Inspec keywords: UHF antennas; band-pass filters; antenna feeds; tuning; microstrip lines; antenna radiation patterns; microstrip antennas

Other keywords: microstrip line feed; frequency 2.45 GHz; band edge gain selectivity; tuning stub transition structure; hybrid radiator; tuning stub transition structures; filter geometry; step impedance resonators; two-step impedance resonators; four-band bandpass filter; square-ring; filtering antenna; SIR; T-stub; GSM1800-WLAN-WiMAX applications; frequency 5.2 GHz; frequency 3.5 GHz; compact four-band hybrid filtering antenna; frequency 1.8 GHz

Subjects: Single antennas; Waveguides and microwave transmission lines; Antenna accessories