Some Novel Antennas Designed at AML, SDSU
Professor Satish K. SharmaDirector, Antenna and Microwave Lab (AML)
Department of Electrical and Computer Engineering Office Phone: 619-594-0241
Email: [email protected]://electrical.sdsu.edu/faculty/satish/index.html
mailto:[email protected]://electrical.sdsu.edu/faculty/satish/index.html
Some Funded Project Antennas
DF Antenna (100MHz to 1.3GHz) UHF Band RFID Reader Antenna
RFID Tag Antenna for Metallic Objects
Quasi-Log-Periodic Reconfigurable Antenna
Wideband Reconfigurable Antenna (3:1 Bandwidth)
Wideband Low Cross-Pol DRA
Compact Reconfigurable Dipole AntennaInk-jet Printed Flexible Antenna
Some Funded Project Antennas
Compact Folded Ring Resonator Antenna 4 Element MIMO Antenna
Fractal AntennaTriple mode patch antenna
4-element DRA Antenna
USB Dongle MIMO Antenna
Eleven band antenna Spiral Antenna
Frequency Agile Antenna with MIMO MIMO Antenna with Isolation Technique
MIMO AntennaReconfigurable MIMO Antenna
4 Elements MIMO Antenna for Tablet Size Ground
Beam Peak and Null Steering Antenna for GPS Receivers
Some Funded Project AntennasBroadband CP Antenna
Broadband CP Antenna on a Curved Surface
3D Printed Horn Antenna Massive MIMO 5G Comm Antenna
Multiple Radiating Modes Based Beam Steering Antenna
MCU
LNAVGA
PS
LNAVGA
PS
LNAVGA
PS
LNAVGA
PS
4:1
LNAVGA
PS
LNAVGA
PS
LNAVGA
PS
LNAVGA
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4:1
LNAVGA
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LNAVGA
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LNAVGA
PS
LNAVGA
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4:1
LNAVGA
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LNAVGA
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LNAVGA
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LNAVGA
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4:14:1
Serial bus
Power Supply
(9V, 0.5 A)
USB
RFout RFin
Active Feed Boards(amp/phase control)
Multiple ModeDipole Sub-ArraysFunctional Block
Diagram
N. Labadie, S. K. Sharma, and G. Rebeiz, “A Novel Approach to Beam Steering using Arrays Composed of Multiple Unique Radiating Modes”, IEEE Trans Antennas and Propagation, USA, Vol. 63, No. 7, July 2015, pp. 2932 - 2945
16-Element Active Dipole Array
• Fully assembled hybrid multiple mode phased array.
Mode AdjustAddress & Control Logic
Power Supplies
Main Conn.
Multiple Modes Based 2D Beam Steering Antenna
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• Fabricated prototype
• Additional layer needed to space SMA connectors
• Will use same C-band active feed boards developed for linear dipole array
• In practice, radiators and active/passive feed implemented on a single PCB
Measured 3D Radiation Patterns @ 4.6 GHz
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Θ=13°, φ =0°
θ=28°, φ =0° θ=50°, φ =0°
θ=0°, φ =0°
N. Labadie, S. K. Sharma, and G. Rebeiz, “Investigations on the use of Multiple Unique Radiating Modes for 2D BeamSteering”, IEEE Trans Antennas and Propagation, Vol. 64, No. 11, November 2016.
A Dual Band High Gain Resonant Cavity Antenna with A Single Layer Superstrate
A dual-band high gain Resonant Cavity Antenna (RCA) with single layersuperstrate is proposed.
Microstrip patch antenna with two T-shaped slots was used as feedsystem of RCA.
T-shaped slots was used to modify the high order mode of originalmicrostrip patch antenna to get directional pattern.
Substrate & superstrate (Arlon AD250A,thicknesses = 1.58mm, εr = 2.50 andtan δ = 0.0015)
Design Parameters:W = 15mm, L = 7.3mm, W1 = 0.4mm, W2 = 0.3mm,L1 = 5.5mm, L2 = 2.1mm, d = 1.95mm, X = 110mm,Y = 110mm.
F. Meng and S. K. Sharma, “A Dual-Band High Gain Resonant Cavity Antenna with A Single Layer Superstrate”, IEEE Trans Antennas and Propagation , May 2015
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Frequency(GHz)
Mag
nitu
de(d
B)
MeasurementSimulation
Low band High Band
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Angle(Degree)
Gai
n(dB
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Mea. Gainφ φ =0Mea. Gainφ φ =90Mea. Gainθ φ =0Mea. Gainθ φ =90Sim. Gainφ φ =0Sim. Gainφ φ =90Sim. Gainθ φ =0Sim. Gainθ φ =90
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Angle(Degree)
Gai
n(dB
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Mea. Gainφ φ =90Mea. Gainφ φ =0Mea. Gainθ φ =90Mea. Gainθ φ =0Sim. Gainφ φ =0Sim. Gainφ φ =90Sim. Gainθ φ =0Sim. Gainθ φ =90
A Dual Band High Gain Resonant Cavity Antenna with A Single Layer Superstrate
RCA yields around 16.5dBi and 20.9 dBi gain values at 7GHz and 13GHz, respectively. The RCA operated in dual-band with single polarization with frequency ratio of 1.93.
Frequency Tunable with Polarization Reconfigurable Antenna Frequency tunable with simultaneous polarization reconfigurable beam steering array antenna is being designed and developed for experimental verification.
(a) (b) (c)
(d) (e)
(f) (g)
B. Babakhani and S. K. Sharma, “Wideband Frequency Tunable Circular Microstrip Patch Antenna with Simultaneous Polarization Reconfiguration”, IEEE Antennas and Propagation Magazine, USA, April, 2015.
Simultaneous frequency agile and polarization reconfigurable Phased Array Antenna
Behrouz Babakhani, and S. K. Sharma, “A Frequency Agile Microstrip Patch Phased Array Antenna with Polarization Reconfiguration”, IEEE Trans Antennas and Propagation, Vol. 74, No. 10, October 2016
Handbook of Reflector Antennas and Feed Systems Volume 1: Theory and Design of ReflectorsSatish K. Sharma, Sudhakar Rao, and Lotfollah Shafai, EditorsCopyright: 2013Pages: Approx 350ISBN: 978-1-60807-515-7
Handbook of Reflector Antennas and Feed Systems Volume 2: Feed SystemsLotfollah Shafai, Satish K. Sharma, and Sudhakar Rao, EditorsCopyright: 2013Pages: Approx 450ISBN: 978-1-60807-517-1
Handbook of Reflector Antennas and Feed Systems Volume 3: Applications of ReflectorsSudhakar Rao, Lotfollah Shafai and Satish K. Sharma, EditorsCopyright: 2013Pages: Approx 450ISBN: 978-1-60807-519-5
Some Novel Antennas Designed at AML, SDSUSlide Number 2Slide Number 3Slide Number 4Slide Number 5Multiple Radiating Modes Based Beam Steering Antenna16-Element Active Dipole ArrayMultiple Modes Based 2D Beam Steering Antenna Measured 3D Radiation Patterns @ 4.6 GHzSlide Number 10Slide Number 11Frequency Tunable with Polarization Reconfigurable Antenna Slide Number 13Slide Number 14
