Radio relay system with a multiplex separation circuit and contr

Details Radio relay system with a multiplex separation circuit and contr Radio relay system with a multiplex separation circuit and contr

1993-07-15

1994-09-20

Kuntz, Curtis

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

370 951, 375 40, 379 59, 455 9, 455 16, 455 83, H04B 715, H04J 316, H04L 102, H04M 1100

Patent

active

053496949

ABSTRACT:
A radio relay system which comprising an external conductor, a first antenna installed on the externals conductor for transmitting and receiving a first radio carrier wave, a second antenna installed on the external conductor for transmitting and receiving a second radio carrier wave, a skirt provided around the second antenna, the skirt having a length equal to a quarter of the wavelength of the second radio carrier signal, and a relay device which includes a branching filter for extracting a part of the second radio carrier wave as a carrier wave, an adjusting unit for adjusting the amplitude and phase of the carrier wave extracted by the branching filter, and a combining unit for combining the carrier wave extracted by the branching filter with the second radio carrier wave received through the first antenna, and the relay device transmitting as the second radio carrier through the second antenna the first radio carrier wave received through the first antenna.

REFERENCES:
patent: 4284848 (1981-08-01), Frost
patent: 4481645 (1984-11-01), Karabinis
patent: 4577315 (1986-03-01), Otsuka
patent: 4599734 (1986-07-01), Yamamoto
patent: 4754495 (1988-06-01), Kawano et al.
patent: 4794649 (1988-12-01), Fujiwara
patent: 4894663 (1990-01-01), Urbish et al.
patent: 5010584 (1991-04-01), Seki
patent: 5179720 (1993-01-01), Grube et al.
patent: 5233626 (1993-08-01), Ames
patent: 5267297 (1993-11-01), Kawano et al.

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