A Compact Multiple Band-Notched Planer Antenna with Enhanced Bandwidth Using Parasitic Strip Lumped Capacitors and DGS-Technique

A new approach to design compact tunable BPF starting from simple LPF topology using a single T‐DGS‐resonator and ceramic capacitors

“…Various types of microstrip line crossovers have been reported to replace air-bridge crossovers, which mainly includes the following types: double rings [3], ring-patch [4], two-section branch-line couplers [5], microstrip line to CPW transitions [6], conductor-backed CPW [7], microstip to slot line transitions [8]. The double rings crossover in [3] achieves a bandwidth of 20% and an isolation of 20 dB. The ring-patch crossover in [4] is an improvement of [3], which achieves a bandwidth of 44% and an isolation of 18 dB.…”

“…The double rings crossover in [3] achieves a bandwidth of 20% and an isolation of 20 dB. The ring-patch crossover in [4] is an improvement of [3], which achieves a bandwidth of 44% and an isolation of 18 dB. Structure in [5] is a dual-band crossover, whereas the bandwidth is narrow.…”

Design and Fabrication of a Novel Quadruple-Band Monopole Antenna Using a U-DGS and Open-Loop-Ring Resonators

“…In [4,5], the antenna produced four bands at 4.64, 5.04, 5.62 and 6.22 GHz. In addition, the antenna in [6][7][8][9][10][11][12][13][14][15][16][17][18] can generate four bands at 2.8, 4, 5.4 and 6.2 GHz to cover WLAN/WiMAX. However, none of these antennas can satisfy the C and X bands for mobile and satellite applications.…”

A Compact Dual-Band CPW-Fed Planar Monopole Antenna for 2.62–2.73 GHz Frequency Band, WiMAX and WLAN Applications

“…In [13], a square-slot antenna with symmetrical L-strips is presented for WLAN and WiMAX applications, but the three resonant frequencies cannot be tuned independently. Many promising UWB antennas have been discussed in the literature [14][15][16][17][18].…”