Multi-band antenna

Details Multi-band antenna Multi-band antenna

2011-07-26

2011-07-26

Le, HoangAnh T (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000

Reexamination Certificate

active

07986274

ABSTRACT:
A multi-band antenna includes a ground portion, a radiating element spaced from the ground portion, a tuning conductor extending from the radiating element and parallel to the ground portion to form a gap therebetween, a short-circuit conductor interconnecting the ground portion and the radiating element, and a feed point disposed at the radiating element and adjacent to the short-circuit conductor. The radiating element, the short-circuit conductor and the feed point function as a first inverted-F antenna obtaining a first high frequency band, and a second inverted-F antenna obtaining a low frequency band and a second high frequency band higher than the first high frequency band. The ground portion and the tuning conductor cause a capacitance effect to shift the second high frequency band to be close to the first high frequency band. It can cover various wireless communication frequency bands.

REFERENCES:
patent: 2006/0082506 (2006-04-01), Fang
patent: 2009/0146906 (2009-06-01), Anguera Pros et al.
patent: 2009/0174611 (2009-07-01), Schlub et al.
patent: 2010/0149069 (2010-06-01), Kim

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