10 MHz CMOS OTA-C voltage-controlled quadrature oscillator
暂无分享,去创建一个
A quadrature-type voltage-controlled oscillator with operational transconductance amplifiers and capacitors (OTA-C) is presented. A monolithic integrated CMOS test circuit is introduced to verify theoretical results. The attainable frequency range of oscillation of the chip test circuit is 3-10.34 MHz. The total harmonic distortion (THD) is 0.20-1.87% for corresponding peak-to-peak amplitude voltages between 100 mV and 1 V. This amplitude can be controlled either by using a diode connection of two MOS transistors or a proposed nonlinear resistor. >
[1] K. Pahlavan,et al. Multipath propagation measurements on manufacturing floors at 910 MHz , 1989 .
[2] Arthur Gelb,et al. Multiple-Input Describing Functions and Nonlinear System Design , 1968 .
[3] Phillip E Allen,et al. CMOS Analog Circuit Design , 1987 .