Wideband Integrated Antenna Dual Polarization
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David Zhang 1 Wideband Integrated Antenna 4 th SKADS workshop, Lisbon 2-3 Oct, 2008 Wideband Integrated Antenna Wideband Integrated Antenna Dual Polarization Dual Polarization Extended Trade-off Study by the University of Manchester
description
Wideband Integrated Antenna Dual Polarization. Extended Trade-off Study by the University of Manchester. Outline. High-level schedule review Infinite elements array simulations and measurements Vivaldi Antenna Bunny Ear Combline Antenna (BECA) Octagon Rings Antenna (ORA) - PowerPoint PPT Presentation
Transcript of Wideband Integrated Antenna Dual Polarization
David Zhang 1Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Wideband Integrated Antenna Dual Wideband Integrated Antenna Dual Polarization Polarization
Extended Trade-off Study by the University of Manchester
David Zhang 2Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
OutlineOutline
• High-level schedule review
• Infinite elements array simulations and measurements– Vivaldi Antenna
– Bunny Ear Combline Antenna (BECA)
– Octagon Rings Antenna (ORA)
• Finite elements array study
• Summary and future work
David Zhang 3Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Schedule reviewSchedule review
Jun July Aug Sep Oct Nov Dec
Phase 1Phase 1
Phase 2Phase 2
Phase 3Phase 3
Feb Mar MayJan Apr Jun July Aug Sep Oct Nov Dec
2007 2008
Conventional Vivaldis
•Simulations
•Verifications
•Improved Vivaldis
•BECA
•ORA
•Mini array studying
Finite Array Studying
Triangular grid investigation
1st generation1st generation 2nd and 3rd generation2nd and 3rd generation 4th generation4th generation
David Zhang 4Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Integrated Aperture Array AntennasIntegrated Aperture Array Antennas
– Vivaldi Antennas
– Bunny Ear Combline Antennas (BECA)
– Octagon Rings Antennas (ORA)
David Zhang 5Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Conventional VivaldisConventional Vivaldis
David Zhang 6Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Improved VivaldisImproved Vivaldis
Arlon Diclad 880
er=2.2,
Dissipation factor: 0.0009
Thickness: 1.27mm
PTFE, Single-sided copper
er=3.4,
Dissipation factor: 0.007
Thickness: 50 μm
David Zhang 7Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Infinite array performance for Infinite array performance for improved Vivaldis 170mmimproved Vivaldis 170mm
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1-40
-35
-30
-25
-20
-15
-10
-5
0
Frequency (GHz)
Ret
urn
loss
(dB
)
Broadside
H45o E45o
David Zhang 8Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Bunny Ear Combline Antenna Bunny Ear Combline Antenna (BECA)(BECA)
David Zhang 9Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Single elementSingle element
Probe for pattern measurementBECA element
David Zhang 10Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Pattern for BECAPattern for BECA
0 5 10 15 20 25 30 35 40 45-12
-10
-8
-6
-4
-2
0
Angle (deg)
No
rma
lise
d m
ag
nitu
de
(d
B)
Single element, CSTSingle element, HFSSSingle element, MeasuredInfinite array, HFSS11x11 finite array, active
0 5 10 15 20 25 30 35 40 45-4
-3.5
-3
-2.5
-2
-1.5
-1
-0.5
0
Angle (deg)
No
rma
lise
d m
ag
nitu
de
(d
B)
Single element, CSTSingle element, HFSSSingle element, MeasuredInfinite array, HFSS11x11 finite array, active
0 5 10 15 20 25 30 35 40 45-7
-6
-5
-4
-3
-2
-1
0
Angle (deg)
No
rma
lise
d m
ag
nitu
de
(d
B)
Single element, CSTSingle element, HFSSSingle element, MeasuredInfinite Array, HFSS11x11 finite array, active
E-plane H-plane D-plane
David Zhang 11Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
BECA linear array 8BECA linear array 8××11
David Zhang 12Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Insertion loss for the centre Insertion loss for the centre element of the linear arrayelement of the linear array
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1-30
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-15
-10
-5
0
Frequency (GHz)
Ret
urn
loss
(dB
)
MeasuredHFSSCST
David Zhang 13Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Dual polarisation elementDual polarisation element
X-cfg L-cfg
David Zhang 14Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
X-cfg over L-cfg for BECAX-cfg over L-cfg for BECA
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1-35
-30
-25
-20
-15
-10
-5
Frequency (GHz)
Ret
urn
loss
(dB
)
Broadside
Eplane 45o
Hplane 45o
Dplane 45o
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1-40
-35
-30
-25
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-15
-10
-5
0
Frequency (GHz)
Ret
urn
loss
(dB
)
Broadside
Eplane 45o
Hplane 45o
Dplane 45o
L-cfg X-cfg
David Zhang 15Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
CoPol over Xpol ratio in CoPol over Xpol ratio in DD-plane-plane
