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- Title
A Novel Millimeter-Wave Backward to Forward Scanning Periodic Leaky-Wave Antenna Based on Two Different Radiator Types.
- Authors
Yiming Zhang; Hui Liu; Chenyang Meng; Yuxin Lin; Yuan Zhang; Forsberg, Erik; Sailing He
- Abstract
A periodic millimeter wave leaky-wave antenna (LWA), which has two different types of radiator elements that enable backward to forward radiation, is proposed. The unit-cell of the LWA consists of two quarter-wavelength microstrip lines and two corrugated substrate integrated waveguide (CSIW) cells with S-shaped quarter-wavelength open-circuit stubs. In addition to two parallel edge radiators, a single etched transverse slot with a tilt angle acts as an ancillary radiator, which ensures impedance matching in a large frequency range and achieves the backward to forward scanning. We analyze the proposed design through simulations, characterize a fabricated prototype, and find it to have good radiation properties including broad impedance bandwidth. The measurement results show a high peak gain from 11 to 15.8 dBi with a large scanning angle range from â?'34â--? to +22â--? in the K-band operating frequency range.
- Subjects
LEAKY-wave antennas; RADIATORS; MILLIMETER wave antennas; MICROSTRIP transmission lines; SUBSTRATE integrated waveguides; IMPEDANCE matching
- Publication
Progress in Electromagnetics Research, 2020, Vol 168, p31
- ISSN
1070-4698
- Publication type
Article
- DOI
10.2528/pier20072202