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60 GHz bandpass filters with small and large bandwidths using thin film coupled microstrip in 0.18-μm CMOS

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7 Author(s)
Lan Nan ; Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore ; Mouthaan, K. ; Yong-Zhong Xiong ; Jinglin Shi
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In recent publications of millimeter wave filters in standard CMOS, only single designs have been shown, all with bandwidths exceeding 25%. Here we present the systematic design and implementation of 60 GHz bandpass filters with a broad range of bandwidths in a 0.18-mum CMOS technology. Experimental results show that filters with bandwidths larger than 50% achieve an insertion loss less than 3 dB. The insertion loss increases to 9 dB as the bandwidth decreases to 10%. Furthermore, the relationship between insertion loss and bandwidth is established through measurement and compared to theoretical predictions. The results facilitate important design trade-offs for bandpass filter in transceiver front-end applications.

Published in:

Microwave Conference, 2008. APMC 2008. Asia-Pacific

Date of Conference:

16-20 Dec. 2008