Beam steering
-
Upload
sai-roja -
Category
Engineering
-
view
66 -
download
0
Transcript of Beam steering
![Page 1: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/1.jpg)
Beam Steering Phased Array Antenna With Fully Printed Phase Shifters Based on Low Temperature
Sintered BST Composite Thick Films
Under the Guidance ofDr I. Govardhani
By A.Roja
152040011
![Page 2: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/2.jpg)
Introduction
• Antenna is a transducer which converts one form of energy into another form.
• From radio frequency to AC and vice versa.• Basic concepts of antenna includes:• Gain • Return loss• Directivity • VSWR
![Page 3: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/3.jpg)
Phased array antenna
• Phased Array Antenna consists of 3 sections a) Feeding Network b) Antenna Elements(micro strip antenna) c) Phase Shifters
![Page 4: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/4.jpg)
Layout of PAA
![Page 5: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/5.jpg)
Feeding Network
• It divides power equally to the branches to modify phase.
• Micro strip power divider is commonly used.• To distribute input signal to the antenna elements.
![Page 6: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/6.jpg)
Antenna Elements
• Antenna is operated at 3GHZ (S Band)• It consists of 3 conducting layers which is fabricated
on Substrate.• A Thick substrate is used to increase bandwidth of
antenna.
![Page 7: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/7.jpg)
Design analysis
• The array antenna consists of four antenna elements which is placed along axis on the thick substrate of 0.64cm.
• A feeding network is connected to all the four antenna elements which is used as power divider.
• The operating frequency is 7 GHZ.
![Page 8: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/8.jpg)
Simulation Results
![Page 9: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/9.jpg)
Gain (db)
![Page 10: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/10.jpg)
VSWR
![Page 11: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/11.jpg)
Radiation pattern
![Page 12: Beam steering](https://reader036.fdocuments.us/reader036/viewer/2022070518/58ebda261a28abcb048b46d9/html5/thumbnails/12.jpg)
References• [1] M. Nikfalazar et al., “Frequency extension of the fully printed phase
shifter by paste composite optimization,” in Proc. German Microw. Conf. (GeMiC), Mar. 2015, pp. 146–149.
• [2] M. Nikfalazar et al., “Fully inkjet-printed tunable s-band phase shifter On bst thick film,” in Proc. 44th Eur.Microw. Conf. (EuMC), Oct. 2014, pp. 504–507.
• [3] C. Kohler et al., “Effects of ZnO-B O addition on the microstructure And microwave properties of low-temperature sintered barium strontium Titanate (BST) thick films,” Int. J. Appl. Ceramic Technol., vol. 10, pp. 200–209, May 2013.