Title :
Miniaturized and reconfigurable 2U-shaped DGS based UWB-BPF with notched band
Author :
Mohamed, Hesham A. ; Abdallah, E.A. ; El-Shaarawy, Heba B. ; El-Hennawy, Hadia
Author_Institution :
Electron. Res. Inst. (ERI), Giza, Egypt
Abstract :
A new compact UWB BPF filter with embedded reconfigurable multiband frequency notch function is presented. The proposed filter consists of compact 2U-shaped DGS resonators shunt connected to the parallel coupled lines. Frequency notch is achieved by using 2U-DGS. To tune the notched band, suitable capacitors within the inner U-DGS and RF PIN diodes within the outer U-DGS are integrated. A curve fitting formula is derived to show the effect of the capacitor value on the center frequency of the notched band, which is decreased by 56.7%. These capacitors improved the quality factor and have the effect of reducing the filter size by 72% as compared to other filters. The RF PIN diode switch in the outer U-DGS either rises the band notch by 27% or remove the band notched according to its positions. In order to validate the feasibility of the proposed structure, UWB BPF with center frequency of 6.85GHz is designed, fabricated, and measured.
Keywords :
Q-factor; band-pass filters; curve fitting; defected ground structures; microwave filters; microwave switches; notch filters; p-i-n diodes; resonator filters; 2U-shaped DGS resonators; RF PIN diode switch; capacitor value; compact UWB BPF filter; curve fitting formula; embedded reconfigurable multiband frequency notch function; frequency 6.85 GHz; parallel coupled lines; quality factor; ultrawideband bandpass filter; Band-pass filters; Capacitors; PIN photodiodes; Radio frequency; Resonant frequency; Resonator filters; Switches;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711059