Wideband L-Probe Fed Inverted Hybrid E-H Microstrip Patch Antennas for IMT-2000 Band

TIris paper presents a novel wideband L-probe fed inverted hybrid E-H shaped microstrip patch antenna (LIEH) covering the International Mobile Telecommunications - 2000 (IMT-2000) band. The design adopts contemporary techniques; Lprobe feeding, inverted patch structure with air-filled dielectric, and slotted patch. The composite effect of integrating these techniques and introducing the novel E-H patch shaped offers a low profile, broadband, high gain, low crosspolarization, and compact antenna element. Measurement result showed satisfactory performance with an achievable bandwidth of 17.20% at 14 dB return loss (SWR = 1.5), maximum achievable gain of 8 dBi with 1 dB gain variations, and crosspolarization level of 23 dB below the main lobe level. The LIEH patch has a compact dimension of 79 x 41 mm2 . The design is suitable for array applications especially for IMT-2000 base station antenna.