Performance of Groundplane Shaping in Four-Element Dualband MIMO Antenna

• Published in: Telkomnika Vol. 15; no. 1; p. 220
• Main Authors: Pramono, Subuh, Hariyadi, Tommi, Subagio, Budi Basuki
• Format: Journal Article
• Language: English
• Published: Yogyakarta Ahmad Dahlan University 01.03.2017
• Subjects: Antenna design; Antenna radiation patterns; Baluns; Dipole antennas; Ground plane; High frequencies; Impedance matching; Low frequencies; Mutual coupling; Optimization; Slits; Substrates
• ISSN: 1693-6930; 2302-9293
• DOI: 10.12928/telkomnika.v15i1.5002

(ProQuest: ... denotes formulae omitted.) 1.Introduction In recent years, telecommunication technology is moving toward into high speed data rate communication. Recently, receiver and transmitter use multiple antennas, it is well known as multiple input multiple output (MIMO) antenna system. Various techniques were explored to enhance the bandwidth, such as using feed optimization, ground plane slits and shaping [2], bevels, different thickness of dielectric substrate [3], slots on the patch. Specifically, we focus on the effects of various patterns of groundplane shaping on main antenna parameters i.e. VSWR, bandwidth, gain, mutual coupling, and radiation pattern. Section II detail explains three subjects which are single element of bow tie dipole antenna design, four element dualband MIMO antenna design, various patterns of groundplane shaping. A single antenna element on this proposed four element dualband MIMO antenna is designed using by bowtie dipole antenna with an integrated balun. 2.1.Bowtie Dipole Antenna In this research, single bowtie dipole antenna comprises bowtie dipole, arm dipole, matching impedance, balun, and feeder. Cornered spatial groundplane pattern yields widest bandwidth, 282 MHz or 15.24 % of center frequency, at low frequency (1800 MHz) while full groundplane pattern creates a 135.2 MHz bandwidth at high frequency (2300 MHz).In addition, cornered spatial groundplane pattern also generates a lowest VSWR, it is 1.21, both low frequency and high frequency. [...]cornered spatial and full groundplane pattern also produces a better return loss than both spiral and crossed middle groundplane pattern.Third,all various groundplane patterns give a equally value of mutual coupling. Proceedings of the...