A Direct Down-conversion System Using Sub-harmonic Mixer with Microstrip Lines

DOI

10.2991/amee-17.2017.35How to use a DOI?

Keywords

direct down-conversion system; sub-harmonic mixer; zero intermediate frequency; Voltage Controlled Oscillator (VCO); Phase-locked Loop (PLL); Defected Ground Structure (DGS); microstrip line

Abstract

The purpose of this paper is to design a direct down-conversion system using sub-harmonic mixer with microstrip lines, it is also called a zero intermediate frequency system. By utilizing the direct conversion configuration, it can not only avoid to use an additional voltage controlled oscillator and phase-locked loop which resulted from twice down conversions so as to simplify the configuration and reduce cost, but also suppress the mirror image frequency, and thus to diminish non-linear conversion distortion and to increase the receive dynamic range. The LO-RF and LO-IF isolations of sub-harmonic mixer with microstrip lines are greater than 60 dB, and the conversion loss is about 14 dB; the phase noise of VCO with spiral-shaped defected ground structure (DGS) is -96 dBc/Hz at 10 kHz. We have succeeded to develop a direct down-conversion system.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Yu-Chang Lin
AU  - Wen Ko
AU  - Ming-Wei Hsu
AU  - Man-Long Her
PY  - 2017/09
DA  - 2017/09
TI  - A Direct Down-conversion System Using Sub-harmonic Mixer with Microstrip Lines
BT  - Proceedings of the 2017 2nd International Conference on Automation, Mechanical and Electrical Engineering (AMEE 2017)
PB  - Atlantis Press
SP  - 167
EP  - 174
SN  - 2352-5401
UR  - https://doi.org/10.2991/amee-17.2017.35
DO  - 10.2991/amee-17.2017.35
ID  - Lin2017/09
ER  -