First-order Allpass Filters and Sinusoidal Oscillators Based on Current Conveyors
| Autor: | Jie-Mei Chu, 朱潔梅 |
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| Rok vydání: | 2003 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 91 Five sinusoidal oscillators and three quadrature oscillators based on second-generation current conveyors (CCIIs) are discussed in this thesis. Among the five sinusoidal oscillators discussed in this thesis, each of the first four sinusoidal oscillators is composed of one CCII+, one CCII-, two capacitors and two resistors. Two of the first four sinusoidal oscillators have the advantage of using grounded capacitors. The fifth sinusoidal oscillator is composed of three CCII+s, two capacitors and three resistors. This configuration contains high output-impedance current source that makes easy to drive loads without using any buffering device. By replacing the CCII+s and the resistors of the fifth oscillator circuit with CCCII+s, a new sinusoidal oscillator composed by three CCCII+s and two capacitors can be obtained. The oscillation condition and oscillation frequency of this new circuit can be independently controlled through input currents. The three quadrature oscillator circuits proposed in this thesis are composed by the non-inverting integrators and the first-order allpass filters with high input-impedance respectively. It is ideal for integration because these three circuits use only grounded passive elements. The oscillation conditions and oscillation frequencies of the oscillators proposed in this thesis are controllable through grounded passive elements. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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