The technology includes multichannel homodyne, reflection modulating without radio frequency source and beam powered by radio frequency energy.

The bit error rate of JTIDS is simulated and analyzed deeply by using the ZIF-ZCD (Zero-Intermediate Frequency Zero-Crossing Detection).

This paper proposed a novel mechanism of implementing an UHF RFID interrogator based on Embedded Platform,the receiver architecture used Zero-IF Detect Structure.

A low flicker noise mixer for zero-IF GPS receiver;

Design of a Zero-IF CMOS Mixer for WLAN Application;

Innovative Approaches for Testing Zero-IF Transceiver Devices;

I/Q imbalance digital compensation based LS method for OFDM zero IF receivers;

The topology combining super heterodyne and zero if for single chip implementation for FM SCA RF reception has been mainly proposed.

The merits of extremely low cost and high integration naturally make direct down-conversion (Zero IF) architecture the choice of solution for single-chip RF transceiver ICs, particularly for U-NII (Unlicensed National Information Infrastructure) band applications, such as high-speed wireless local area networks (WLANs,502.

In order to solve those problems,this paper introduces a distortion measure algorithm based on DFT and zero-crossing detection.

MCU get timing reference by zero-crossing detection.

Based on 89S52 single-chip microcomputer,the continuously variable power control is achieved by the AC single zero-crossing detection and the synchronous control of the thyristor’s turn-on angle.