End-fire array antennas with divergent reflector

Details End-fire array antennas with divergent reflector End-fire array antennas with divergent reflector

1996-10-28

1999-03-30

Wong, Don

Communications: radio wave antennas

Antennas

Antenna with parasitic reflector

343833, 343786, H01Q 1912

Patent

active

058894985

ABSTRACT:
An end-fire array antenna achieves improved performance with an array of radiative members that are arranged collinearly between an array first end and an array second end and a divergent reflector which is arranged collinearly with the radiative members. The radiative members are spaced to facilitate radiation and reception of electromagnetic signals in an antenna direction which extends from the array second end and the divergent reflector is spaced from the array first end to enhance this radiation and reception. A wall of the reflector preferably diverges from an antenna axis by an angle in the region of 24 to 48 degrees. The divergent reflector terminates in an open end which has a transverse width that preferably exceeds 1.4 .lambda..sub.dsgn wherein .lambda..sub.dsgn is the design wavelength of the antenna. In-service antennas are modified with a divergent reflector that is configured for coupling to an existing antenna back wall or antenna cup.

REFERENCES:
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patent: 5440319 (1995-08-01), Raymond et al.
patent: 5666126 (1997-09-01), Lange
Johnson, Richard C., et al., Antenna Engineering Handbook, McGraw-Hill, Inc., New York, third edition, chapter 2, p. 16, chapter 3, pp. 12-17 and chapter 12, pp. 16-17.

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