All-level Rayleigh fader

Details All-level Rayleigh fader All-level Rayleigh fader

1982-08-23

1984-08-07

Bookbinder, Marc E.

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

331 78, 364717, 455326, H04B 1700

Patent

active

044647913

ABSTRACT:
A Rayleigh fader for use with signals such as single-sideband and AM radio signals applies those signals to a 90-degree power divider. Each of the outputs of the power divider is taken to a separate double balanced mixer. Each separate double balanced mixer receives a mixing input from a noise source that includes a voltage-to-current converter. Mixed outputs of the two double balanced mixers are re-combined in a power combiner to produce a Rayleigh faded output.

REFERENCES:
patent: 3238472 (1966-03-01), Crompton-Couvela
patent: 4032850 (1977-06-01), Hill
IEEE Trans. on Vehicular Technology, vol. VT-29, No. 2, May, 1980, pp. 281-289, "A UHF Channel Simulator for Digital Mobile Radio", Edgar L. Caples et al.
"A Multipath Fading Simulator for Mobile Radio," by Arredondo et al., Published in IEEE Transactions on Vehicular Technology, vol. VT-22, No. 4, Nov. 1973, at page 241.

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