Multi-band planar inverted-F antennas including floating...

Details Multi-band planar inverted-F antennas including floating... Multi-band planar inverted-F antennas including floating...

2005-09-13

2005-09-13

Wong, Don (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000

Reexamination Certificate

active

06943733

ABSTRACT:
A multi-band planar inverted-F antenna includes a floating parasitic element. For example, a planar inverted-F antenna includes first and second planar inverted-F antenna branches that extend on a dielectric substrate. The first planar inverted-F antenna branch is configured to resonate in response to first electromagnetic radiation in a first frequency band. The second planar inverted-F antenna branch is configured to resonate in response to second electromagnetic radiation in a second frequency band. The floating parasitic element is configured to electromagnetically couple to the second planar inverted-F antenna branch when, for example, the second planar inverted-F antenna branch is excited by the electromagnetic radiation provided via an RF feed (when the antenna is used to transmit). The floating parasitic element is also configured to electromagnetically couple to the second planar inverted-F antenna branch when the floating parasitic element is excited by electromagnetic radiation provided via free-space.

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