A new technique for obtaining high isolations in microwave mixers based on the concepts of distributed mixing and transversal filtering

A new technique for obtaining high RF/LO to IF isolations in microwave mixers is reported. The technique is derived from the concepts of transversal filtering and distributed mixing. An MMIC prototype has been developed which measures only 1.4 mm/spl times/1.3 mm. Over 30 dB of RF/LO to IF isolations have been achieved at X-band and Ku-band.<<ETX>>

[1]  A. H. Aghvami,et al.  A Novel 1 to 14 GHz Monolithic Matrix Distributed FET Mixer , 1991, 1991 21st European Microwave Conference.

[2]  I.D. Robertson,et al.  A Novel MMIC Balanced FET Mixer with Superior Performance , 1994, 1994 24th European Microwave Conference.

[3]  Y. Tajima,et al.  A novel MMIC active filter with lumped and transversal elements , 1989, Digest of Papers.,Microwave and Millimeter-Wave Monolithic Circuits Symposium.

[4]  W. Jutzi,et al.  Microwave Bandwidth Active Transversal Filter Concept With MESFETs , 1971 .

[5]  C. Rauscher,et al.  Microwave Active Filters Based on Transversal and Recursive Principles , 1985 .