?url_ver=Z39.88-2004&rft_id=10.1109%2FAPACE.2012.6457660&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Khalid%2C+S.&rft.aulast=Khalid&rft.aufirst=S.&rft.date=2012&rft.title=A+novel+design+technique+for+ultra-wideband+(UWB)+bandpass+filter+using+step+impedance+resonators+(SIR)&rft.isbn=9781467331166&rft.genre=proceeding