Secondary radar antenna operating in S mode

Details Secondary radar antenna operating in S mode Secondary radar antenna operating in S mode

1993-07-02

1994-04-12

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Air traffic control

Secondary surveilance radar

342 39, 342372, 342158, G01S 1376

Patent

active

053029534

ABSTRACT:
This invention concerns a secondary radar antenna operating in S mode.
The antenna comprises a row of columns (1) of radiating elements powered by a hyperfrequency distribution circuit (2) containing a summing channel (.SIGMA.), a difference channel (.DELTA.) and a secondary lobe suppression channel (.OMEGA.), each producing a radiation diagram. The antenna end columns (L, R) each produce at least one auxiliary radiation diagram offset with respect to the diagram produced by the summing channel and contributing with the other antenna columns (1) to the creation of the other three diagrams.
Application: secondary radars in S modes in communication with a large number of aircraft per antenna revolution.

REFERENCES:
patent: 3801980 (1974-04-01), Danton et al.
patent: 4024538 (1977-05-01), Bishop
patent: 4853700 (1989-08-01), Funatsu et al.
patent: 4975708 (1990-12-01), Stayton
patent: 5034752 (1991-07-01), Pourailly et al.
patent: 5063386 (1991-11-01), Bourdeau et al.
patent: 5072224 (1991-12-01), Verbeke et al.
patent: 5196856 (1993-03-01), Litchford et al.

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