Wideband direct downconversion Gilbert mixer for 60 GHz applications

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Wideband direct downconversion Gilbert mixer for 60 GHz applications

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The design and the measurement results of a direct downconversion mixer for the 60 GHz ISM band are presented. Based on a Gilbert structure, the mixer is optimised for high bandwidth and designed in a 180 GHz SiGe technology. Without any buffer stages, the measured conversion gain is Gconv=−7 dB. The remarkably high IF bandwidth allows downconverting a continuous band of 15 GHz with flatness of ±1.4 dB and enables the design of ultra-high data rate transceivers.

Inspec keywords: transceivers; millimetre wave mixers; buffer circuits; bandwidth allocation

Other keywords: direct downconversion mixer; frequency 60 GHz; wideband direct downconversion Gilbert mixer; Gilbert structure; ISM band; buffer stages; conversion gain; ultra-high data rate transceivers; continuous band; IF bandwidth; frequency 180 GHz

Subjects: Microwave circuits and devices; Radio links and equipment; Modulators, demodulators, discriminators and mixers

References

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      • Dong-Hyun, K., Jae-Sung, R.: `A single-balanced 60-GHz downconversion mixer in 0.13 µm CMOS technology for WPAN applications', Proc. Int. Conf. Infrared, Millimeter, and Terahertz Waves, September 2009, Busan, South Korea, p. 1–2.
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