High frequency communication device

Details High frequency communication device High frequency communication device

2005-03-01

2005-03-01

Vannucci, James (Department: 2828)

Communications: radio wave antennas

Antennas

Plural antennas spaced a fractional or full wave length apart

C343S702000, C174S034000

Reexamination Certificate

active

06862001

ABSTRACT:
A high frequency communication device which can reduce undesired electromagnetic coupling inside and outside a box thereof in which circuit parts constituting a transmitter-receiver circuit are contained.Periodic structures (6) are provided on at least a part of a wall constituting a box (1, 4, 5) so that the periodic structures (6) serve as a filter which has a non-propagating frequency band corresponding a frequency band covering an undesired electromagnetic emission inside the box. Thus, undesired electromagnetic emission energy from any electromagnetic emission source can be confined locally to prevent a possible problem of electromagnetic interference.

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Proceedings of the APMC98 Conference TU1A-3 “An Integrated Millimeter Wave MMIC Transceiver for 38GHz Band” (1998).
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Front page photograph of the Catalog of M/A-Co. U.S.A., issued 1996.
Proceedings of the APMC98 Conference TU1A-1 “A Cost-Effective RF-Module for Millimeter-Wav Systems” (1998).

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