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IEEE Microwave and Guided Wave Letters
Volume 10 Number 11, November 2000

38/76 GHz PHEMT MMIC Balanced Frequency Doublers in Coplanar Technology

Page 484.

Abstract:

Two 38/76 GHz push-push frequency doublers have been realized in a 0.15 µm GaAs PHEMT technology. The circuits are based on different 180° power divider structures: a Lange coupler followed by a 90° transmission line, and a balun. The circuits achieve maximum conversion gains of -4 and -6 dB for 12 and 14 dBm input signals, respectively. The fundamental suppression is approximately 30 dBc in both cases. To our knowledge,these results represent the best performance reported up to date for W-band balanced doublers.

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