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A Simple WiMAX and RFID band Notched UWB Bandpass Filter and It's susceptibility Study
摘要： An ultra-wideband (UWB) bandpass filter (BPF) with a fractional bandwidth (FBW) of about 110%, transmission zero at the high frequency edge, and band notches at the worldwide interoperability for microwave access (WiMAX) and radio frequency identification (RFID) band is presented in this paper. The filter is based on single short-circuited stub, U-shaped defected ground structure (DGS) array, two U-shaped resonators and two stepped impedance resonators (SIRs). The filter is compact and exhibits a selective filtering characteristic equivalent to a 3-pole Chebyshev filter. The design procedure has been described and verified by full-wave electromagnetic (EM) simulation and measurement. The proposed filter has low insertion loss, sharp rejection, and excellent in and out band performance. Due to its applications in WiMAX and RFID systems, the filter may be subjected to high EM radiation from the antenna and nearby sources. Therefore, susceptibility study of such filter is very important. Hence, the susceptibility study of the band notched UWB bandpass filter has been carried out by subjecting the structure to an interference source.
关键词： Microstrip band pass filters (BPFs),notch band,transmission zero,ultra-wideband (UWB) filters
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting - Atlanta, GA, USA (2019.7.7-2019.7.12)] 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting - A Substrate Integrated Waveguide Filtering Slot Antenna Array
摘要： A fully integrated 1×4 filtering linear antenna array is presented in this work. The filtering array is designed in substrate integrated waveguide technology and consists of 5 coupled cavities with a 6th-order filtering function. The antenna array is formed with a linear arrangement of four slot antennas in the final cavities which excite two modes in the radiating cavity. The array operates at a center frequency of 6.75 GHz with a fractional bandwidth of 5.0% and with a gain of 7.44 dBi.
关键词： slot antennas,cavity resonators,linear antenna arrays,band pass filters
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE/MTT-S International Microwave Symposium - IMS 2019 - Boston, MA, USA (2019.6.2-2019.6.7)] 2019 IEEE MTT-S International Microwave Symposium (IMS) - Highly Configurable Cylindrical-Resonator-Based Bandpass Filter Built of Silica-Based Post-Wall Waveguide and Its Application to Compact E-Band Hybrid-Coupled Diplexer
摘要： This paper presents a compact and low-profile bandpass filter (BPF) built of silica-based post-wall waveguide. The BPF adopts direct-coupled resonator filters based on cylindrical resonators. The filter is highly configurable in shape and allows flexible and compact design. A compact E-band hybrid-coupled diplexer is presented as an application. The dimensions of the BPF and diplexer are 4.0×4.0 mm2 and 9.4×9.9 mm2, respectively. The insertion loss of the lower passband of the diplexer is 1.52 dB at 72.9 GHz and that of the higher passband is 2.0 dB at 82.8 GHz
关键词： millimeter wave devices,short-slot coupler,Substrate integrated waveguide (SIW),band-pass filters,diplexer
更新于2025-09-16 10:30:52