Abstract
Based on the same broadband eccentric annular monopole, another design is considered without slots in the ground plane. The tag is based on a square-shaped transmission line that rounds the monopole. The antenna size has been increased to slightly reduce its center frequency. 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. The results of the annular-ring microstrip antenna show good performance of a dual-band operation, which meets the requirement of Global Navigation Satellite System (GNSS) applications. INDEX TERMS: Broadband feed network, circularly polarized (CP), Annular Ring Slot Antenna (ARSA), dual-band patch antenna, Global Navigation Satellite System. This paper presents a novel dual-band circularly polarized patch antenna for precise satellite navigation. The radiation elements are composed of the inner cross-shaped patch and the outer annular patch which are printed on the same surface of one substrate. Two patches work in different bands, respectively, and emit dual-band circularly polarized radiation. Annular slot antenna keeping constant the operation frequency. 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. BROADBAND CONCENTRIC RINGS FRACTAL SLOT ANTENNA Ravi Kumar Joshi(1) and A. Harish(2) (1)Department of Electrical Engineering, Indian Institute of Technology, Kanpur-208 016, India, Email: ravikj@iitk.ac.in (2)As (1) above, but Email: arh@iitk.ac.in Abstract: A microstrip fed dual band printed hybrid antenna consisting of an annular slot ring and an inner. The measured results of the antenna illustrate that maximum RHCP gain of the antenna is 4.72 dBi in the low band and 3.98 dBi in the high band, the 3 dB gain bandwidth is 70 MHz in the low band and 65 MHz in the high band.
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. The frequency characteristics and the radiation performance of the antenna were studied theoretically and experimentally. The obtained results show that the proposed antenna can offer effective bandwidth for the two cases in bi- and uni-directional radiation. For the former, more than 75% impedance bandwidth can be obtained whereas for the latter, better than 20 dB front–back radiation ratio can be achieved.
This is a preview of subscription content, log in to check access.
References
- 1.
Y. Yashimura, “A Microstrip Slot Antenna”, IEEE Transactions on Antennas and Propagation, Vol. AP-29, pp. 2–24, Jan. 1981.
- 2.
R.C. Johnson and H. Jasik, Antenna Engineering Handbook, New York: McGraw-Hill, 1984.
Can I fit 6 or 4 modules/guns to that ship? However if for example the Reaper rookie ship is listed as:Low slots: 1Med slots: 1High slots: 2Launcher hardpoints: 0Turret hardpoints: 2Are those Turret hardpoints the same fixing points as the two high slots? Jabba not enough upgrade slots windows 10. They are signified by the white 'tri' symbol as available for guns etc.
- 3.
R. Card, P. Bhartia, I. Bahl and A. Ittipiboon, Microstrip Antenna Design Handbook, Artech House, INC. 2001.
- 4.
F. Le. Bolter and A. Louzir, “Multi-Band Annular Slot Antenna for WLAN Applications”, IEEE 11 International Conference on Antenna and Propagation, UK, pp. 529–532, April 2001.
Best Texas Hold’em Poker Sites. Over the past two decades, we’ve seen Texas Holdem explode in popularity among gamblers and gamers of all ages from all over the world. Most of this explosion can be attributed to the growth of online poker and its ability to enable anyone with a computer and an internet connection to get in on the action.
- 5.
X. Qing and M. Chia, “Broadband Annular Dual Sot Antenna for WLAN Applications”, IEEE AP-S International Symposium, Vol. 2, pp. 452–455, June 2002.
- 6.
J.S. Chen, “ Multi-Frequency Characteristics of Annular Ring Slot Antennas”, Microwave and Optical Technology Letters, Vol. 38, No. 6, pp. 506–511, Sept. 2003.
- 7.
H. Tehrani and K. Chang, “Multifrequency Operation of Microstrip-Fed Slot Ring Antenna on Thin Low Dielectric Permivity Substrates”, IEEE Transactions on Antennas and Propagation, Vol. 50, No. 9, pp. 1299–1308, Sept. 2002.
