Radio network with switching arrangement for coupling radios to

Details Radio network with switching arrangement for coupling radios to Radio network with switching arrangement for coupling radios to

1990-02-02

1992-12-29

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

Plural separate transmitters or channels

455140, 4552771, 455281, H04B 700

Patent

active

051758784

ABSTRACT:
The antennas of a cellular telephone system are each connected to a signal divider/combiner array which/divides combines the antenna connecting path(s) into a plurality of antenna-radio/radio-antenna connecting paths. The divider array aspect is used for signal reception and the combiner array aspect is used for signal transmission. Each of these antenna connecting paths is connected to a controllable switch which in turn selectively couples it to/from a second plurality of radio transceivers. The antenna transmission/receive paths comprising the signal divider/combiners are embodied as strip type transmission lines in a multi layer PCB with all the paths having equal transmission losses. Micro vias are provided to permit electrical access to the various layers. The controllable switches are surface mounted on the outside of the PCB and are coupled to the various dividers/combiner through the micro vias. Remote control of the switches permits a radio channel unit of transceiver to be connected to any one of the array of antennas.

REFERENCES:
patent: 4395772 (1983-07-01), Trested, Jr.
patent: 4752968 (1988-06-01), Lindenmeier et al.
patent: 4761822 (1988-08-01), Maile
patent: 5033108 (1991-07-01), Lockwood
"Splitters and Hybrids Divide and Conquer High-Frequency Power", by J. Browne, Microwaves & RF, Oct. 1989.
"Phased Array Antennas", by A. A. Oliner & G. H. Knittel, Artech House, Inc., Jun. 1970, pp. 292-300.
"Advanced Mobile Phone Service: Control Archetecture", by Z. C. Fluhr & P. T. Porter, Bell System Technical Journal, vol. 58, No. 1, Jan. 1979, pp. 43-69.

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