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
收藏
页码：685 / 688
页数：4
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