5/28/2018 Triangular Antenna
1/7
A Novel Triangular Antenna for UWB CommunicationsDr. Arun
Raaza1, P. Sathish Kumar1and K. Ramesh1
1Centre for Advanced Research and Development, VELS University,
Chennai - 600117, India
ABSTRACT
A novel triangular antenna for beam steering applications is
proposed. The triangular antenna has three feeding pointseach on
the edge points of three conducting strips, which when excited one
at a time steer the beam at step of 120throughout the 30 of space
and the antenna operates at .!"#$ and %"#$ thus providing
multi&channel operation inthe '() region.KEYWORDS
Beam Steering, Triangular Antenna, Ultra Wide Band and
Multichannel
Correspondence
Dr. Arun Raaza, Research Scientist, Centre for Advanced Research
and Development, VELS University, Chennai - 600117, India
1. INTRODUCTION
The modern era of communication has witnessed wideincorporation
of pattern steerable antennas. Therecentl* proposed s+uare loop
antenna 1- for patternsteerable applications when fed one at a time
steers thebeam at step of %0, operates at .2"#$ and has a gainof
/.%d). This letter proposes three feed triangularantenna structure
which when fed one at a timegenerates a titled beam, steers it in
steps of 120 andoperates in .!"#$ and %"#$ providing
multi&channeloperation in '() region. The multi&channel
operationand high gain is the e* advantage of the triangularantenna
over 1-. oreover, since the triangular is as*mmetric antenna lie
s+uare loop 1-, it also taclesthe problem of polari$ation
randomness and parametervariations which were introduced b* the
single ormulti&turn rectangular beam steering spiral t*pe
antennas 2&-. As with 1-, the design of the
triangularantenna is intended for vertical polari$ation s*stemsonl*
and hence, all the tilted beams of interest have thepolari$ation
dominance in the direction of 4. Thetriangular antenna is
deplo*able in base stations for(iA5 applications, smart wireless
devices and hashuge potential for future generation
wirelesstransceivers. 6n addition, the beam steering propert*
oftriangular antenna maes wireless device to steer mostof its
radiated power at a target direction, resulting in amuch lower loss
of signal power in the unwanteddirections and improves the
longevit* of the devicebatter*. This propert* maes triangular +uite
suitablefor militar* based applications.
2. ANTENNA CONFIGURATION7ig. 1 shows the top and side view of
the triangularantenna, the antenna has conductor arm side
lengthl830mm, trac width w81.mm and the whole unit is
baced b* a conducting ground plane. The antenna hasa
permittivit* of 3. and a thicness of h812mm. Theantenna has a total
of three feeding points. 6n view ofthe fact that the antenna is fed
from the edges itsfeeding configuration is referred to as 9dge
pointsfeeding: and is denoted b* 9:. #ence, the threefeeding point
configurations are A, ), and ;. 7ig. ?, it is observed that
theantenna generates a tilted beam >@max82/0 and 4max81/?. 7or A
configuration the @max is 2/0, for )configuration the @maxis 10 and
for ; configurationthe @maxis 30 the titled beam points awa* from
thefeeding point. 7ig. 3 and shows the conical radiationpattern
cuts for antenna A,) and cconfiguration inthe direction of maximum
radiation at .!"#$ and%"#$ respectivel*.
5. BEAM SWITCHING7ig. shows the three dimensional radiation
pattern1d) cone for 4for all the three feeding configuration.The
beam for configuration Aat .!"#$ has 4max8/and @max8%0, ) has
4max8/ and @max8210 and;has 4max8/ and @max8 330. Again the beam
forconfiguration Aat %"#$ has 4max81/ and @max82/0,) has 4max81/
and @max810and ;has 4max81/
and @max8 30. This shows that 4max for both .!"#$and %"#$
remains constant at / and 1/ respectivel*where as @max varies in
steps of 120. Thus b*selecting each of the three feeds in se+uence
acomplete coverage of 30 degree space can becovered in steps of
120, reali$ing a pattern steerableantenna. The average gain beams
for all the 3configurations is %. d) for .!"#$ and %.%d) for%"#$
and the* are linearl* polari$ed in the direction of4.
6. FIGURES
![Compact Triangular Slot Antenna with Improved … · Compact Triangular Slot Antenna with Improved ... .Zeland IE3D [18] ... A. Balanis, “Advanced Engineering Electromagnetics”,](https://img.pdfslide.us/doc/110x75/5acbed9e7f8b9aa1518bb8a7/compact-triangular-slot-antenna-with-improved-triangular-slot-antenna-with-improved.jpg)
