers.

REFERENCES:
patent: 3875538 (1975-04-01), Minet et al.
patent: 4091344 (1978-05-01), LaTourrette
patent: 4210881 (1980-07-01), Rubin
patent: 4450421 (1984-05-01), Meguro et al.
patent: 4513263 (1985-04-01), Minnis
patent: 5023579 (1991-06-01), Bentivenga et al.
patent: 5208565 (1993-05-01), Sogo et al.
patent: 5281934 (1994-01-01), Shiau et al.
patent: 5323127 (1994-06-01), Komazaki et al.
patent: 5428325 (1995-06-01), Jachowski et al.
Rhodes et al.; "MIC Broadband Filters and Contiguous Multiplexers", Proceedings of the 9th European Microwave Conference; Brighton, England, Sep. 17-20, 1979; pp. 407-411.

Affiliated with

Also associated with

Rating

Combline multiplexer with planar common junction input does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combline multiplexer with planar common junction input, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combline multiplexer with planar common junction input will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-984815