Antennas employing U-dipole elements

Details Antennas employing U-dipole elements Antennas employing U-dipole elements

1997-02-21

1999-06-01

Wong, Don

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

H01Q 2112

Patent

active

059091959

ABSTRACT:
A low cost array antenna (10) employs U-dipole elements (30) inserted into slots in a printed circuit board (18). Board (18), supported in spaced relation directly by back reflector (12), bears a feed network (22) connected to an input/output port (24). The dipole element (30) is a dual-dipole single-feed element, including parallel coextensive dipole segments (32, 34) attached at one end, with a sole signal feed path via feed segment (36). Feed segment (36) is inserted into board (18) and soldered to a feed point of feed network (22). One or more mounting tabs (38) are also inserted into slots in board (18) and may be fixed in place by soldering to an isolated conductor portion provided on board (18) for this purpose. A dual array antenna (50) includes dipoles (51-54) for left slant polarization reception and dipoles (61-64) for right slant polarization reception. Receive diversity is thus provided for cellular communications, with vertical polarization for transmission via parallel use of both arrays (51-54, 61-64).

REFERENCES:
patent: 4800393 (1989-01-01), Edward et al.
patent: 5406295 (1995-04-01), Barinski et al.
patent: 5451971 (1995-09-01), Grossman et al.
patent: 5526003 (1996-06-01), Ogawa et al.
patent: 5532708 (1996-07-01), Krenz et al.
patent: 5724051 (1998-03-01), Mailandt et al.

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