High Frequency Half-wave Rectifier Based on Current Mode Technique

Abstract

This paper presents a CMOS high frequency half-wave rectifier based on current mode technique, which has a capacity for the frequency response up to 100 MHz. This circuit consists of three main components: 1) a new voltage to current circuit (V-I) is composed of two MOSFETs and two constant current sources; 2) a current mode half-wave rectifier that is applied from a class-AB current mirror circuit given by Kawahito and Tadokoro. This circuit is composed of six MOSFETs and two constant current sources; and 3) two current to voltage circuits (I-V) are composed of two resistors. In addition, the new 0.8 pm MOSFET technology has been applied in this research project.

In one experiment, the design circuit was simulated using the PSPICE program. The most important results reveal that the proposed circuit design provides high frequency response through employing low-level environments, both devices and power consumption. Two outputs of the proposed rectifier circuit are a positive and a negative half-wave rectifier outputs.