The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.
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Transcript of The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.
![Page 1: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/1.jpg)
The Design And Simulation of 7mm Ortho-mode Transducer
Microwave Receiver Room
Yunwei Ning
![Page 2: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/2.jpg)
What is the polarization of electromagnetic wave?
Vertical
Horizontal
)/sin( txAEy
)/sin( txAEz
Linearly Polarized Signals
![Page 3: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/3.jpg)
What is the polarization of electromagnetic?
Right Circular
Left Circular
)90/sin( txAEy
)/sin( txAEz
)90/sin( txAEy
)/sin( txAEz
Radio Astronomy Definition To convert linear to circular, a 90 degree phase-shifter is needed which retards one of the linear polarizations.
Circularly Polarized Signals
![Page 4: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/4.jpg)
Why do we need OMT?
垂直极化 水平极化
V/H (垂直 /水平 )
![Page 5: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/5.jpg)
The location of OMT in the receiver and why is the OMT is so important?
Feed Horns
OMT
LNA
![Page 6: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/6.jpg)
OMT45º
Tw
ist90º
PhaseShifter
→
Tra
nsi
tio
n
Myl
ar W
ind
ow
Circular Polarizer
LO Ref12-16.7 GHz@ 0 dBm
NoiseDiode
Termination orPulse Cal Input
MagicTee
WG toCoax
WG toCoax
22 dB
KaDCM
RFPost-Amp
NF < 5 dB
8 dB
IFPost-Amp
NF < 2.5 dB
x3
25-41GHz
44-49 GHz
RCP IF Output8-18 GHz
DC-18GHz
KaDCM
x344-49 GHz
LCP IF Output8-18 GHz
22 dB
RFPost-Amp
NF < 5 dB
8 dB
IFPost-Amp
NF < 2.5 dB
25-41GHz
DC-18GHz
35 dB
LNACoaxto WG
2.9m
m
RC P
Cal Coupler
Qu
artz
Win
do
w
2.9m
m
Coaxto WG
35 dB
LNA Qu
artz
Win
do
w
Cal Coupler
LC
P
RF26-40 GHz
Thirteenth Synthesis Imaging Workshop - 2012
The location of OMT in the receiver and why is the OMT is so important?
![Page 7: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/7.jpg)
The types of OMT
CSIRO. Receiver Systems for Radio Astronomy
![Page 8: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/8.jpg)
The types of OMT
CSIRO. Receiver Systems for Radio Astronomy
![Page 9: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/9.jpg)
What limit the bandwidth?
CSIRO. Receiver Systems for Radio Astronomy
![Page 10: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/10.jpg)
What limit the bandwidth?
CSIRO. Receiver Systems for Radio Astronomy
![Page 11: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/11.jpg)
What limit the bandwidth?
![Page 12: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/12.jpg)
What limit the bandwidth?
![Page 13: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/13.jpg)
What limit the bandwidth?
CSIRO. Receiver Systems for Radio Astronomy
![Page 14: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/14.jpg)
What limit the bandwidth?
CSIRO. Receiver Systems for Radio Astronomy
TE (10) TE (2n+1 0)TE (10) TE (2n+1 2n)
![Page 15: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/15.jpg)
Turnstile Junction Waveguide OMT
CSIRO. Receiver Systems for Radio Astronomy
![Page 16: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/16.jpg)
Turnstile Junction
Pyramidal stub Square prism + pyramidal stub
Cylindrical stub
2 cylinders
conical stub 2 square prism
![Page 17: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/17.jpg)
Turnstile Junction
CSIRO. Receiver Systems for Radio Astronomy
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
1.00
1.02
1.05
1.08
1.10
1.13
Y1
tourniquetXY Plot 1 ANSOFT
Curve Info max
VSWR(w p1:1)Setup1 : Sw eep 1.1148
VSWR(w p1:2)Setup1 : Sw eep 1.1226
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
-3.10
-3.08
-3.06
-3.04
-3.02
-3.00
-2.98
-2.96
-2.94
-2.92Y
1tourniquetXY Plot 5 ANSOFT
Curve Info max
dB(S(w p1:2,w p2:1))Setup1 : Sw eep -2.9249
dB(S(w p1:2,w p3:1))Setup1 : Sw eep -2.9507
![Page 18: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/18.jpg)
E-plane bend
CSIRO. Receiver Systems for Radio Astronomy
![Page 19: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/19.jpg)
E-plane bend
