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Metantenna design with one‐dimensional holographic concept
Author(s) -
Li Ziwei,
Cui Wenjie,
Liu Ruipeng,
Wang Mengjun,
Fan Chao,
Zheng Hongxing,
Li Erping
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22536
Subject(s) - beamwidth , optics , holography , microstrip , tilt (camera) , beam (structure) , antenna (radio) , radiation , physics , transverse plane , beam steering , leaky wave antenna , microstrip antenna , electrical engineering , engineering , mathematics , geometry , structural engineering
In this paper, metasurface antenna (metantenna) with one‐dimensional holographic concept is proposed and an example of producing 50° radiation beam angle at 16 GHz is taken to certify the metantenna operating principle. We first introduce one‐dimensional holographic theory to simplify the metasurface design. By this means, compared with the traditional two‐dimensional metantenna, the integral structure has fewer unit cells, simpler structure and the beam‐tilt is achieved as well. Simultaneously, to feed the metasurface above efficiently, the tapered microstrip line is modified by adding a sloping metal strip as a plane‐wave surface wave launcher, thus obtaining a smooth transition from Quasi transverse electromagnetic wave to transverse magnetic wave and a broad frequency band of impendence matching. A prototype is fabricated and tested at last. The measured radiation beam angle is 49° at 16 GHz, which approximates to the desired beforehand. On the other hand, this metantenna has a beam scanning angle of 24° to 63° from 13 to 17.5 GHz. The gain is about 13 to 15 dBi and the half power beam width is about 9° in the above frequency range. It has features of stable high gain, narrow beamwidth and high radiation efficiency.