Title :
A novel dc-offset cancellation technique for even-harmonic direct conversion receivers
Author :
Matinpour, B. ; Chakraborty, S. ; Hamai, M. ; Chun, C. ; Laskar, J.
Author_Institution :
Microelectron. Res. Center, Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We present a novel dc-offset cancellation technique in antiparallel diode pair even-harmonic mixers for direct conversion receivers. Using fundamental equations we describe the contributions of diode mismatch to dc-offset and present a novel method for dc-offset cancellation using the 2/sup nd/ harmonic of the LO. Measurements confirm the equations and verify complete dc-offset cancellation using the proposed method.
Keywords :
microwave mixers; microwave receivers; DC offset cancellation; antiparallel diode pair; direct conversion receiver; even harmonic mixer; Capacitors; DC generators; Diodes; Dynamic range; Equations; Image converters; Microelectronics; Power harmonic filters; Topology; Voltage;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.863263
