An Introduction of Aperture Coupled Microstrip Slot … An aperture-coupled design is proposed for Microstrip slot antenna to improve its radiation pattern as well as bandwidth. It is based on coupling of an aperture between the patch antenna and Microstrip slot line. The first aperture coupled microstrip antenna was introduced in 1985 by D M Pozar (4) Figure1: Aperture coupled microstrip slot antenna DESIGN OF RECONFIGURABLE ANNULAR SLOT ANTENNA (ASA) FOR ... The annular slot antenna consists of a circular slot on a square, metal ground plane that is fed by a microstrip line, designed on the bottom of the Duroid substrate. The mean length of the slot circumference is approximately 3 λs/2 at the frequency of 5.8 GHz Wideband double-element ring slot antenna - Electronics Letters
A broadband microstrip antenna including two overlapping PC boards. A plurality of concentric spaced apart radiating rings and an upper ground plane layer are etched in the conductive upper surface of the upper PC board.
US4035807A - Integrated microwave phase shifter and radiator… A substantially two-dimensional integrated phase shifter and radiator module wherein a plurality of phase shifting elements are deposited in microstrip configuration on one side of a common substrate, and at least one radiating element is … US6252553B1 - Multi-mode patch antenna system and method of… A hand-held antenna specifically for GPS applications is provided which includes a microstrip patch antenna having a ground board, a single radiating patch spaced from the ground board and a resonant cavity defined between the ground board … US4737793A - Radio frequency antenna with controllably variable…
Microstrip Line-Fed Patch Antenna For UWB Applications
A compact rhombus-shaped slot antenna fed by microstrip-line ... In this paper, a novel design and experimental study of microstrip-line-fed rhombus-shaped slot antenna is presented. The proposed antenna shows an ultra-wide band (UWB) operation with good impedance matching by choosing appropriate rhombus-shaped slot and feeding structure. Circular Patch loaded Annular Ring Microstrip Antenna using L ...
A new microstrip-fed cavity-backed annular slot antenna
Wideband double-element ring slot antenna N. Behdad and K. Sarabandi A new technique for bandwidth enhancement of microstrip-fed annular ring slot antennas is presented. US3665480A - Annular slot antenna with stripline feed ... US3665480D 1969-01-23 1969-01-23 Annular slot antenna with stripline feed ... Microstrip tee-fed slot antenna ... planar antenna with annular feed slot, ... Microstrip-fed dual-frequency annular-slot antenna loaded ... A compact dual-band annular-slot antenna loaded by a concentric split-ring-slot is presented. A stepped microstrip feedline enables the control of the coup
This technique has also been applied to tune the frequency of an annular slot ... slot antenna, and microstrip ... this microstrip-fed planar horn antenna ...
Slot Antenna - an overview | ScienceDirect Topics The slot antenna, consisting of a narrow slit in a ground plane, is a very versatile antenna. With modification, it is amenable to waveguide, coplanar waveguide (CPW), coaxial, slot line, or microstrip feeding schemes and has been used in all aspects of wireless and radar applications. Annular Slot Antenna Theory - stylinliving.com
annular slot antenna keeping constant the operation frequency. II. DESIGN CONCEPT The annular slot antenna consists of a circular slot on a square, metal ground plane that is fed by a microstrip line, fabricated on the bottom of the Duroid substrate as can be seen in Figs 1a and 1b. Big Diode Fig. 1a ASA front side Ls1 L1 D1 D3D2 L2 Ls2 Axial-Ratio-Bandwidth Enhancement of a Microstrip-Line-Fed ... Abstract: The design of a new microstrip-line-fed wideband circularly polarized (CP) annular-ring slot antenna (ARSA) is proposed. Compared with existing ring slot antennas, the ARSAs designed here possess much larger CP bandwidths.