Proximity-coupled folded-J antenna

Details Proximity-coupled folded-J antenna Proximity-coupled folded-J antenna

2007-06-26

2007-06-26

Phan, Tho (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S7000MS

Reexamination Certificate

active

11273973

ABSTRACT:
A Proximity Coupled-Folded-J Antenna PC-FJA (104) includes a ground plane (240), first resonant element (352) with a “J” shape that resonates at a first radio frequency, a second resonant element (350) positioned within the “J” shape and that resonates at a second radio frequency, and a third resonant element (118) with a portion that is substantially parallel to and removed from the plane of the “J” shape and that resonates at a third radio frequency. The PC-FJA (104) has a fourth resonant element (130) with a loop (132) in a plane perpendicular to and removed from the plane of the “J” shape. The fourth resonant element (130) resonates at a fourth radio frequency. These elements are ohmically coupled to a connection arm (108). The ground plane (240) is removed from PC-FJA (104) and is perpendicular to the plane of the “J” shape.

REFERENCES:
patent: 4628322 (1986-12-01), Marko et al.
patent: 6759990 (2004-07-01), Rossman
patent: 6943730 (2005-09-01), Poilasne et al.
patent: 6956530 (2005-10-01), Kadambi et al.
patent: 7072690 (2006-07-01), Shin et al.
patent: 7084813 (2006-08-01), Pathak et al.
patent: WO 2004/025778 (2004-03-01), None

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