Communications: radio wave antennas – Antennas – Microstrip
Patent
1997-03-31
2000-09-05
Ho, Tan
Communications: radio wave antennas
Antennas
Microstrip
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.
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"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 .
Ho Tan
Ogrod Gregory D.
Qualcomm Incorporated
Thibault Thomas M.
Wadsworth Philip
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