- 8.
Y.H. Suh and I. Park, “A Broadband Eccentric Annular Slot Antenna”, IEEE AP-S International Symposium, Vol. 1, pp. 94–97, July 2001.
- 9.
J. Powell and A. Chanadrakasan, “Differential and Single Ended Elliptical Antennas for 3.1–10.6 GHz Ultra Wideband Communication”, IEEE AP-S International Symposium, Vol. 3, pp. 2935–2938, June 2004.
- 10.
T. Hikage, M. Omiya and K. Itoh, “Considerations on Performance Evaluation of Cavity-Backed Slot Antenna Using the FDTD Technique”, IEEE Transactions on Antennas and Propagation, Vol. 49, pp. 1712–1717, Dec. 2001.
- 11.
M. Omiya, T. Hikage, K. Murakami and K. Itoh, “Slot Antenna Consisted of Two Conductive Plates and Thin Wires”, IEEE AP-S International Symposium, Vol. 3, pp. 545–548, July 2001.
- 12.
Q. Li, Z. Shen and P.T. Teo, “Microstrip-Fed Cavity-Backed Slot Antennas”, Microwave and Optical Technology Letters, Vol. 33, No. 4, pp. 229–233, May 2002.
- 13.
A.V. Sulima, “Cavity-Backed Slot Antenna”, IEEE AP-S International Symposium, Vol. 4, pp. 22–27, 2003.
- 14.
IE3D, Zeland, USA.
- 15.
ANTCOM, http://www.antcom.com, Antcom. USA.
Author information
Correspondence to Tayeb A. Denidni.
A Broadband Eccentric Annular Slot Antenna Cable
Additional information
Tayeb A. Denidni (M’98-SM04) received the B.Sc. degree in electronic engineering from the University of Setif, Setif, Algeria, in 1986, and the M.Sc. and Ph.D. degrees in electrical engineering from Laval University, Qubec City, QC, Canada, in 1990 and 1994, respectively. From 1994 to 1996, he was an Assistant Professor with the engineering department, Universit du Qubec in Rimouski (UQAR), Rimouski, QC, Canada. From 1996 to 2000, he was also an Associate Professor at UQAR, where he founded the Telecommunications laboratory. Since August 2000, he has been with the Personal Communications Staff, Institut National de la Recherche Scientifique (INRS-EMT), Universit du Qubec, Montreal, QC, Canada. His current research interests include planar microstrip antennas, dielectric resonator antennas, adaptive antenna arrays, microwave and RF design for wireless applications, phased arrays, microwave filters, RF instrumentation and measurements, microwave and development for wireless communications systems. Dr. Denidni is a Member for the Order of Engineers of the Province of Qubec, Canada. He is also a Member of URSI (Commission C). He has authored more than 60 papers in refereed journals and conferences.
Qinjiang Rao received the Ph.D. degree from Peking University, Beijing, China, in July 1999. Now he is a postdoctoral fellow at INRS-EMT, University of Quebec, Montreal, Canada. Before this term, he even worked as a postdoctoral fellow at Kyoto University, Kyoto, Japan, and University of Calgary, Calgary, Canada, respectively. His research fields focus on antennas, high-frequency electromagnetic simulators, radio wave propagation and scattering. In 1999, he was the recipient of a Post-doctoral Fellowship awarded by the JSPS (Japan Society for the Promotion of Science.)
A Broadband Eccentric Annular Slot Antenna Reviews
Rights and permissions
About this article
Cite this article
Denidni, T.A., Rao, Q. Patch Loading Circular Aperture Slot Antennas for Broadband WLAN Applications. Wireless Pers Commun33, 121–129 (2005) doi:10.1007/s11277-005-8261-9
- Issue Date
- DOI
Keywords
- Microstrip slot antennas
- patch antenna
- front–back radiation ratio