Current compensation method for adjustment free stereo multiplex voltage control oscillator in FM receivers

Author

Loa, K.K. ; Ng, K.S. ; Hassan, A.R. ; Ma, J.-G. ; Yeo, K.S. ; Do, M.A.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

Volume

3

fYear

2000

fDate

2000

Firstpage

1256

Abstract

An alternative solution of an adjustment free stereo multiplex (MPX) voltage control oscillator (VCO) circuit is proposed. The design approach taken was the utilization of a compensation circuit to change the VCO charging/discharging current, and hence, the natural frequency (f_n). Manual adjustment of the external resonator was passed over which translated to a reduction in labor and timing cost

Keywords

compensation; electric current; frequency modulation; phase locked loops; radio receivers; voltage-controlled oscillators; FM receiver; VCO charging/discharging current; adjustment free VCO circuit; compensation circuit; current compensation method; natural frequency; stereo broadcasting; stereo multiplex VCO; voltage control oscillator circuit; Baseband; Circuits; Costs; Demodulation; Frequency division multiplexing; Frequency modulation; Phase locked loops; Timing; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2000. Proceedings of the 43rd IEEE Midwest Symposium on

Conference_Location

Lansing, MI

Print_ISBN

0-7803-6475-9

Type

conf

DOI

10.1109/MWSCAS.2000.951443

Filename

951443