Log-Domain Quadrature Sinusoidal Oscillator based on Lossless Integrator and All-pass Filter

被引：0

作者：

Prommee, Pipat ^{[1
]}

Somdunyakanok, Montri ^{[2
]}

Angkeaw, Krit ^{[3
]}

机构：

[1] King Mongkuts Inst Technol Ladkrabang, Telecommun Engn Dept, Fac Engn, Bangkok 10520, Thailand

[2] Siam Univ, Fac Engn, Dept Elect Engn, Bangkok 10160, Thailand

[3] King Mongkuts Univ Technol Bangkok, Bangkok 10800, Thailand

来源：

2011 IEEE REGION 10 CONFERENCE TENCON 2011 | 2011年

关键词：

log-domain filtering; high-frequency; low-voltage; electronically-controlled; quadrature oscillator;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

A log-domain current-mode quadrature sinusoidal oscillator based on all-pass filter and lossless integrator is presented. The oscillator is realized by a first-order differential equation for obtaining all pass filter and lossless integrator. The proposed oscillator can be electronically tuned by adjusting bias currents. The proposed oscillator contains 18 NPN transistors, 2 grounded capacitors and 11 bias currents for achieving low-power and fast response. A validated BJT model is used in SPICE simulation operated from a single power supply as low as 2.5V. The oscillation frequency is controlled over four decades of frequency. The total harmonic distortion of signal output is obtained around 0.55%. The oscillation frequency can be operated more than 100MHz which enables fully integrated in telecommunication systems and suitable for high-frequency applications. SPICE simulation results are included.

引用

页码：685 / 688

页数：4

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