Voltage-controlled double-resonance quartz oscillator using variable-capacitance diode

Author

Ruslan, Ruzaini Izyan Binti ; Satoh, Tomio ; Akitsu, Tetsuya

Author_Institution

Interdiscipl. Grad. Sch. of Med. & Eng., Univ. of Yamanashi, Kofu, Japan

Volume

59

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

738

Lastpage

745

Abstract

In this work, we present a variable-frequency quartz crystal oscillator that is able to oscillate at LC resonance under frequency locking of a quartz crystal resonance, with the frequency tuning realized by variable-capacitance diodes. This circuit shows a steep transition between LC oscillation modes to quartz crystal double-resonance, which shows a characteristic change in the oscillation frequency. Control voltage of this diode is precisely adjusted from the low side to higher values and conversely in the vicinity of the oscillation mode transition. The transition of the oscillation modes is experimentally demonstrated and compared with an algebraic analysis.

Keywords

circuit tuning; crystal oscillators; semiconductor diodes; voltage-controlled oscillators; LC resonance; double-resonance quartz oscillator; frequency locking; frequency tuning; quartz crystal resonance; variable-capacitance diode; variable-frequency quartz crystal oscillator; voltage-controlled oscillator; Capacitance; Crystals; Oscillators; RLC circuits; Resistance; Resonant frequency; Voltage control;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2012.2251

Filename

6189180