Compact, ultra-wideband, antenna feed architecture comprising a

Details Compact, ultra-wideband, antenna feed architecture comprising a Compact, ultra-wideband, antenna feed architecture comprising a

1997-06-30

2000-06-13

Wong, Don

Communications: radio wave antennas

Antennas

Wave guide type

343785, H01Q 1302

Patent

active

06075494&

ABSTRACT:
A true-time-delay corporate feed that minimizes both scan- and frequency-dependent variations in driving point impedance by realizing and exploiting a folded ensemble of intentionally mismatched E-plane tee junctions, E-plane steps, and E-plane bends that are used to form the antenna feed. A selected arrangement of E-plane tee junctions, E-plane steps, and E-plane bends are interconnected between a line-source interface that receives RF power and a plurality of line-source interfaces that couple the RF power to radiating stubs of a continuous transverse stub antenna array. The impedance of the individual mismatched components are set to be essentially constant and purely real, such that the feed network ensemble behaves as a multi-stage transformer, efficiently matching dissimilar radiator (load) and line-source (source) impedances over a broad range of operating frequencies and scan angles.

REFERENCES:
patent: 2628311 (1953-02-01), Lindenblad
patent: 2822541 (1958-02-01), Sichak et al.
patent: 3277489 (1966-10-01), Blaisdell
patent: 5642121 (1997-06-01), Martek et al.

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