Telecommunications – Carrier wave repeater or relay system – With frequency conversion
Patent
1982-03-31
1983-11-08
Ng, Jin F.
Telecommunications
Carrier wave repeater or relay system
With frequency conversion
455118, 455302, 455323, H04B 714, H04B 110, H04B 126
Patent
active
044146868
ABSTRACT:
A method for compensating nonlinearities of a transmission member in a radio relay transmission system by means of a linear converter having a linear gain characteristic and a harmonic generator converter having a nonlinear characteristic, in which an intermediate frequency signal modulated a useful signal is converted by a local oscillator signal into a radio frequency signal and the output signals of the two converters are linked together by a network. The method further includes: setting the operating point of the harmonic generator converter in a manner to cause its output signal to be essentially composed of components corresponding to the useful signal and to third order intermodulation products thereof; modifying the harmonic generator converter output signal by substantially suppressing the useful signal component from that output signal and setting the amplitude of the remaining third order intermodulation products component of that output signal; setting a relative phase position between the modified output signal of the harmonic generator converter and the output signal of the linear converter; and combining the modified output signal of the harmonic generator converter and the output signal of the linear converter subsequent to setting the relative phase position.
REFERENCES:
patent: 2964622 (1960-12-01), Fire
patent: 3202928 (1965-08-01), Prior
patent: 4346479 (1982-08-01), Weber
Licentia Patent-Verwaltungs-GmbH
Ng Jin F.
LandOfFree
Compensation of nonlinearities of transmission members in a radi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compensation of nonlinearities of transmission members in a radi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compensation of nonlinearities of transmission members in a radi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2013330