Antenna switching circuit suitable for a radio-frequency apparat

Details Antenna switching circuit suitable for a radio-frequency apparat Antenna switching circuit suitable for a radio-frequency apparat

1995-07-13

1998-09-01

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

With radio cabinet

455 89, 455 90, H01Q 124

Patent

active

058016619

ABSTRACT:
An antenna switching circuit for a portable radio-frequency apparatus, such as a portable telephone, provides an antenna switching circuit which enables switching of a radio-frequency signal path passing through an antenna, between a built-in antenna and an external antenna, and which increases the degree of freedom in arranging the components of the apparatus, which comprises a built-in antenna 3, an external-antenna connector 2a and a radio-frequency cable 6 serving as a path for radio-frequency signals, with an electrical control switch 11 for selecting either the built-in antenna 3 or the external-antenna connector 2a.

REFERENCES:
patent: 3781893 (1973-12-01), Beukers et al.
patent: 4958382 (1990-09-01), Imanishi
patent: 5121504 (1992-06-01), Toko
patent: 5255001 (1993-10-01), Tamura et al.
Matsushita Denki Kougyou Kabushiki Kaisha, Jan. 1994, Brochure of AX Type Connector.

Affiliated with

Also associated with

Rating

Antenna switching circuit suitable for a radio-frequency apparat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna switching circuit suitable for a radio-frequency apparat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna switching circuit suitable for a radio-frequency apparat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-274171