US3255454A - Surface wave luneberg lens antenna system - Google… 2. A Luneberg lens antenna system comprising a surface-wave structure, a radially symmetrical dielectric lens having a rim positioned on and integrally formed with said structure, the contour configuration of said lens conforming to that of … US6590545B2 - Electrically small planar UWB antenna apparatus… An electrically small, planar ultra wide bandwidth (UWB) antenna is disclosed. The antenna has a conductive outer ground area that encompasses a tapered non-conducting clearance area, which surrounds a conductive inner driven area.
The antenna structure is consist of a square radiation patch with an E-shaped slot, a modified ground plane with an inverted T-shaped strip that act as a parasitic stub and two parallel slots and a protruded strip which is connected to the …
Beam shaping is a challenging assignment for radial line slot antennas (RLSAs) which operate on oversized parallel plate waveguides. A RLSA for an elliptical beam with an elliptical aperture is designed and measured at 22GHz. Radiuses of the major and minor axes are 300mm and 150mm for an ellipticity of 2:1. Radial Line Slot Antennas | SpringerLink A radial line slot antenna (RLSA) is a circularly polarized high efficiency planar array. Two types of RLSAs, a single-layered and a double-layered one, were released commercially for 12 GHz band direct broadcast satellite (DBS) reception. RADIAL LINE SLOT ANTENNAS FED BY A ... - 東京農工大学 RADIAL LINE SLOT ANTENNAS FED BY A RECTANGULAR WAVEGUIDE THROUGH A CROSSED SLOT Kaoru SUDO∗, Takuichi HIRANO, Jiro HIROKAWA, and Makoto ANDO Department of Electrical and Electronic Engineering, Tokyo Institute of Technology 2-12-1, O-okayama, Meguro-ku, Tokyo, 152-8552, Japan E-mail: ksudo@antenna.ee.titech.ac.jp 1 Introduction A Reconfigurable Radial Line Slot Array (RLSA) Antenna for ...
Low-cost monopulse radial line slot antenna - IEEE…
A wide beam radio frequency (RF) antenna includes a waveguide and one or more electrically conductive protrusions. The waveguide has at least one electrically conductive interior wall surface, a boresight defined by a longitudinal axis, and an aperture plane, transverse to the longitudinal axis, disposed at a distal end of the waveguide.
Radial Line Slot Antennas
A radial line slot antenna (RLSA) with a quasi-elliptical aperture to create an elliptical beam is discussed in this paper. A simple feeding structure consisting of a coaxial feeder and two ... A Radial Line Slot Antenna for An Elliptical Beam A Radial Line Slot Antenna for An Elliptical Beam! ABSTRACT: Antenna ia backbone of communication system with the advent of technology a lot of innovation happens to develop the antenna. Radial Microstrip Slotline Feed Network for Circular Mobile ...
WIDE BEAM TAPERED SLOT ANTENNA FOR WIDE ANGLE SCANNING PHASED ARRAY ANTENNA A. Kedar and K. S. Beenamole Electronics & Radar Development Establishment (LRDE) C V Raman Nagar, Bangalore 560093, India Abstract|Design and development of a low proflle, compact, wide beam and wide band printed double layered exponentially tapered slot
A reconfigurable beam shape and broadside radiation pattern microstrip antenna is introduced in this paper. The antenna's radiating surface is designed using a radial line slot array (RLSA) arrangement, which is fed from an aperture coupled structure. DIAGNOSIS TECHNIQUES FOR PLANAR ANTENNAS USING ITERATIVE ... 3. Results for Radial Line Slot Antennas The source reconstruction technique has been applied to the simulated and the measured data of a K-band radial line slot antenna (RLSA) shown in Fig. 3 and the designed magnetic current at each slot. The RLSA consists of 1062 slots, and operates at 19.9 GHz.
Design Narrow Slot Antenna for Dual Frequency | Request PDF This paper aims to design a radial line slot antenna (RLSA) with rotational asymmetry for realizing an elliptical beam. The characteristics of quasi-elliptical aperture RLSA are predicted by Design of mm-Wave RLSAs with Lossy Waveguides by Slot This paper discusses how to design a Radial Line Slot Antenna (RLSA) whose waveguide is filled with high loss dielectric materials. We introduce a new design for the aperture slot coupling synthesis to restrain the dielectric losses and improve the antenna gain. Based on a newly defined slot coupling, a number of RLSAs with different sizes and loss factors are analyzed and their performances