Telecommunications – Transmitter and receiver at same station – With tuning
Patent
1997-01-31
1999-10-05
Bost, Dwayne D.
Telecommunications
Transmitter and receiver at same station
With tuning
455 90, 455550, 455575, 343702, H04Q 720
Patent
active
059638532
ABSTRACT:
A radio communications unit that has a casing includes an antenna that is connected to a signal processing unit. A metal object is placed in the casing and connected to an impedance. The antenna receives a radio signal which has repeating fading moments where the signal strength C is exceedingly low. The signal processing unit includes a unit for controlling a switch and impedance unit. In their simplest form, these control devices are manual, although they may alternatively comprise devices that are integrated in the signal processing unit which controls the activation of the metal object and the impedance with control signals. When the antenna is situated in a fading minimum, the metal object is either connected to or disconnected from the impedance unit, resulting in new signal reflections that cause the fading minimum to be moved away from the antenna.
REFERENCES:
patent: 4890114 (1989-12-01), Egashira
patent: 5030963 (1991-07-01), Tadama
patent: 5337061 (1994-08-01), Pye et al.
patent: 5467097 (1995-11-01), Toko
patent: 5541610 (1996-07-01), Imanishi et al.
patent: 5689821 (1997-11-01), Shimazaki
patent: 5710984 (1998-01-01), Millar et al.
Almgren Magnus
Berg Jan-Erik
Bost Dwayne D.
Maung Nay A.
Telefonaktiebolaget LM Ericsson
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