volume | PIER Journals

2007-11-28

Two New Loaded Compact Palnar Ultra-Wideband Antennas Using Defected Ground Structures

S. Hosseini,

Dr. S. Hosseini

Department of Electrical Engineering

Tarbiat Modares University (TMU)

Iran

Homepage

Zahra Atlasbaf,

Dr. Zahra Atlasbaf

Department of Electrical Engineering

Tarbiat Modares University (TMU)

Iran

Homepage

Keyvan Forooraghi

Professor Keyvan Forooraghi

Department of Electrical Engineering

Tarbiat Modares University

Iran

Homepage

Progress In Electromagnetics Research B, Vol. 2, 165-176, 2008

doi:10.2528/PIERB07111802 | Google Scholar

Abstract

In this paper, two new line-fed loaded planar antennas are proposed for ultra-wideband applications. The first antenna is a circular patch with a circular ring as a Defected Ground Structure (DGS). A 50 Ohm microstrip line passes through the antenna which is symmetrical between the feed and the load. The impedance bandwidth of the first antenna with S11 < -10 dB is more than 10 GHz, from 3 GHz to more than 13 GHz, in both simulation and measurement. It will be shown that the antenna has quite a stable radiation pattern and also high gain over its bandwidth. The second configuration is a rhomboidal patch which a 50 Ohm microstrip line passes through it. A rhomboidal DGS ring is employed to widen the bandwidth of the proposed antenna. The impedance bandwidth with VSWR < 2 is more than 10 GHz, from 3 GHz to more than 13 GHz, in both simulations and measurement. The second antenna has also quite a stable radiation pattern and high gain values in its frequency band. For these antennas, a wideband 50 Ohm load has been used. Finally, it should be mentioned that the antennas have very compact structures as well as very simple configurations.

Download Full Article (230) View Full Article volume

Citation

Copy Export

S. Hosseini, Zahra Atlasbaf, and Keyvan Forooraghi, "Two New Loaded Compact Palnar Ultra-Wideband Antennas Using Defected Ground Structures," Progress In Electromagnetics Research B, Vol. 2, 165-176, 2008.
doi:10.2528/PIERB07111802

References

1. Chen, Y. and Y. P. Zhang, "A planar antenna in LTCC for single-package ultrawide-band radio," IEEE Transactions on Antennas and Propagation, Vol. 53, No. 9, September 2005.
doi:10.1109/TAP.2005.854541 Google Scholar

2. Zhao, C.-D., "Analysis on the properties of a coupled planar dipole UWB antenna," IEEE Antennas and Wireless Propagation Letters, Vol. 3, 2004. Google Scholar

3. Hosseini, S. A., Z. Atlasbaf, and K. Forooraghi, "A new compact ultra wide band (UWB) planar antenna using glass as substrate," Journal of Electromagnetic Waves and Applications, Vol. 22, No. 1, 47-59, 2008.
doi:10.1163/156939308783122742 Google Scholar

4. Ma, T.-G. and C.-H. Tseng, "An ultrawideband coplanar waveguide-fed tapered ring slot antenna," IEEE Transactions on Antennas and Propagation, Vol. 54, No. 4, April 2006.
doi:10.1109/TAP.2006.872562 Google Scholar

5. Chair, R., A. A. Kishk, K. F. Lee, C. E. Smith, and D. Kajfez, "Microstrip line and CPW fed ultra wideband slot antennas with U-shaped tuning stub and reflector," Progress In Electromagnetics Research, Vol. 56, 163-182, 2006.
doi:10.2528/PIER05060701 Google Scholar

6. Kwon, D.-H. and Y. Kim, "Suppression of cable leakage current for edge-fed printed dipole UWB antennas using leakage-blocking slots," IEEE Antennas and Wireless Propagation Letters, Vol. 5, 2006. Google Scholar

7. Klemm, M. and G. Troester, "EM energy absorption in the human body tissues due to UWB antennas," Progress In Electromagnetics Research, Vol. 62, 261-280, 2006.
doi:10.2528/PIER06040601 Google Scholar