TANGENTIALLY FED BROADBAND ANNULAR SLOT ANTENNA FOR WLAN APPLICATIONS Philippe Minard, Ali Louzir THOMSON multimedia, Corporate Research 1 Avenue Belle-Fontaine, BP ... Dual-frequency Dual-sense Circularly-polarized Slot ... Dual-frequency Dual-sense Circularly-polarized ... Dual-frequency dual-sense circularly-polarized slot antenna fed by ... a microstrip feedline to the annular-slot. Microstrip-Fed Dual-Frequency Annular-Slot Microstrip-fed dual-frequency annular-slot antenna loaded by split-ring- slot.Abstract: 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 coupling and provides good matching. A new microstrip-fed cavity-backed annular slot antenna
Microstrip Antennas: Feeding Methods
Polarization Reconfigurable Eccentric Annular Ring Slot Jun 10, 2015 · Abstract: A microstrip-fed reconfigurable eccentric annular ring slot (EARS) antenna with switchable polarization is proposed. To generate orthogonal circular polarization (CP) radiations, two identical perturbation slots (PSs) are loaded below the eccentric ring-shaped slot. Bandwidth enhancement of L-probe proximity-fed annular Bandwidth Enhancement of L-Probe Proximity-Fed Annular Ring Microstrip Slot Antenna A. K. Singh, (Research Scholar) Ravi Kumar Gangwar Binod K. Kanaujia Electronics Engineering, Electronics Engineering, Electronics and Commn. Microstrip‐line‐fed printed shorted ring‐slot antennas for Aug 27, 2001 · Circular polarization (CP) radiation of the shorted ring‐slot antennas is achieved by selecting a proper length of the shorted section in the ring slot, which is about 3.9 and 8% of the mean circumference of annular and square ring slots, respectively, and feeding the ring slot using a microstrip line 90° to the shorted section.
A microstrip annular antenna structure is formed by four quarter-wavelength microstrip radiator patches arranged in a quadrant formation and having outwardly directed adjacent radiating apertures which together provide a composite annular radiating slot extending about 360° of azimuth. All such radiators are fed in-phase by a single centrally located feedpoint and equal length microstrip ...
Aug 27, 2001 · Circular polarization (CP) radiation of the shorted ring‐slot antennas is achieved by selecting a proper length of the shorted section in the ring slot, which is about 3.9 and 8% of the mean circumference of annular and square ring slots, respectively, and feeding the ring slot using a microstrip line 90° to the shorted section. Bandwidth enhancement of L-probe proximity-fed annular Bandwidth Enhancement of L-Probe Proximity-Fed Annular Ring Microstrip Slot Antenna A. K. Singh, (Research Scholar) Ravi Kumar Gangwar Binod K. Kanaujia Electronics Engineering, Electronics Engineering, Electronics and Commn. Gain enhancement of annular slot antennas | Request PDF Gain enhancement of annular slot antennas. A cross-shaped microstrip-fed ring slot antenna with large bandwidth is presented experimentally in this paper. The characteristics of the antenna ... Chapter 5 Impedance of Slot Antennas 5.1 Introduction present calculations for a slot fed by a microstrip line with a bolometer detector centered between the two slots. The feed line is electromagnetically coupled to the slot antennas so no direct connections to the ground plane are necessary which simplifies the fabrication of the feed network and antennas. We present calculations
US3665480A - Annular slot antenna with stripline feed ...
A Microstrip-Line-Fed Suspended Square Slot Microstrip Antenna… A microstrip line-fed suspended square slot antenna with parasitic patch is presented. The proposed antenna is excited by a microstrip line feed placed at the bottom side of the substrate. A Microstrip-Line-Fed Suspended Square Slot Microstrip Antenna… For example, in [2], a printed wide-slot antenna fed by a microstrip line with a fork-like tuning stub has The main advantage of circular polarization is its greater been used to obtain broad bandwidth through the proper flexibility in … Effect of Substrate Thickness on Resonance Characteristics of… The radiating elements of the proposed antenna are composed of a interconnected Double ring slot.
A Functional Microstrip Circuit Module for Annular Slot …
Shorted Annular Slot Antenna - CiteSeerX Shorted Annular Slot Antenna (ASA) Matched at Three Different. Frequencies. Symeon ... The antenna is fed by a 50 Ω microstrip line with width of 0.92 mm and ... (PDF) Design and development of an annular slot antenna (ASA) with ... Dec 9, 2018 ... microstrip feeding line with the matching network is fabricated. on the back ... annular slot antenna keeping constant the operation frequency. II.
US5714961A - Planar antenna directional in azimuth and/or… A directional planar antenna is disclosed. The antenna has an array of coaxial ring-slot radiating elements formed through a conductive layer on a dielectric substrate. A number of probes, coupled to the ring-slot elements, selectively … US4864314A - Dual band antennas with microstrip array mounted…