Multi-frequency antenna with single layer and feeding point

Details Multi-frequency antenna with single layer and feeding point Multi-frequency antenna with single layer and feeding point

2005-03-22

2005-03-22

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S803000, C343S806000, C343S846000

Reexamination Certificate

active

06870506

ABSTRACT:
A multi-frequency antenna with a single layer and a single feeding point, and especially an improved microstrip antenna with its bandwidths simplified and enlarged, it has a central microstrip with a set length and a set width; the bottom end of the central microstrip is used as a feeding point, the top end thereof is extended bilaterally to form respectively a first band section and a second ban section. The first band section is provided on the end thereof with a first open circuit point, and the second ban section is provided on the end thereof with a second open circuit point. A grounding line of a set length and a set width is located at a position a distance below the feeding point on the bottom end of the central microstrip. The lengths from the feeding point to an open circuit point on the end of the first band section and to an open circuit point on the end of the second ban section are both ¼ λ of the ban section to be used.

REFERENCES:
patent: 3025524 (1962-03-01), Thies
patent: 5999142 (1999-12-01), Jang
patent: 6130651 (2000-10-01), Yanagisawa et al.
patent: 6317099 (2001-11-01), Zimmerman et al.
patent: 6329962 (2001-12-01), Ying
patent: 6630910 (2003-10-01), Forster et al.
patent: 6642893 (2003-11-01), Hebron et al.
patent: 20030006940 (2003-01-01), Washiro et al.

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