0 5 10 15 20 25 30 35 40 45-8
-7
-6
-5
-4
-3
-2
-1
0
Angle (deg)
No
rma
lise
d p
ola
riza
tion
ra
tio (
dB
)
0.85 GHz, Triplate Vivaldi0.9 GHz, Triplate Vivaldi0.95 GHz, Triplate Vivaldi1 GHz, Triplate Vivaldi0.85 GHz, BECA, X config0.9 GHz, BECA, X config0.95 GHz, BECA, X config1 GHz, BECA, X config
David Zhang 16Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Octagon Rings Antennas (ORA)Octagon Rings Antennas (ORA)
David Zhang 17Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Munk Dipole Array Munk Dipole Array – – Layered materials Layered materials
David Zhang 18Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Munk Dipole Array – Munk Dipole Array – Meta material layerMeta material layer
David Zhang 19Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Performance for MUNK Performance for MUNK Dipole Array, 150mm UnitDipole Array, 150mm Unit
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.21
2
3
4
5
Frequency (GHz)
VS
WR
(a)
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.21
2
3
4
5
Frequency (GHz)
VS
WR
(b)
BS45E45H
BS45E45H
a) 2 Layered materials
b) Reflection facets
David Zhang 20Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Performance for different Performance for different element shapes, 165mmelement shapes, 165mm
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.21
2
3
4
5
Frequency (GHz)
VS
WR
(a)
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.21
2
3
4
5
Frequency (GHz)
VS
WR
(b)
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.21
2
3
4
5
Frequency (GHz)
VS
WR
(c)
BS
45E
45H
BS
45E
45H
BS
45E
45H
a) Squares
b) Circles
c) Octagons
David Zhang 21Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Octagon Rings Octagon Rings Array Array 150mm unit cell150mm unit cell
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.30
2
4
6
8
10
12
Frequency (GHz)
VS
WR
BS
45oE
45oH
4:1
David Zhang 22Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
ORA measurementsORA measurements
David Zhang 23Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
4 4 × 3 finite ORA × 3 finite ORA Centre elementCentre element
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2-45
-40
-35
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-10
-5
0
Frequency (GHz)
Ret
urn
loss
(dB
)
MeasuredSimulation
David Zhang 24Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
CoPol to Xpol ratio CoPol to Xpol ratio in in DD-plane-plane
0 5 10 15 20 25 30 35 40 4510
12
14
16
18
20
22
24
26
28
30
Angle (deg)
Pol
ariz
atio
n R
atio
(dB
)
Measurement, 750MHzMeasurement, 850MHzSimulation, 750MHzSimulation, 850MHz
David Zhang 25Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Finite element array studyingFinite element array studying
David Zhang 26Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
ORA finite arrayORA finite array
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1-45
-40
-35
-30
-25
-20
-15
-10
-5
0
Frequency (GHz)
Ret
urn
loss
(dB
)
3 x 4 Measured3 x 4 SimulationInfinite Array4 x 4 Simulation
David Zhang 27Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
ORA 8 ORA 8 × 8 scan pattern BS× 8 scan pattern BS
David Zhang 28Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
ORA 8 ORA 8 × 8 scan pattern E45× 8 scan pattern E45oo
David Zhang 29Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
BECA 11 BECA 11 × 11 finite array× 11 finite array
David Zhang 30Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Size of finite arraySize of finite array
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2-60
-50
-40
-30
-20
-10
0
10
Frequency (GHz)
Inse
rtio
n lo
ss (
dB
)Infinite array11x11 finite array
David Zhang 31Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
8x8 centre section in 11x11 8x8 centre section in 11x11 finite array beam scanfinite array beam scan
David Zhang 32Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
SummarySummaryParameters Vivaldi BECA ORA
Bandwidth(450 scan, VSWR<2)
0.3~0.97GHz 0.3~0.98GHz 0.3~1 GHz
Polarisation change (0o to 45o scan)
Dramatic change Moderate Small
Immersed element pattern
Close to a cosine function
Close to a cosine function
Better than a cosine function
Element separation to meet bandwidth
170mm 170mm 165mm
The factors to influence costs:• Element separation
• The feeding scheme
• Loss of gain with scan
David Zhang 33Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Future workFuture work
• 16 × 16 finite elements arrays
• Triangular grid element investigation
David Zhang 34Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
PublicationsPublications
• Journals
“Bunny Ear Combline Antenna for dual-polarized aperture array,” to be submitted to IEEE Trans. On Antennas and Propagation.
• Patents
“Compact, low cost, wideband array antennas,” pending.
David Zhang 35Wideband Integrated Antenna4th SKADS workshop, Lisbon 2-3 Oct, 2008
Thank you!Thank you!
