Abstract
This article describes a new miniaturized omni-directional antenna with quasi-self-complementary structure for wireless communication applications. A novel ground structure composed of five rectangular plates is proposed to enhance the impedance bandwidth and reduce the antenna size. The proposed antenna is comprised of two patches surrounded by the ground structure. Two metal patches of the antenna are located on two opposite sides of the dielectric substrate. The feed patch is used to excite the radiation patch. This unique design is realized by properly choosing the suitable feed patch shape, selecting similar slot shape on the radiation patch, and tuning their dimensions. The proposed antenna with an extremely small size of 6 mm × 9 mm has an operating impedance bandwidth ranging from 4.5 to 6.1 GHz for S11 < -10 dB, which also covers the two IEEE 802.11a wireless local area network bands (5.15 - 5.35 GHz and 5.725 - 5.825 GHz). In addition to be very small in size, the antenna exhibits omni-directional radiation patterns in the entire operating bandwidth and low cross polarization. The distortionless time domain performance of the antenna is confirmed by investigation of the phase response and group delay. The obtained results in both frequency and time domain show that the proposed antenna is suitable for use in wireless communication systems.
Highlights
Wireless communication technology has received much attention in the modern world especially during the lastHow to cite this paper: Dastranj, A. (2016) A New Compact Omni-Directional Quasi-Self-Complementary Antenna for Wireless Communication Systems
For size reduction of the wireless communication system, the antenna must be small enough to be placed inside the system
The proposed structure is especially suitable for applications in wireless communication systems, where a single antenna is needed to operate simultaneously at different bands, such as IEEE 802.11a wireless local area network (WLAN) bands at 5.15 - 5.35 GHz and 5.725 - 5.825 GHz
Summary
How to cite this paper: Dastranj, A. (2016) A New Compact Omni-Directional Quasi-Self-Complementary Antenna for Wireless Communication Systems. The antenna consists of an obtuse pie-shaped radiating patch fed by a 50 Ω microstrip line and its complementary metal structure connected to the ground plane It provides two separate impedance bandwidths of 292 MHz and 1548 MHz centered at 2.45 GHz and 5.5 GHz, respectively. A new design of compact omni-directional QSCA fed by a 50 Ω coaxial cable without using matching circuit is proposed for wireless communication applications. The designed antenna has a linear phase response and almost constant group delay Based on these characteristics, the proposed structure is especially suitable for applications in wireless communication systems, where a single antenna is needed to operate simultaneously at different bands, such as IEEE 802.11a WLAN bands at 5.15 - 5.35 GHz and 5.725 - 5.825 GHz
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
