Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1995-04-28
1996-11-19
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333238, H01P 518
Patent
active
055766692
ABSTRACT:
A coupling device (100) for coupling RF energy on a transmission line (101) to a forward coupler (107) and a reverse coupler (113). The coupling device (100) includes a first coupling structure (121) and second coupling structure (125) which are parallel plate structures positioned a predetermined distance in a plane parallel to the transmission line (101), forward coupler (107) and reverse coupler (113). The first coupling structure (121) and second coupling structure (125) are used to increase the coupling coefficient and directivity of the forward coupler (107) and reverse coupler (113). One or more vias (139, 141) are used to connect forward coupler (107) and reverse coupler (113) to the first coupling structure (121) and the second coupling structure (125). The addition of the first coupling structure (121) and the second coupling structure (125) allow for a greater coupling efficiency without physically moving transmission line (101) towards either forward coupler (107) or reverse coupler (113).
REFERENCES:
patent: 3512110 (1970-05-01), Clar
patent: 4809356 (1989-02-01), Peckham et al.
patent: 5424694 (1995-06-01), Maloratsky et al.
Malherbe et al., Directional Couplers Using Semi-Re-Entrant Coupled Lines, Microwave Journal, Nov. 1987, pp. 121, 122, 124, 126 & 128.
Gensler Paul
Motorola Inc.
Scutch, III Frank M.
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