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A diode mixer with harmonic-distortion suppression

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2 Author(s)
Mitra, S.G. ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; Maas, S.A.

It is shown that terminating the second and third LO harmonics and associated mixing frequencies in a short circuit results in substantial reduction in a diode mixer's harmonic distortion. It was found experimentally that the second-harmonic distortion level dropped a maximum of 28.7 dBm, and the third-harmonic distortion level also dropped a maximum of 16 dBm. The practical possibility of improving IM distortion levels is established. This technique should prove valuable in the lowering of IM distortion levels of diode mixers.<>

Published in:

Microwave and Guided Wave Letters, IEEE  (Volume:2 ,  Issue: 10 )