frequency reconfigurable microstrip patch antenna
DESCRIPTION
Frequency Reconfigurable Microstrip Patch Antenna. Final Project Presentation. Presented by: Mike Bly, Josh Rohman Advisor: Dr. Prasad N. Shastry. Why Reconfigurable Antennas? Practical Applications?. Presentation Outline. Design Specifications MEMS Switch Implementation - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/1.jpg)
Frequency Reconfigurable Microstrip Patch Antenna
Final Project Presentation
Presented by: Mike Bly, Josh Rohman
Advisor: Dr. Prasad N. Shastry
![Page 2: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/2.jpg)
Why Reconfigurable Antennas?Why Reconfigurable Antennas?
Practical Applications?Practical Applications?
![Page 3: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/3.jpg)
Presentation Outline•Design Specifications•MEMS Switch Implementation•Linear Patch Antenna Design•Antenna Simulations•Inset Feed Matching Network
![Page 4: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/4.jpg)
Design Specifications•Microstrip patch antenna (Rogers RO3010)•2 GPS application frequencies
24 MHz Bandwidth1.575 GHz Center Frequency (Patch 1)1.227 GHz Center Frequency (Patch 2)Linear Polarization
•Inset Feed matching networkMatched to 50Ω
•MEMS preferred for switching method
![Page 5: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/5.jpg)
System Block Diagram
Switches?
Patch 1(1.575 GHz)
Patch 2 Connected
(1.227 GHz)
Inset Feed Matches to 50
ohm
Output to Coax Connector
On
Off
![Page 6: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/6.jpg)
Switching Method•MEMS Switch
RMSW201, RADANT MEMS0.3dB Insertion Loss @ 2GHz35dB Isolation Loss @ 2GHz1.9mm x 1.85mm package size
![Page 7: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/7.jpg)
RMSW201 MEMS Operation•+/- 90 VGS Actuation Voltage
![Page 8: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/8.jpg)
RMSW201 MEMS Operation•+/- 90 VGS Actuation Voltage
![Page 9: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/9.jpg)
Implementing MEMS•RS = RD = 100kΩ•Stability
![Page 10: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/10.jpg)
Switching Method
+5V Supply Line
DC-DC Converter MEMS Gate
![Page 11: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/11.jpg)
Switching Method•DC-DC Converter: +5V to -90V• R2/R1 = Vout/Vref• R2 = Vout/10uA
+5VDC
-90VDC
![Page 12: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/12.jpg)
Switching Method•DC-DC Converter: +5V to -90V
+5VDC
-90VDC
![Page 13: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/13.jpg)
Switching Method•DC-DC Converter: +5V to -90V
+5VDC
-90VDC
![Page 14: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/14.jpg)
Switching Method•DC-DC Converter: +5V to -90V
+5VDC
-90VDC
![Page 15: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/15.jpg)
DC-DC Converter Timing
![Page 16: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/16.jpg)
Implementing MEMS•Conductive epoxy, double-stick thermal
tape•Wire bonding, gold plating
![Page 17: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/17.jpg)
MEMS Evaluation Board
![Page 18: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/18.jpg)
MEMS Evaluation Board
![Page 19: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/19.jpg)
MEMS Evaluation Board
![Page 20: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/20.jpg)
MEMS Evaluation Board
![Page 21: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/21.jpg)
MEMS Evaluation Board
![Page 23: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/23.jpg)
Patch Antenna Design Step 1
L = 30mm & W = 40.25mm L = 38.6mm & W = 40.25mm
ΔL = 0.412h*[(εeff + 0.3)(W/h + 0.264)]/[( εeff – 0.258)(W/h + 0.8)]W = c/(2fo*√((εr+1)/2))L = c/(2fo*√(εr)) – 2ΔL
![Page 24: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/24.jpg)
Patch Antenna Design Step 2
L = 30mm & W = 40.25mm
<-Height = 1mm
