HIGH FREQUENCY BICMOS DESGIN BAED ON CURRENT CONTROLLED CONVEYOR

• Main Authors: Chou Shun-Chin, 周順欽
• Other Authors: Prof.. Yaw-Fu Jan
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/50283111910973952267

碩士 === 大同工學院 === 電機工程研究所 === 87 === Abstract When the mixed translinear loop is used in a voltage follower implementation, the value of its output resistance depends on its bias current. This property is used in realization of a current controlled conveyor, which has therefore its serial resistance on port X controlled by the bias current. The principal implementations for current controlled first-order transfer functions, operating both in voltage-mode and current-mode, are introduced. They require one or two of the controlled conveyors and capacitors only. Finally, the design three kinds of filters─lowpass, bandpass and highpass, operating in current-mode and voltage-mode, are also presented. Both in voltage and current mode, we can use dc bias to tune and get higher Q-factor. HSPICE simulation is used to verify this circuit, which is modeled by 0.5 high-speed CMOS and 0.8 Bipolar process parameters with 2.5V supplies.