Increased bandwidth patch antenna

Communications: radio wave antennas – Antennas – Microstrip

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Details

343702, H01Q 138, H01Q 124

Patent

active

061149969

ABSTRACT:
An increased bandwidth patch antenna which includes first and second arms spaced by an air gap. The first and second arms are electrically connected by a bridge. A ground plane, which is approximately parallel to the first and second arms, is separated from the first and second arms by a dielectric substrate. In one embodiment of the present invention, the first arm is a radiating arm and the second arm is a tuning arm. By varying the length of the tuning arm, the bandwidth of the antenna is increased. The second arm, which also acts as a parasitic arm of the first arm, increases the gain of the antenna. A signal unit is electrically coupled to the bridge. The signal unit transmits and/or receives signals having a selected frequency band. The antenna resonates at the selected frequency band.

REFERENCES:
patent: 4040060 (1977-08-01), Kaloi
patent: 5075691 (1991-12-01), Garay et al.
patent: 5365246 (1994-11-01), Rasinger et al.
patent: 5420596 (1995-05-01), Burrell et al.
patent: 5614915 (1997-03-01), Webb
patent: 5644319 (1997-07-01), Chen et al.
patent: 5680144 (1997-10-01), Sanad
patent: 6008762 (1999-12-01), Nghiem
"Internal Broadband Antenna for Hand-held Terminals with Reduced Gain in the Direction of the User's Head" by Fuhl et al.; Institute of Electrical and Electronics Engineers, vol. 2, No. CONF. 45, Jul. 25, 1995, pp. 848-852.
"2 GHz Compact Antennas on Handsets" by C. Sabatier; Institute of Electrical and Electronics Engineers, vol. 2, Jun. 18, 1995, pp. 1136-1139 .

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