Multiband antenna with parasitically-coupled resonators

Details Multiband antenna with parasitically-coupled resonators Multiband antenna with parasitically-coupled resonators

2007-05-29

2007-05-29

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S815000

Reexamination Certificate

active

10843677

ABSTRACT:
A multiband antenna includes at least two resonators that are driven directly and resonate in different frequency bands and a parasitically coupled resonator that resonates in one of the frequency bands. The coupled resonator is grounded with a conductive trace at one end and is thus not directly fed by the RF feed of the antenna. The coupled resonator increases the efficiency bandwidth near the frequency of operation for the coupled resonator. The antenna is fabricated from a stamped metal that is bent around or overmolded by a spacer layer. A clip formed integrally with the antenna by bending a portion of the ground plane permits attachment to the metal shield of the display of a laptop computer and is thus grounded along its length.

REFERENCES:
patent: 5483246 (1996-01-01), Barnett et al.
patent: 6133883 (2000-10-01), Munson et al.
patent: 6476766 (2002-11-01), Cohen
patent: 2004/0137950 (2004-07-01), Bolin et al.

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