Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1987-12-16
1989-04-04
LaRoche, Eugene R.
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333137, 333157, 343853, 343778, 342153, H01P 518
Patent
active
048189588
ABSTRACT:
A compact, dual series waveguide feed network is disclosed which has application to monopulse radar antennas and is usable in applications requiring compact and light weight feed networks. The network in accordance with the invention uses phase shifters at the phase reversal points of the secondary (42) feed lines to establish a 180.degree. relative phase difference with the corresponding phase reversal point of the primary feed line. No phase shifters are used in the crossguide feed lines (44). Because of the invention's phase shifter arrangement, crossguide lines (44) may be located directly opposite each other instead of being staggered as in prior techniques; hence the size of the network is reduced and resolution is increased. Also, the primary and secondary feed lines may be located closer together because there are no phase shifters with associated matching and transition devices located in the crossguide feed lines. Tuning is simplified because of the fewer number of phase shifters used and simple waveguide tuning screws may be used in one embodiment.
REFERENCES:
patent: 2667620 (1954-01-01), Riblet
patent: 2981948 (1961-04-01), Kurtz
patent: 3434139 (1969-03-01), Algeo
patent: 3453636 (1969-07-01), Perini et al.
patent: 3518576 (1970-06-01), Algeo
patent: 3824500 (1974-07-01), Rothenberg
patent: 3906502 (1975-09-01), Connolly
patent: 3924206 (1975-12-01), Fassett
patent: 4303898 (1981-12-01), Kinsey et al.
Lopez, Alfred R.; "Monopulse Networks for Series Feeding an Array Antenna"; IEEE Transactions on Antennas & Propogation; vol. AP-16, No. 4, Jul. 1968; pp. 436-440.
Lange William L.
Lee Kuan M.
Livingston Stan W.
Hughes Aircraft Company
Karambelas A. W.
LaRoche Eugene R.
Lee Benny T.
Runk Thomas A.
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