Beamwidth Reconfigurable Magneto-Electric Dipole Antenna Based on Tunable Strip Grating Reflector | Zendy

Lei Ge | Zendy; Kwai Man Luk | Zendy

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Beamwidth Reconfigurable Magneto-Electric Dipole Antenna Based on Tunable Strip Grating Reflector

Author(s) -

Lei Ge,

Kwai Man Luk

Publication year - 2016

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2016.2615947

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

A new magneto-electric (ME) dipole antenna with a dynamic beamwidth control in the H-plane is presented. The design methodology uses tunable strip gratings placed on the sides of an ME dipole along its H-plane. Each strip is equally divided into 16 short parts and connected in series by using 15 PIN diodes; accordingly, by controlling the on/off-state of the PIN diodes, the strips can operate as a grating reflector or be transparent for the radiating wave. Therefore, the size of the reflector can be reconfigured, which leads to the tunable beamwidth. A fully functional prototype with an as wide as 40% impedance bandwidth (for SWR ≤ 1.5) is developed and tested, demonstrating the H-plane beamwidth with a tuning range from 81° to 153°. Radiation efficiencies are better than 90% in all the states of operation.

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