Automated Antenna Radiation and Gain Measurement System with User Interface Sheldon Palmer Danielle...
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![Page 1: Automated Antenna Radiation and Gain Measurement System with User Interface Sheldon Palmer Danielle Walters 2/22/2012.](https://reader035.fdocuments.us/reader035/viewer/2022062801/56649e3f5503460f94b2f85d/html5/thumbnails/1.jpg)
P12311 MSD PROJECTRF ANECHOIC
CHAMBER
Automated Antenna Radiation and Gain
Measurement System with User Interface
Sheldon PalmerDanielle Walters
2/22/2012
![Page 2: Automated Antenna Radiation and Gain Measurement System with User Interface Sheldon Palmer Danielle Walters 2/22/2012.](https://reader035.fdocuments.us/reader035/viewer/2022062801/56649e3f5503460f94b2f85d/html5/thumbnails/2.jpg)
Measurement System
Frequency Generator: Agilent MXG Analog Signal Generator 100kHz-6GHz (N5181A)
Spectrum Analyzer: Hewlett Packard Spectrum Analyzer 9kHz-50GHz (8565E)
Receive Antenna
Transmit Antenna
Spectrum Analyzer
Control Box
Frequency Generator
Cable Pass Through
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Motor Arm
Allows antenna to be shifted up and down to ensure correct height and side to side to ensure it is centered
Allows antenna to be shifted forward and back to ensure correct distance
![Page 4: Automated Antenna Radiation and Gain Measurement System with User Interface Sheldon Palmer Danielle Walters 2/22/2012.](https://reader035.fdocuments.us/reader035/viewer/2022062801/56649e3f5503460f94b2f85d/html5/thumbnails/4.jpg)
Motor ArmArm with mount
Acrylic sheets sandwiching turntable
Turntable
Turntable
Acrylic Sheet
Acrylic Sheet
Motor
Motor Power Cord
Position Marker
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Reflector Antenna
Characterization
2.25 2.3 2.35 2.4 2.45 2.5-22
-20
-18
-16
-14
-12
-10
-8
-6
X: 2.4Y: -17.48
Reflector S11
Frequency [GHz]
S11
X: 2.341Y: -10.02
X: 2.374Y: -14.91
X: 2.484Y: -20.28
2.25 2.3 2.35 2.4 2.45 2.5
1.4
1.6
1.8
2
2.2
2.4
2.6
X: 2.4Y: 1.315
Frequency [GHz]
SW
R
Reflector SWR
X: 2.499Y: 1.396
X: 2.362Y: 1.596
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Microstrip Antenna
Characterization
2.25 2.3 2.35 2.4 2.45 2.5-14
-12
-10
-8
-6
-4
-2
X: 2.4Y: -13.52
Frequency [GHz]
S11
[dB
]
Microstrip S11
X: 2.381Y: -10.07
X: 2.436Y: -10.05
2.25 2.3 2.35 2.4 2.45 2.51.5
2
2.5
3
3.5
4
4.5
5
5.5
Frequency [GHz]
SW
R
Microstrip SWR
X: 2.4Y: 1.546
X: 2.396Y: 1.601
X: 2.419Y: 1.597
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Control System
Power Adapter DAC USB
Parallel Port Connection
Power SwitchMotor Cord
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Friis Transmission Equation
PTest= Power of Test Antenna PStandard= Power of Standard Gain Antenna GTest= Received Gain of Test Antenna GStandard= Received Gain of Standard Gain Antenna
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LabVIEW Gain Calibration Program
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LabVIEW Measurement Program
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Free Space Microstrip Measurement Results
Raw Data Normalized Data
HPBW= 113° - 58° = 55°
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Microstrip Chamber Measurement Results
Raw Data Normalized Data
HPBW= 119° - 58° = 61°
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Reflector Chamber Measurement Results
Raw Data
Normalized Data
HPBW= 98° - 82° = 16°
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Antenna Platform Initialization (Forward)
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Antenna Platform Initialization (Reverse)
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Future Work
Continue Testing System Ensure LabVIEW Positioning is exact Continue Improvement to GUI