CSIRO. Receiver Systems for Radio Astronomy
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
1.000
1.002
1.005
1.008
1.010
1.013
1.015
1.018
VS
WR
(wp
1)
e_bendXY Plot 3 ANSOFT
Curve Info max
VSWR(w p1)Setup1 : Sw eepL='7mm'
1.0170
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
-0.0037
-0.0025
-0.0012
0.0000
0.0013
0.0025
0.0037d
B(S
(wp
1,w
p2
))e_bendXY Plot 4 ANSOFT
Curve Info max
dB(S(w p1,w p2))Setup1 : Sw eepL='7mm'
0.0036
![Page 20: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/20.jpg)
Y-junction Power Combiner
CSIRO. Receiver Systems for Radio Astronomy
![Page 21: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/21.jpg)
Y-junction Power Combiner
CSIRO. Receiver Systems for Radio Astronomy
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
1.020
1.025
1.030
1.035
1.040
1.045
1.050
1.055
1.060
VS
WR
(wp
1)
arc_TXY Plot 3 ANSOFT
Curve Info max
VSWR(w p1)Setup1 : Sw eepa='-1.35mm' b='0.6mm' corn='0.5mm'
1.0595
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
-3.08
-3.06
-3.04
-3.02
-3.00
-2.98
-2.96
Y1
arc_TXY Plot 3 ANSOFT
Curve Info max
dB(S(w p1,w p2))Setup1 : Sw eepa='-1.35mm' b='0.6mm' corn='0.5mm'
-2.9982
dB(S(w p1,w p3))Setup1 : Sw eepa='-1.35mm' b='0.6mm' corn='0.5mm'
-2.9680
![Page 22: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/22.jpg)
7-step Tchebyschev Transformer
CSIRO. Receiver Systems for Radio Astronomy
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
1.01
1.02
1.03
1.04
1.05
1.06
1.07
VS
WR
(wp
1)
zukangpipeiXY Plot 3 ANSOFT
Curve Info max
VSWR(w p1)Setup1 : Sw eepjt4_L='2.5mm' jt4_w ='4mm'
1.0647
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
-0.0045
-0.0040
-0.0035
-0.0030
-0.0025
-0.0020
-0.0015
-0.0010
-0.0005
0.0000
dB
(S(w
p1
,wp
2))
zukangpipeiXY Plot 3 ANSOFT
Curve Info max
dB(S(w p1,w p2))Setup1 : Sw eepjt4_L='2.5mm' jt4_w ='4mm'
-0.0003
![Page 23: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/23.jpg)
simulation result of OMT
CSIRO. Receiver Systems for Radio Astronomy
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
1.00
1.02
1.05
1.08
1.10
1.13
1.15
1.18
1.20
Y1
HFSSDesign1XY Plot 2 ANSOFT
Curve Info max
VSWR(w p1:1)Setup1 : Sw eep 1.1623
VSWR(w p1:2)Setup1 : Sw eep 1.1851
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
-0.04
-0.03
-0.02
-0.01
0.00
0.01
0.02Y
1
HFSSDesign1XY Plot 5 ANSOFT
Curve Info max min
dB(S(w p1:1,w p2:1))Setup1 : Sw eep 0.0098 -0.0335
dB(S(w p1:2,w p3:1))Setup1 : Sw eep 0.0143 -0.0313
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
-80.00
-75.00
-70.00
-65.00
-60.00
-55.00
-50.00
-45.00
Y1
HFSSDesign1XY Plot 3 ANSOFT
Curve Info max
dB(S(w p1:1,w p1:2))Setup1 : Sw eep -46.3960
dB(S(w p2:1,w p3:1))Setup1 : Sw eep -46.4452
VSWR 1.18(1.5)
Insertion Loss 0.04dB(0.3)
Orthogonal isolation -46dB(-30)
![Page 24: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/24.jpg)
Electric field vectors
CSIRO. Receiver Systems for Radio Astronomy
![Page 25: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/25.jpg)
the evolution of Turnstile Junction OMT
![Page 26: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/26.jpg)
The comparison of two bfai Junction OMT
CSIRO. Receiver Systems for Radio Astronomy
![Page 27: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/27.jpg)
Dual ridge bfai Junction OMT
CSIRO. Receiver Systems for Radio Astronomy
30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00Freq [GHz]
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.45
Y1
HFSSDesign1XY Plot 6 ANSOFT
Curve Info max
VSWR(w p1:1)Setup1 : Sw eepd_ridge2_h='1.42mm' d_ridge3_h='0.57mm'
1.3749
VSWR(w p1:2)Setup1 : Sw eepd_ridge2_h='1.42mm' d_ridge3_h='0.57mm'
1.4155
![Page 28: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/28.jpg)
The next year plan
7mm corrugated horn
![Page 29: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/29.jpg)
The next year plan
High Electron Mobility Transistor
(HEMT)
7mm low noise amplifier
![Page 30: The Design And Simulation of 7mm Ortho-mode Transducer Microwave Receiver Room Yunwei Ning.](https://reader036.fdocuments.in/reader036/viewer/2022062322/5697bfa71a28abf838c989b8/html5/thumbnails/30.jpg)
Thank you