Title :
Automatic control of gain and phase deviations in a dual-branch receiver
Author_Institution :
Curtin Univ. of Technol., Perth, WA, Australia
Abstract :
A method of deriving the error signals for correcting the gain and phase deviations in a dual-branch receiver is described. This is based on separating the wanted signal and image signal components with an offset frequency between the transmitted carrier and the frequency of the first local oscillator. The correction process is adaptive and it operates continuously in the presence of modulation. A specific FM receiver architecture with remodulation has been chosen for illustration. However, the scheme described is also applicable for AM and single-sideband demodulation. The operation of the proposed scheme has been confirmed both by computer simulations and by experiments using a laboratory breadboard received
Keywords :
automatic gain control; phase control; radio receivers; telecommunications control; AM; FM receiver architecture; automatic control; dual-branch receiver; error signals; gain deviations; phase deviations; radio receiver; remodulation; single-sideband demodulation; Active filters; Automatic control; Band pass filters; Baseband; Demodulation; Dynamic range; Error correction; Frequency modulation; Land mobile radio; Receivers;
Conference_Titel :
Computer and Communication Systems, 1990. IEEE TENCON'90., 1990 IEEE Region 10 Conference on
Print_ISBN :
0-87942-556-3
DOI :
10.1109/TENCON.1990.152697
