Radio frequency antenna arrays of radiating slot apertures serially connected along a predetermined path transverse to the radiating slot apertures. In the exemplary embodiments, the radiating slot apertures are formed by parallel edges of … US3995277A - Microstrip antenna - Google Patents Microstrip antenna having one or more arrays of resonant dipole radiator elements. The radiator elements have an E coordinate dimension of approximately ##EQU1## A feed line made up of similar, series-connected, semiresonant, approximately … US4042935A - Wideband multiplexing antenna feed employing… An antenna feed system having a very wide (multi-octave) bandwidth. The antenna feed comprises a plurality of nested annular cavities each parasitically excited by a pair of orthogonal two-point fed dipoles.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 54, NO ...
Abstract: A dual-fed low-profile self-diplexed slot antenna is proposed for 5.2/5.8 GHz applications. The antenna mainly comprises a half-mode substrate integrated waveguide (HMSIW)-based cavity, loaded with a slot and microstrip feedlines. US4054876A - Cavity antenna - Google Patents A cavity antenna having an aperture which may be mounted flush to the gro plane. A chamber positioned above a rectangular resonant cavity allows the antenna to achieve normal bandwidth and normal gain with a very thin cavity depth. 2818 IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL ... promising features to microstrip slot antennas: 1) slot antennas radiate unidirectionally without a back metallic cavity or re- flector and 2) themain beam of slotantennas can be kept in a de- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 54, NO ...
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 54, NO. 5, MAY 2006 1461 Size Reduction of Cavity-Backed Slot Antennas Wonbin Hong, Student Member, IEEE, Nader Behdad, Student Member, IEEE, and Kamal Sarabandi, Fellow, IEEE
A cavity-backed four-element slot antenna fed by a compact microstrip line covering the entire X-band (40% bandwidth) is proposed. Such element is envision
US6646618B2 - Low-profile slot antenna for vehicular…
IDEALS @ Illinois: Cavity-backed T-fed slot antenna Like thin microstrip patch antennas, cavity-backed slot antennas typically have a narrow impedance bandwidth of 1 to 6 percent of center frequency, which limits their usage. A new method of feeding a thin cavity slot antenna with a stripline leading to a T-bar, which lies beneath or in the slot, greatly enhances the impedance bandwidth over a CPW-fed cavity-backed slot radiator loaded with an AMC slot antenna with an AMC reflector for a practical frequency band (2.4 – 2.484 GHz) – that for WLAN base stations. Section II gives details on the design of the AMC reflector consisting of an array of rectangular patches, a substrate and an electric ground plane. The cavity-backed CPW-fed slot antenna design and the EBG performance of the A CSRR-Fed SIW Cavity-Backed Fractal Patch Antenna for In this paper, a novel compact dual-band and dual-polarized CSRR-fed SIW cavity-backed fractal patch antenna, which aims to work simultaneously for wireless energy harvesting and communication, is proposed and analyzed. It is shown that the combination of fractal geometries and the CSRR feed is effective in the design of compact SIW antennas.
Results show that microstrip fed antenna design in this thesis can yield 8.11 dB directive gain, axialIt consists of a very thin metallic sheet mounted on dielectric substrate. The antenna patch shapeIn microstrip feed, the patch is fed by a microstrip line that is located on the same plane as the patch.
The Impedance Variation with Feed Position of a Microstrip Line-Fed Patch Antenna 93 These results, obtained for the inset width of s = W0, are compared with previously published ones, and they show relatively good agreement with those Effect of the Different Shapes: Aperture Coupled Microstrip ...
A 60-GHz Wideband Slot Antenna Based on Substrate ... Abstract. This paper proposes a new wideband W-band substrate integrated waveguide (SIW) cavity-backed slot (CBS) antenna. The SIW cavity suppresses the backward radiation and ensures this antenna have a very low profile (only about 4% of the operating wavelength). Enhancing the Bandwidth of a Microstrip Patch Antenna ... Enhancing the Bandwidth of a Microstrip Patch Antenna using Slots Shaped Patch Atser A. Roy, Joseph M. Môm, Gabriel A. Igwue ... The patch is selected to be very thin such that the patch thickness t<<λo. ... Microstrip patch antennas can be fed by a variety of methods. These methods can be classified into two Slot Array Antennas at V-band based on Inverted Microstrip ...