A 77-GHz CMOS On-Chip Bandpass Filter With Balanced and Unbalanced Outputs

• Published in: IEEE electron device letters Vol. 31; no. 11; pp. 1205 - 1207
• Main Authors: HSU, Cheng-Ying, CHEN, Chu-Yu, CHUANG, Huey-Ru
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.11.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 77 GHz; Applied sciences; Balanced and unbalanced; Balancing; balun filter; bandpass filter; Bandpass filters; Bandwidth; Circuit properties; CMOS; CMOS integrated circuits; complementary metal oxide semiconductor (CMOS); Design. Technologies. Operation analysis. Testing; Devices; Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Exact sciences and technology; Frequency filters; Impedance matching; Integrated circuits; Loss measurement; Metals; millimeter-wave; Noise levels; on-chip; open loop resonator; Oscillators, resonators, synthetizers; Passband; Semiconductor device modeling; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Signal convertors; Simulation; Splitting; System-on-a-chip; Performance evaluation; Resonator; Return loss; Microwave; 77 GHz; Balanced and unbalanced; Balun; band-pass filter; on-chip; millimeter-wave; Implementation; balun filter; Millimetric wave; Complementary MOS technology; open loop resonator; Insertion loss; Open loop; Band pass filter; Signal converter; Passband; complementary metal oxide semiconductor (CMOS)
• ISSN: 0741-3106; 1558-0563
• DOI: 10.1109/LED.2010.2068536

This letter presents the design and implementation of a 77-GHz millimeter-wave on-chip bandpass filter with balanced output that was fabricated using a TSMC 0.18-μm standard CMOS process. The performances of the single-ended and single-ended-to-differential bandpass filters are simulated and measured. The chip size of the designed filter is 0.55 × 0.7 mm 2 . The simulated and measured results of the proposed filter are found to be in good agreement. The filter has a 3-dB bandwidth of about 14 GHz at a center frequency of 77 GHz. The measured insertion loss of the passband is about 6 dB and includes a 3-dB splitting loss; the return loss is less than 10 dB within the passband.