Propeller-Shaped Antenna: A Steerable Ultrawideband Planar Antenna

Author

Takemoto, Erika ; Hirose, Akira

Author_Institution

Dept. of Bioeng., Univ. of Tokyo, Tokyo, Japan

Volume

13

fYear

2014

fDate

2014

Firstpage

1140

Lastpage

1143

Abstract

We propose an ultrawideband planar antenna having a controllable radiation pattern for coarse steering to avoid fading in indoor communications. In the antenna, multiple tapered-slot antenna (TSA) elements are connected to a feeding part through p-i-n diode switches. The TSA elements have such wide aperture and round shape that the mutual coupling among them is effectively suppressed, resulting in sufficient steering ability. Simulation and experiments demonstrate that the radiation is switched to intended directions. Reflection S₁₁ is below or around -10 dB in the frequency range of 3.1-10.6 GHz independent of the switching condition. Basic characteristics are investigated and discussed.

Keywords

adaptive antenna arrays; antenna radiation patterns; indoor communication; p-i-n diodes; planar antenna arrays; slot antenna arrays; ultra wideband antennas; TSA elements; coarse steering; controllable radiation pattern; frequency 3.1 GHz to 10.6 GHz; indoor communications; multiple tapered-slot antenna; p-i-n diode switches; propeller-shaped antenna; smart antennas; steerable ultrawideband planar antenna; steering ability; switching condition; PIN photodiodes; Slot antennas; Switches; Ultra wideband antennas; Directive antenna; taper-slot antenna; ultrawideband antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2330602

Filename

6832503