L-BAND ANNULAR SLOT ANTENNAS. M.E.C.’s c390-152 L-band annular slot, flush-mount antennas feature an omni-directional azimuth pattern and high peak power handling capability. Its radiation pattern and gain are similar to a matched quarterwave monopole. This antenna meets MIL-A-25707 and is designed to IFF and/or TACAN applications. 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. TANGENTIALLY FED BROADBAND ANNULAR SLOT ANTENNA FOR WLAN ...
Patch Loading Circular Aperture Slot Antennas for ...
A broadband circularly polarized antenna of square-ring ... Examples of RFID-reader antennas include the patch antenna fed by a Wilkinson power divider and the annular-ring slot antenna with a slot-line feed . However, these antennas are too large, and some single-feed single-element patch antennas usually have a narrow circular-polarized (CP) bandwidth , , , . A Novel Concentric Annular-Ring Slot Dual-Band Circularly ... 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 ... Eccentric Annular Slot Antenna for Breast Cancer Detection ... the wideband eccentric annular slot antenna to analyze and investigate the characteristics of malignant breast tumors. A FDTD based model is implemented to include the normal breast tissue, breast skin, malignant tumor and the transmitting/receiving antenna [1, 3-8]. The geometry of the antenna is shown in Fig. 1. This investigation will help in
Broadband Circularly Polarized Annular-Ring Microstrip ...
LIST OF PUBLICATIONS - Nanyang Technological University 2013-3-4 · C. Chua and Z. Shen, “A planar broadband circularly polarized antenna combining printed dipole and mcirostrip-fed slot,” Proc. Of IEEE AP-S International Symposium, San Diego, July 2008. 36. M. Wang and Z. Shen, “Nulling of antenna arrays including the mutual coupling effect,” IEEE VTC Spring Conference, pp.247-251, May 2008. 37. Annular Slot Antenna - How is Annular Slot Antenna In [12], dual-band circularly polarized annular slot antenna is obtained by employing two square slots, a bended microstrip line and a cavity back. As shown in Figure 2(a), antenna 1 is a fold annular slot antenna , and the asymmetric of the slot width will lead to two split orthogonal degenerate modes around 2. Broadband circularly polarized annular ring slot antenna A broadband circularly polarized annular ring slot antenna is disclosed, which includes a substrate, an annular ring slot antenna portion located on the upper surface of the substrate, and a microstrip feeding portion located on the lower surface of the substrate. The annular ring slot antenna portion includes a grounding unit, an annular ring slot unit, a central metal unit, a first Broadband circularly polarized Annular -Ring …
A Novel Concentric Annular-Ring Slot Dual-Band Circularly ...
Introduction. The patch antenna could be installed only in a thin annular slot on the top of the installation base whose inner radius was greater than 5 mm and outer radius less than 20 mm. Therefore, the size of the designed antenna must comply with the requirements of the limited mounting space. Tapered loop antenna element - Antennas Direct, Inc. A Broadband Eccentric Annular Slot Antenna, Young Hoon Suh and Ikmo Park, Department of Electrical Engineering, Ajou University, pp. 94-97, IEEE copyright notice 2001. A Printed Crescent Patch Antenna for Ultrawideband Applications, Ntsanderh C. Azenui an H.Y.D. Yang, IEEE Antennas and Wireless Propagation Letters, vol. 6, 2007, pp. 113-116. Microwave Engineering Corporation | Omni-Directional Antennas L-BAND ANNULAR SLOT ANTENNAS. M.E.C.’s c390-152 L-band annular slot, flush-mount antennas feature an omni-directional azimuth pattern and high peak power handling capability. Its radiation pattern and gain are similar to a matched quarterwave monopole. This antenna meets MIL-A-25707 and is designed to IFF and/or TACAN applications. A broadband eccentric annular slot antenna - IEEE Conference ... Abstract: We have proposed and investigated broadband eccentric annular slot antennas as an effective way to achieve a wider bandwidth in annular slot ...
This section presents numerical analysis of antenna performance when ..... based on a broadband eccentric annular monopole antenna with ground plane slots.
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 (School of Elec- tronics Engineering, Ajou University): JKEES, vol. Patch Loading Circular Aperture Slot Antennas for Broadband ... This paper proposes a new and simple design for a broadband planar antenna with bi- and uni-directional radiation for WLAN applications. The broadband operation is realized by loading a patch into a circular aperture slot, which is fed by a micostrip line on the other side of the slot. USD666178S1 - Antenna - Google Patents A Broadband Eccentric Annular Slot Antenna, Young Hoon Suh and Ikmo Park, Department of Electrical Engineering, Ajou University, pp. 94-97, IEEE copyright notice 2001. A Printed Crescent Patch Antenna for Ultrawideband Applications, Ntsanderh C. Azenui an H.Y.D. Yang, IEEE Antennas and Wireless Propragation Letters, vol. 6, 2007, pp. 113-116.
A low-frequency annular-slot antenna - NIST Page A Low-Frequency Annular-Slot Antenna James R. W ait The radiation characteristics of an annular slot cut in an ideally conducting ground plane are discussed. The voltage impressed between the concentric edges is assumed to be constant around the slot. The annular slot is backed by a hemispherical cavity which has A Broadband Multi-layer Dual-polarization Slot Antenna ... Suh Y H, Park I. A broadband eccentric annular slot antenna[C]// Antennas and Propagation Society International Symposium. 2001:94-97 vol.1. [4] Mobashsher A T, Islam M T, Misran N. Loaded Annular Ring Slot Microstrip Antenna For Wideband And Multi-band Operation[J]. Microwave Journal, 2011, 54(9):146-158. BROADBAND CIRCULARLY POLARIZED DIELECTRIC RESONATOR ... the work in [18], a broadband CP cylindrical DRA with annular slot excitation is investigated here. Figure 1 shows the geometry of the proposed antenna. The cylindrical DR has a radius of a = 5mm, a height of d = 12mm and a relative permittivity "d = 10:2. The DR is positioned on top of the substrate. An annular slot and an L-shaped microstrip ...