Title :
A 60dB Harmonic mixing reduction mixer for wideband applications
Author :
Li, Chin-Fu ; Huang, Po-Chiun
Author_Institution :
Department of Electrical Engineering, National Tsing Hua University, Hsichu 300, Taiwan
Abstract :
Mixers will suffer from harmonic mixing problem in wideband applications because these harmonics may be the inband interferences after down-conversion. In this paper, a linear current steering is used for harmonic mixing reduction instead of a RF tracking filter or poly-phase down-conversions. A simple but effective circuit topology we proposed can solve the harmonic mixing problem with less trade-off in linearity and noise figure. This circuit was realized in TSMC 0.18 mum CMOS technology with 4.8 mW power consumption. Measurement results indicate that the down-converted third-order harmonic interference can be rejected as large as 60 dB without any filters. Compared to conventional switching type, the proposed mixer has 43 dB rejection improvement.
Keywords :
CMOS integrated circuits; harmonics suppression; interference suppression; mixers (circuits); network topology; CMOS technology; circuit topology; harmonic mixing problem; harmonic mixing reduction mixer; inband interferences; linear current steering; polyphase down-conversions; power consumption; third-order harmonic interference; CMOS technology; Circuit topology; Energy consumption; Interference; Linearity; Noise figure; Nonlinear filters; Power harmonic filters; Radio frequency; Wideband; CMOS; DVB-T; harmonic mixing; mixer; wideband; wireless receiver;
Conference_Titel :
Microwave Symposium Digest, 2008 IEEE MTT-S International
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1780-3
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2008.4633227
