Performance enhancement of 0.18µm CMOS on chip bandpass filters using H-shaped parasitic element

A design of an improved open loop resonator on-chip bandpass filter for 60 GHz millimeter-wave applications using 0.18 μm CMOS technology is presented. The proposed on-chip BPF employs H-shaped parasitic structure inserted between two open loop coupled resonator. The adoption of a two open loop coupled resonators BPF and the utilization of two transmissions zero located at 48 and 80 GHz permit a compact size and high selectivity of the BPF. In addition, the parasitic H-shaped structure increases the capacitance between the two resonators, which enables a further reduction of the physical length of the filter and enhances the coupling between the resonators which improve the filter insertion loss. The proposed BPF has a center frequency of 60 GHz, an insertion loss of -2 dB, a 3dB band width of 13 GHz, and a core size 160×480 μm2 with total chip size 680×280 μm2 (including bonding pads).

[1]  Hsu Cheng-Ying,et al.  A 60-GHz Millimeter-Wave Bandpass Filter Using 0.18-$\mu\hbox{m}$ CMOS Technology , 2008, IEEE Electron Device Letters.

[2]  Yu-Chih Hsiao,et al.  Design of 60 GHz CMOS bandpass filters using complementary-conducting strip transmission lines , 2010, 2010 IEEE MTT-S International Microwave Symposium.

[3]  Yi-Ming Chen,et al.  Compact Millimeter-Wave CMOS Bandpass Filters Using Grounded Pedestal Stepped-Impedance Technique , 2010, IEEE Transactions on Microwave Theory and Techniques.

[4]  K. Aufinger,et al.  Integrated Bandpass Filter at 77 GHz in SiGe Technology , 2007, IEEE Microwave and Wireless Components Letters.

[5]  S. Das,et al.  Performance Enhancement of Microstrip Open Loop Resonator Band Pass Filter By Defected Ground structures , 2007, 2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications.

[6]  Kaixue Ma,et al.  Miniaturized 60-GHz On-Chip Multimode Quasi-Elliptical Bandpass Filter , 2013, IEEE Electron Device Letters.

[7]  Sheng-Fuh Chang,et al.  A ultra-compact 77-GHz CMOS bandpass filter using grounded pedestal stepped-impedance stubs , 2011, 2011 41st European Microwave Conference.

[8]  Keiji Yoshida,et al.  60GHz-band low loss on-chip band pass filter with patterned ground shields for millimeter wave CMOS SoC , 2011, 2011 IEEE MTT-S International Microwave Symposium.

[9]  E. Pistono,et al.  High-Performance Shielded Coplanar Waveguides for the Design of CMOS 60-GHz Bandpass Filters , 2012, IEEE Transactions on Electron Devices.

[10]  Huey-Ru Chuang,et al.  A novel ultra-compact and low-insertion-loss 77.GHz CMOS on-chip bandpass filter with adjustable transmission zeros , 2014, 2014 44th European Microwave Conference.

[11]  Cheng-Ying Hsu,et al.  70 GHz Folded Loop Dual-Mode Bandpass Filter Fabricated Using 0.18 $\mu$ m Standard CMOS Technology , 2008, IEEE Microwave and Wireless Components Letters.