Novel Notched UWB Filter Using Stepped Impedance Stub Loaded Microstrip Resonator and Spurlines

This paper presents a novel ultrawideband (UWB) bandpass filter using stepped impedance stub loaded microstrip resonator (SISLMR). The proposed resonator is so formed to allow its four resonant frequencies in the UWB passband, which extends from 3.1 GHz to 10.6 GHz. Moreover, two spurline sections are employed to create a sharp notched-band filter for suppressing the signals of 5 GHz WLAN devices. Experimental results of the fabricated filters are in good agreement with the HFSS simulations and validate the design.

[1]  Fu-Chieh Hsu,et al.  Microstrip bandpass filters for Ultra-Wideband (UWB) wireless communications , 2005, IEEE MTT-S International Microwave Symposium Digest, 2005..

[2]  Rakhesh S. Kshetrimayum,et al.  Notched UWB bandpass filter using complementary single split ring resonator , 2010, IEICE Electron. Express.

[3]  Xiaowei Zhu,et al.  Design and implement of compact UWB bandpass filter with a frequency notch by consisting of coupled Microstrip line structure, DGS and EOS , 2009, 2009 International Conference on Advanced Technologies for Communications.

[4]  Lei Zhu,et al.  Compact UWB Bandpass Filter Using Stub-Loaded Multiple-Mode Resonator , 2007, IEEE Microwave and Wireless Components Letters.

[5]  Qunsheng Cao,et al.  Compact UWB Bandpass Filter With Improved Upper-Stopband Performance , 2009, IEEE Microwave and Wireless Components Letters.

[6]  Lei Zhu,et al.  Ultra-wideband bandpass filter on aperture-backed microstrip line , 2005 .

[7]  T. Anada,et al.  A Novel Compact Ultra-Wideband Bandpass Filter Using a Microstrip Stepped-Impedance Four-Modes Resonator , 2007, 2007 IEEE/MTT-S International Microwave Symposium.

[8]  R. N. Bates.  Design of microstrip spur-line band-stop filters , 1977 .

[9]  Jia-Sheng Hong,et al.  Ultra-Wideband (UWB) Bandpass Filter With Embedded Band Notch Structures , 2007, IEEE Microwave and Wireless Components Letters.

[10]  R M Morey,et al.  Response to FCC 98-208 notice of inquiry in the matter of revision of part 15 of the commission's rules regarding ultra-wideband transmission systems , 1998 .

[11]  Zhewang Ma,et al.  A compact UWB bandpass filter using two-section open-circuited stubs to realize transmission zeros , 2005, 2005 Asia-Pacific Microwave Conference Proceedings.

[12]  W. Menzel,et al.  Ultra-wideband bandpass filter with hybrid microstrip/CPW structure , 2005, IEEE Microwave and Wireless Components Letters.

[13]  C. Vittoria,et al.  Small Ultra-Wideband (UWB) Bandpass Filter With Notched Band , 2008, IEEE Microwave and Wireless Components Letters.

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