Broadband short-horn antenna

Details Broadband short-horn antenna Broadband short-horn antenna

1993-07-16

1994-10-25

Hajec, Donald

Communications: radio wave antennas

Antennas

Wave guide type

333 26, 333248, H01Q 1300

Patent

active

053593391

ABSTRACT:
A short horn antenna (10) adapted for array use includes a rectangular waveguide with broad upper (12) and lower (14) walls and narrow side walls (16, 18), defining a radiating aperture (20) and a feed end closed off by a shorting plate (22). A stepped upper ridge (26) has a slot (50) adjacent the shorting plate, and a shorter stepped lower ridge (46) has a corresponding slot. An unbalanced transmission line (75) extends through the shorting wall, and the smaller conductor (76) extends into the waveguide as an electric probe (60). The probe includes a first portion (64), extending parallel to the waveguide axis (8) and into the slot in the upper ridge. The probe (60) also includes a second portion (66) extending at an angle (90.degree.) relative to the first portion (64) of the probe (60).

REFERENCES:
patent: 3478282 (1969-11-01), Smith
patent: 4500887 (1985-02-01), Nester
patent: 4651115 (1987-03-01), Wu
patent: 4737970 (1988-04-01), Viola et al.
patent: 4755828 (1988-07-01), Grim
patent: 4920351 (1990-04-01), Bartlett et al.
patent: 5111164 (1992-05-01), De Ronde
patent: 5122390 (1992-06-01), Rearick et al.
patent: 5148131 (1992-09-01), Amboss et al.
patent: 5227744 (1993-07-01), Sabatier
"Simulation of a Phased-Array Antenna In a Waveguide" by Hannan et al., pp. 342-353 of IEEE Transactions on Antennas and Propagation, May 1965.

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