Miniature 60-GHz-band bandpass filter with 2.55-dB insertion-loss using standard 0.13 μm CMOS technology

In this article, we demonstrate a miniature low-insertion-loss 60-GHz-band bandpass filter by standard 0.13 mu m CMOS technology. Low-insertion-loss is achieved by adopting thick microstrip-line (MSL) with optimized ground-plane pattern as the needed inductors to minimize the metal and substrate loss. This filter achieved insertion-loss (I/S-21) lower than 3 dB over the frequency, range of 56.9-68.6 GHz, input return loss (S-11) better than - 10 dB over the frequency range of 53.4-71.9 GHz. and output return loss (S,.) better than - 10 dB over the frequency range of 53.2-70.9 GHz. The minimum insertion-loss was 2.55 dB at 62.5 GHz. To the authors knowledge, this is the best result ever reported for a 60-GHz-band CMOS bandpass filter in the literature. The chip area was only 0.175 X 0.194 mm(2), i.e. 0.034 mm(2), excluding the test pads. (C) 2009 Wiley Periodicals. the. Microwave Opt Technol Lett 51: 1632-1635, 2009; Published online in Wiley InterScience DOI 10.1002/mop.24426