Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1993-08-23
1994-12-27
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333 21A, 333159, H01P 516
Patent
active
053769058
ABSTRACT:
A power divider (20) includes two orthomode tee to cylindrical waveguide adapters (26, 34) coupled by a phase shift unit (48) having a slow-wave structure (68) located in a sidewall (82) of a waveguide section (50) at a position located 45 degrees between planes of rectangular ports of the adapters. The slow-wave structure includes a set of vanes (54) which are movable by means of a motor (58) to adjust their penetration through the sidewall of the waveguide section. Adjustment of the penetration provides for selection of an amount of differential phase lag introduced between components of electromagnetic waves propagating through the waveguide section between the two adapters. Pins (96) are formed integrally with the vanes by a notching of edge regions of the vanes. The pins introduce a relatively small amount of phase shift as compared to that introduced by the vanes. However, the phase dispersion of the pins counteracts a phase dispersion of the vanes for increased bandwidth of the power divider. Adjustment of the phase shift provides for rotation of an electric vector for switching an exit point of an electromagnetic wave between either one of two output ports (30, 32) or for a division among the two output ports in any desired average power ratio.
REFERENCES:
patent: 2606248 (1952-08-01), Dicke
patent: 3668567 (1972-06-01), Rosen
patent: 4721930 (1988-01-01), Cohen
patent: 4755777 (1988-07-01), Cohen et al.
Denson-Low Wanda K.
Gensler Paul
Gudmestad Terje
Hughes Aircraft Company
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