A linearly polarized radial line slot antenna

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A typical vertical whip antenna (a monopole) possesses an omnidirectional vertically polarized pattern, and such an antenna can be comparatively small at high frequencies, such as UHF. US4899162A - Omnidirectional cylindrical antenna - Google… The antenna can be energized by a three-layer printed circuit line. It can be made up by an array of doublets folded into sheets. Radioengineering - June 2016, Volume 25, Number 2 [DOI: 10… An equivalent circuit approach is adopted in this paper to analyze a novel varactor loaded phasing line, specifically designed to improve the frequency agility features of reconfigurable aperture-coupled reflectarray cell, through the use …

A low profile slot antenna is provided which includes first and second oppositely disposed metallic plates with a dielectric layer disposed therebetween. An array of horizontal and vertical radiating elements are formed in the first …

Low‐Sidelobe Linearly-polarized Radial Line Slot Antenna Low‐Sidelobe Linearly-Polarized Radial Line Slot Antenna using a Double-Layer Dipole Array Polarizer Masahide Unno, Jiro Hirokawa, Makoto Ando Department of Electrical and Electronic Engineering, Tokyo Institute of Technology S3-19, 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan. (PDF) Dual Circularly Polarized Radial Line Slot Antenna

A STABLE DESIGN OF COAXIAL ADAPTOR FOR RADIAL LINE SLOT ANTENNA By O. Beheshti-Zavareh and M. Hakkak. Full Article PDF (759 KB) Abstract: A new design of feed for radial line slot antenna (RLSA) is presented. For better impedance match to the waveguide the effect of the various feed parameters is analyzed and their design sensitivity is studied.

A displaced feed antenna according to claim 1 and including a displaced feed parallel plate selection unit, which uses electronically or electromechanically controllable reflective surfaces, the displaced parallel plate selection unit being … US4931808A - Embedded surface wave antenna - Google Patents In designing antenna structures, it should be kept in mind that the antenna designer must make the antenna perform a desired electrical function such as transmitting/receiving linearly polarized, righthand circularly polarized, left-hand …

RADIAL LINE SLOT ANTENNAS FED BY A RECTANGULAR WAVEGUIDE THROUGH A CROSSED SLOT ... linearly tapered in phase in the ... Radial line slot antennas fed by this transformer are designed and fabricated at 5.8 GHz band and 28 GHz band. The antennas have rotational symmetry both in the near-ﬁeld

Multilayered Cavity Material Radial Line Slot Array … This paper present the design of linearly polarized radial line slot array antenna at 28 GHz for mobile broadband communication system application. The antenna consists of radiating surface with radius ρ sitting on squared cavity and ground of side 2ρ. Dual circularly polarized radial line slot antenna g .. INTRODUCTION Nowadays, the radial line slot antenna (RLSA) represents one of the most interesting planar radiating structures for its low cost, high efficiency, and mass-producible features. In the field of microwave and millimeter-wave applications, RLSA is considered an attractive candidate... AN4190 For a linearly polarized antenna, performance is often described in terms of its principal E and H plane patterns.A slot antenna's main advantages are its size, design simplicity, robustness, and convenient adaptation to mass production using PC board technology.