A compact realization of composite low‐pass filter for monolithic microwave integrated circuit applications

A compact realization of composite low-pass filter is presented in this article. The filter is realized using on-chip spiral inductors and metal–insulator–metal capacitors and features an attenuation pole near the cutoff frequency leading to a sharper attenuation response. As well, it offers good matching properties in the passband. Space-mapping-based algorithm is used in the design/optimization of spiral inductors toward achieving high quality factors at the filter cutoff frequency. The realization of the proposed filter is compact in size, suitable for monolithic microwave integrated circuit applications, and exhibit broad upper stopband frequency characteristics. © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2012. © 2012 Wiley Periodicals, Inc.

[1]  Jr. R. Wyndrum.  Microwave filters, impedance-matching networks, and coupling structures , 1965 .

[2]  R. B. Greed,et al.  On the development of superconducting microstrip filters for mobile communications applications , 1999 .

[3]  John R. Carson,et al.  Transient oscillations in electric wave-filters , 1923 .

[4]  E. M. Jones,et al.  Microwave Filters, Impedance-Matching Networks, and Coupling Structures , 1980 .

[5]  Otto J. Zobel,et al.  Theory and design of uniform and composite electric wave-filters , 1923 .

[6]  I. Bahl.  Lumped Elements for RF and Microwave Circuits , 2003 .

[7]  V. Devabhaktuni,et al.  A New SQP Based Space-Mapping Algorithm for On-Chip Spiral Inductor Optimization , 2007, 2007 Canadian Conference on Electrical and Computer Engineering.

[8]  Sener Uysal,et al.  A compact coplanar stripline lowpass filter , 1999, 1999 Asia Pacific Microwave Conference. APMC'99. Microwaves Enter the 21st Century. Conference Proceedings (Cat. No.99TH8473).

[9]  T.H. Lee,et al.  A physical model for planar spiral inductors on silicon , 1996, International Electron Devices Meeting. Technical Digest.

[10]  J. Laskar,et al.  Compact planar and vialess composite low-pass filters using folded stepped-impedance resonator on liquid-Crystal-polymer substrate , 2005, IEEE Transactions on Microwave Theory and Techniques.

[11]  H. Abdalla,et al.  Design of low-pass microstrip filters with equal-ripple passband and finite attenuation poles , 2001, Proceedings of the 2001 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference. (Cat. No.01TH8568).