Title :
High dynamic range double-balanced active mixers using lossless feedback
Author_Institution :
ATG Design Services, Tempe, AZ, USA
Abstract :
A further development in the application of negative feedback techniques to active double-balanced mixers is described, in which the concept of single-transformer lossless feedback is employed to improve both the intermodulation intercept point and the noise figure. A generalized topology is described, and test data describing and comparing the performance of example series-shunt and lossless feedback active mixers is presented
Keywords :
MMIC mixers; UHF mixers; bipolar analogue integrated circuits; circuit feedback; integrated circuit noise; intermodulation; mixers (circuits); double-balanced active mixers; generalized topology; high dynamic range; intermodulation intercept point; lossless feedback; negative feedback techniques; noise figure; single-transformer lossless feedback; Dynamic range; Negative feedback; Noise figure; Noise measurement; RF signals; Radio frequency; Topology; Transformers; Virtual colonoscopy; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.855991
