Pattern and Frequency Reconfigurable Annular Slot Antenna ... Annular slot antenna schematic The feeding line with the matching Fig. 2. Simulated normalized radiation patterns on the x-y plane with a short stubs are on the bottom and the annular slot antenna is on the top side of the circuit at 225 . The null direction for the slot without any short would be in the substrate. A BROADBAND VHF-L BAND CAVITY-BACKED SLOT SPIRAL ANTENNA a broadband vhf-l band cavity-backed slot spiral antenna 6. author(s) john l. volakis 5. funding numbers c - f30602-98-c-0233 pe - 63617f pr - 2317 ta - 08 wu - 04 7. performing organization name(s) and address(es) university of michigan ann arbor michigan 8. performing organization report number n/a 9. Ultra-Wide-Band Microstrip Concentric Annular Ring Antenna ... 2. Antenna design Annular ring slot antenna has a reduce sizemore than circular patch antenna and the ultra-wideband characteristic [6]. In this paper, to broaden the bandwidth of annular ring slot antenna, we placed the concentric annular patch inside circular slot and designed the low impedance feed line.
1991-2-19 · An inexpensive, efficient, broadband, slot-type antenna with unidirectional sensitivity includes a slot-forming means defining a plurality of substantially concentric and generally coplanar annular slots and a non-resonant antenna connection means for transmitting electromagnetic energy to and from the plurality of annular slots.
Polarization Reconfigurable Eccentric Annular Ring Slot Antenna Design 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. TANGENTIALLY FED BROADBAND ANNULAR SLOT ANTENNA FOR WLAN ... TANGENTIALLY FED BROADBAND ANNULAR SLOT ANTENNA FOR WLAN APPLICATIONS Philippe Minard, Ali Louzir THOMSON multimedia, Corporate Research 1 Avenue Belle-Fontaine, BP 19, 35511 Cesson-Sévigné Cedex – France Pattern and Frequency Reconfigurable Annular Slot Antenna ... Annular slot antenna schematic The feeding line with the matching Fig. 2. Simulated normalized radiation patterns on the x-y plane with a short stubs are on the bottom and the annular slot antenna is on the top side of the circuit at 225 . The null direction for the slot without any short would be in the substrate. Microstrip‐line‐fed printed shorted ring‐slot antennas for ... 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 Novel Concentric Annular-Ring Slot Dual-Band Circularly Polarized ...
Abstract: A wideband circularly polarized (CP) annular-ring patch antenna with two proximity-coupled L-probe feeds orientated to have phases of 0 deg and 90 deg, using a broadband 90 deg hybrid feed, is proposed. It is found that the current distribution for Broadband Annular Ring Microstrip Antennas | Products ... M. Park, "A broadband eccentric annular ring microstrip slot antenna :' Joumol of the Korea Elecfmmagnetic EngineeringSo&*, vol. Asia-pacific abstracts 66) A Broadband Eccentric Annular Ring Microstrip Slot Antenna , by Young Hoon Suh, Ikmo Park Antennas - Tech Comm, Inc.
US Patent for Antenna Patent (Patent # D 664,126 issued ...
A simple structure concentric annular-ring slot dual-band circularly polarized (CP) microstrip antenna operating at ISM band (2.45 GHz) and 5G band (3.5 GHz) is proposed in this paper. The antenna achieves dual-band operation by digging two concentric annular-ring slots on the ground. And on the angular positions with 45 degrees inclined of each annular slot, two bent structures are loaded to ... A Broadband Multi-layer Dual-polarization Slot Antenna ...
Broadband Circularly Polarized Annular-Ring Microstrip ...
2016-12-17 · Annular ring slot antenna has a reduce sizemore than circular patch antenna and the ultra-wideband characteristic [6]. In this paper, to broaden the bandwidth of annular ring slot antenna, we placed the concentric annular patch inside circular slot and designed the low impedance feed line. Because, for an annular ring slot antenna, the resonant Cavity-Backed Slot Antennas - Antenna Theory A practical slot antenna is the cavity-backed slot antenna. Unfortunately, the equations related to the cavity backed slot antenna are somewhat complicated and in my opinion don't give a good idea of how they work. Hence, I'll present the basics, present some experimental results and try to give an idea of design parameters. A Compact Annular Ring Microstrip Antenna for WSN A compact annular ring microstrip antenna was proposed for a wireless sensor network (WSN) application in the 2.4 GHz band. In this paper the major considerations of the conformal antenna design were the compact size and the impact on antenna’s performance of a steel installation base. Slot Antenna
Annular slot antenna schematic The feeding line with the matching Fig. 2. Simulated normalized radiation patterns on the x-y plane with a short stubs are on the bottom and the annular slot antenna is on the top side of the circuit at 225 . The null direction for the slot without any short would be in the substrate.