瞬时缩展模拟CMOS高频连续小波变换电路

Analog CMOS High-Frequency Continuous Wavelet Transform Implementation by Instantaneous Companding Circuit

小波函数和小波变换网络的瞬时缩展技术综合是电网络综合的新理论、新方法.本文利用对数域电路实现连续小波变换,提出的模拟CMOS高频连续小波变换电路能实现高频输入信号的时频分解,电路中的振荡器电路采用的是完全的电流模式对数域电路.并由此对数域振荡器设计和实现电流模式锁相环,从而提出了模拟连续小波变换的电路设计和实现.结果显示电路能在低电压低功率时得到宽动态范围的运用.

Instantaneous companding synthesis of wavelet functions and wavelet transformation is a new theory and method of circuitry theory. A CWT was realized by using log-domain circuits. An analogue CMOS high-frequency continuous wavelet transformation circuit has been proposed to perform a time-frequency decomposition of a high-frequency input signal. The oscillator in the circuit was a log-domain oscillator. The result showed that the circuits got a wide range in low-voltage low-power.