UWB BPF with triple notched bands using novel dual-mode SIR and asymmetrical coupling structure

A novel ultra-wideband (UWB) bandpass filter (BPF) with triple notched bands is presented in this paper. The basic UWB BPF is realized by a Y-shaped multi-mode resonator. In order to reject the interfered signals, a novel dual-mode stepped impedance resonator is embedded to introduce dual notched bands at 5.85/8.13 GHz. Due to the asymmetrical coupling structure, another notched band centered at 7.12 GHz is implemented as well. Analysis of the filter has been done with classical even- and odd-mode methods. For verification, two sample filters have been simulated, fabricated, and measured. Good agreement is found between the simulations and measurements. The implementation area of the proposed filter is 14.7 × 10.1 mm2.

[1]  Chen Miao,et al.  Compact and Sharp Rejection Microstrip UWB BPF with Dual Narrow Notched Bands , 2011 .

[2]  Qing-Xin Chu,et al.  COMPACT UWB FILTER BASED ON SURFACE-COUPLED STRUCTURE WITH DUAL NOTCHED BANDS , 2010 .

[3]  S Pirani,et al.  Band-Notched UWB BPF Design Using Parasitic Coupled Line , 2010, IEEE Microwave and Wireless Components Letters.

[4]  M. Tayarani,et al.  A New Microstrip UWB Bandpass Filter Using Defected Microstrip Structures , 2010 .

[5]  Jia-Sheng Hong,et al.  Compact Ultra-Wideband Microstrip/Coplanar Waveguide Bandpass Filter , 2007, IEEE Microwave and Wireless Components Letters.

[6]  R. Pucel,et al.  Modeling via hole grounds in microstrip , 1991, IEEE Microwave and Guided Wave Letters.

[7]  Ching-Her Lee,et al.  MMR-based Band-notched UWB Bandpass Filter Design , 2008 .

[8]  R Ghatak,et al.  A Compact UWB Bandpass Filter With Embedded SIR as Band Notch Structure , 2011, IEEE Microwave and Wireless Components Letters.

[9]  W. Menzel,et al.  Ultra-wideband (UWB) bandpass filters using multiple-mode resonator , 2005, IEEE Microwave and Wireless Components Letters.

[10]  Hadi Bahrami,et al.  Analysis and Design of Highly Compact Bandpass Waveguide Filter Using Complementary Split Ring Resonators(CSRR) , 2008 .

[11]  L. Kempel,et al.  COMPARISON OF UWB SHORT-PULSE AND STEPPED-FREQUENCY RADAR SYSTEMS FOR IMAGING THROUGH BARRIERS , 2010 .

[12]  Guomin Yang,et al.  An UWB Bandpass Filter Based on Single Ring Resonator and Shorted Stubs Loaded Without Coupled Feed Lines , 2011 .

[13]  X. R. Zhang,et al.  UWB Waveguide Bandpass Filter With A Narrow Notched Band , 2012 .

[14]  Quan Xue,et al.  Inductance-Loaded Y-Shaped Resonators and Their Applications to Filters , 2010, IEEE Transactions on Microwave Theory and Techniques.

[16]  David Girbau,et al.  ANALYSIS OF VITAL SIGNS MONITORING USING AN IR-UWB RADAR , 2010 .