Planar antenna

Details Planar antenna Planar antenna

2011-02-08

2011-02-08

Cho, James H. (Department: 2819)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

C343S7000MS

Reexamination Certificate

active

07884774

ABSTRACT:
The present invention provides a wireless transmit/receive unit, comprising a feeding connecting line, a first radiating line, a second radiating line, a third radiating line and a fourth radiating line, wherein the third radiating line is longer than the first radiating line and the first radiating line is longer than the second radiating line that provides different current paths for getting a broader bandwidth. The first, second and third radiating lines are connected parallel for enhancing an antenna pattern being perpendicular thereto, and form a series capacity between the first and the third radiating lines. The fourth radiating line vertically connects between the third radiating line and a grounding line for forming a grounding capacity. The printed antenna can be reduced in size by the effect of the two capacities. The wireless transmit/receive unit can provide a better isolation with others by the direction enforced pattern and the reduced size.

REFERENCES:
patent: 6765539 (2004-07-01), Wang et al.
patent: 6847329 (2005-01-01), Ikegaya et al.
patent: 6961028 (2005-11-01), Joy et al.
patent: 6963310 (2005-11-01), Horita et al.
patent: 7042415 (2006-05-01), Cheng
patent: 7071877 (2006-07-01), Okado

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