An MEMS Phase Shifter With High Power Handling for Electronic Beam Tilt in Base Station Antennas

Ibrahim, Sarah Adel; Wang, Ziming; Farrell, Alison

doi:10.1109/lmwc.2017.2664583

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…Gradating the strip widths of square loops contribute for a tilted beam formation with high gain. Furthermore, beam tilting can be achieved by reconfigurable components such as PIN diodes [5], and micro-electromechanical systems devices [6] along with the antenna elements. Even though, the mechanically controlled technique delivers a high performance in beam tilting [7], the installation leads to complexity in the design, to overcome these issues, electromagnetic band gap (EBG) [8] structures have installed with the primary antenna element.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band beam tilting antenna with low profile negative refractive index metamaterial

Ayyadurai

Muthu

2019

IET Microwaves, Antennas & Propagation

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A dual band negative refractive index metamaterial (NRIM) loaded beam tilting antenna has been proposed for 5G applications. The proposed antenna comprises of a dual band quarter wave bow–tie dipole with NRIM array fixed above the ground plane. The dual band NRIM unit cell is derived from the conventional double negative meta‐material structure. When NRIM arrays have been integrated with dipole antenna at optimum distance and height, the main beam is deflected by 34.5° and 45° with peak gain of 8.1 and 8.93 dB at 2 and 3.5 GHz, respectively. Unlike the conventional beam tilting antennas, no gain reduction observed for both the bands when the beam is tilted, instead gain has been improved about 0.53 and 1.02 dB at lower and higher bands, respectively. Furthermore, the application of the proposed NRIM dipole in array antennas has been studied and discussed.

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