A 3.3 volt high-frequency capacitorless electronically-tunable log-domain oscillator

Author

Pookaiyaudom, Sitthichai ; Mahattanakul, Jirayuth

Author_Institution

Fac. of Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand

Volume

2

fYear

1995

fDate

30 Apr-3 May 1995

Firstpage

829

Abstract

A new type of electronically tunable oscillator using a cascade of two capacitorless first order log-domain all-pass filters as the frequency and the gain controlling element is proposed, where it is shown that the log-domain circuit technique is ideally suited for implementation of electronically tunable oscillators, The resulting oscillator enjoys several attractive properties, namely, low supply voltage, high oscillation frequencies, wide tuning range and relatively large oscillation levels can be obtained without excessive distortions, as oppose to previously reported forward-biased diode based electronically tunable oscillators

Keywords

all-pass filters; capacitance; circuit tuning; frequency control; gain control; radiofrequency oscillators; variable-frequency oscillators; 3.3 V; HF capacitorless oscillator; LV operation; capacitorless first order filters; electronically-tunable oscillator; frequency control; gain control; high oscillation frequencies; log-domain all-pass filters; log-domain oscillator; low supply voltage; wide tuning range; Capacitance; Capacitors; Diodes; Filtering theory; Frequency; Low pass filters; Low voltage; Total harmonic distortion; Tunable circuits and devices; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2570-2

Type

conf

DOI

10.1109/ISCAS.1995.519891

Filename

519891