Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1992-02-12
1994-08-09
Hajec, Donald
Communications: radio wave antennas
Antennas
With radio cabinet
343749, 455 89, H01Q 124
Patent
active
053370619
ABSTRACT:
An antenna system for portable electronic apparatus, particularly for the handset of a cordless telephone system, and comprising two antenna, a first (shown) mounted on a flap (2) and comprising a groundplane 5 and active monopole 4 fed by a coaxial feed 6 from electronic circuitry (not shown) in the main section of the handset 1. The flap is pivotally connected to the main section of the housing 1, and is folded down against the main section when not in use. Another similar antenna is fitted in the main section, and both antennae are connected to the transceiver circuitry via the same node. The two antennae are specially designed so as to introduce deliberate mismatch so as to provide an effective switching system between the two antenna without the need for separate circuit elements.
REFERENCES:
patent: 4123756 (1978-10-01), Nagata et al.
patent: 4571595 (1986-02-01), Phillips et al.
patent: 4644366 (1987-02-01), Scholz
patent: 4827266 (1989-05-01), Sato et al.
patent: 4849765 (1989-07-01), Marko
patent: 4992799 (1991-02-01), Garay
patent: 5148181 (1992-09-01), Yokoyama
patent: 5184143 (1993-02-01), Marko
Pye Michael R.
Williams Stephen A.
Hajec Donald
Ho Tan
Shaye Communications Limited
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