![Page 25: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/25.jpg)
Patch Antenna Design Step 3
L1 = 30mm & W = 40.25mm
Height = 1.9mmHeight = 1mm
![Page 26: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/26.jpg)
1.575 GHz Patch Antenna Design
![Page 27: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/27.jpg)
Simulations: 1.575 GHz Patch Antenna
![Page 28: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/28.jpg)
Simulations: 1.575 GHz Patch Antenna•1 to 2 GHz Simulation
![Page 29: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/29.jpg)
1.575 GHz Results
![Page 30: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/30.jpg)
1.227 GHz Patch Antenna Design
![Page 31: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/31.jpg)
Simulations: 1.227 GHz Patch Antenna
![Page 32: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/32.jpg)
Simulations: 1.227 GHz Patch Antenna•1 to 2 GHz Simulation
![Page 33: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/33.jpg)
1.227 GHz Results
![Page 34: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/34.jpg)
Inset Feed Matching Network
INSET FEED
Freq Length(mm) Width(mm) Er Ereff Zo
1.227 34.06 40.25 10.2 9.818024134 47.16779462
1.575 30 40.25 10.2 9.818024134 67.47522359
Zin(real) Zin(imag) Wo(mm) Yo(mm) Pi
135.902 -14.159 0.59567 10.2 3.14159
290.732 -28.368 0.59567 10.2 3.14159
![Page 35: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/35.jpg)
Inset Feed Design Step 1
y0 = [Cos-1(Z0/Zin)]2*(L/π)W0 = 0.6mm (50Ω microstrip line)W1 = W0
![Page 36: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/36.jpg)
Inset Feed Design Step 2
L = 30mm & W = 40.25mm & y0 = 10.25mm
Height = 1mm
![Page 37: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/37.jpg)
Inset Feed 1.575Ghz Simulation
![Page 38: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/38.jpg)
Simulations: 1.575 GHz Inset
![Page 39: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/39.jpg)
1.575 GHz Inset Results
![Page 40: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/40.jpg)
Inset Feed 1.227Ghz Simulation
![Page 41: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/41.jpg)
Simulations: 1.227 GHz Inset
![Page 42: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/42.jpg)
1.227 GHz Inset Results
![Page 43: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/43.jpg)
Antenna System Layout
![Page 44: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/44.jpg)
Fabricated Antenna System
![Page 45: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/45.jpg)
Questions?
![Page 46: Frequency Reconfigurable Microstrip Patch Antenna](https://reader033.vdocuments.site/reader033/viewer/2022061617/56815e6a550346895dcce782/html5/thumbnails/46.jpg)
Sources:• Application Note for MAX774 DC-to-DC Converter. RadantMEMS, 2007. Web. Nov. 2011.
<http://www.radantmems.com/radantmems.data/Library/MAX774%20DC-DC%20Converter_1.2.pdf>.
• Application Note for Test & Handling of SPST RF-MEMS Switches. RadantMEMS, 2007. Web. Nov. 2011. <http://www.radantmems.com/radantmems.data/Library/App_notes_1.6.pdf>.
• Balanis, Constantine A. Antenna Theory: Analysis and Design. 3rd ed. Hoboken, NJ: John Wiley, 2005. Print.
• DeSignor, Jessica A., and Jayanti Venkataraman. "Reconfigurable Dual Frequency Microstrip Patch Antenna Using RF MEMS Switches." IEEE Xplore. May 2007. Web. 20 Sept. 2011.
• Rebeiz, Gabriel M., and Jeremy B. Muldavin. "RF MEMS Switches and Switch Circuits." IEEE Xplore. Dec. 2001. Web. 20 Sept. 2011.
• SPST, High-Isolation, RF-MEMS Switch DC to 20 GHz. RadantMEMS, 2007. Web. 28 Oct. 2011. <http://www.radantmems.com/radantmems.data/Library/Radant-
Datasheet201_1.4.pdf>.• Yang, Songnan, Chunna Zhang, Helen K. Pan, Aly E. Fathy, and Vijay K. Nair. "Frequency
Reconfigurable Antennas for Multiradio Wireless Platforms." IEEE Microwave Magazine (2009): 67-84. Print.