Ultra Wideband (UWB) Antenna Progress Report January/February. By: Ross Stange Advisor: Dr. Prasad Shastry Bradley University
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1 Ultra Wideband (UWB) Antenna Progress Report January/February By: Ross Stange Advisor: Dr. Prasad Shastry Bradley University
2 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Information Received from Cunningham Graphics Revised Tentative Schedule and Progress
3 An antenna is a transducer between a guided wave propagating in a transmission line, and an electromagnetic wave propagating in an unbounded medium, like air. All antennas are both transmitting and receiving antennas. Car antenna mainly in receiving mode Intro to Antennas
4 Intro to UWB UWB is defined as a system having a bandwidth greater than 500 megahertz (MHz). UWB signals are pulse-based waveforms compressed in time, instead of sinusoidal waveforms compressed in frequency.
5 Intro to UWB (cont.)
6 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Information Received from Cunningham Graphics Revised Tentative Schedule and Progress
7 Updated Block Diagram Transmitter (Signal Generator) Receiver (spectrum analyzer) Coaxial Connector Coaxial Connector Radiating Part Coplanar Waveguide Air Coplanar Waveguide
8 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Information Received from Cunningham Graphics Revised Tentative Schedule and Progress
9 Reference Antenna Picture of a Monopole Antenna [Left = Final (Optimized) Result] [Right = Initial Set-Up Final Values: θ = 63 B = 16 mm A = 15 mm
10 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Com Lab) Labs Simulations and Layouts Updated Equipment List New Information Received from Cunningham Graphics Revised Tentative Schedule and Progress
11 Changes to be Made to Reference Antenna Reference Antenna to be designed first θ = 63 (Original Value) Will be changed to 0, 30, 45, and 75. Change shape of Coplanar Waveguide Trapezoidal (Angle = 90 - θ) Test Coplanar Waveguide by itself At 0, 30, 45, 63, and 75 Angle Angle θ
12 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Information Received from Cunningham Graphics Revised Tentative Schedule and Progress
13 EE 409 (RF Comm Lab) Labs Network Analyzer ADS Lab Antenna Measurements (Not Finished!) Microstrip LPF Fabrication and Measurements (Not Finished!)
14 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Info from Cunningham Graphics Revised Tentative Schedule and Progress
15 Simulation and Layouts Coplanar Waveguide
16 Fri Feb Dataset: cpwg_mom_a 0 S11 0 S Simulation Mag. [db] Mag. [db] and Layouts Frequency Frequency 0 S12 0 S21 Mag. [db] Mag. [db] Frequency Frequency 200 S S22 Phase [deg] Phase [deg] Frequency Frequency
17 200 S S21 Phase [deg] Phase [deg] Simulation and Frequency Frequency S11 S22 Layouts Simulations have bad data. Need to re-simulate freq (3.100GHz to 10.60GHz) freq (3.100GHz to 10.60GHz) S12 S21 freq (3.100GHz to 10.60GHz) freq (3.100GHz to 10.60GHz)
18 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Info from Cunningham Graphics Revised Tentative Schedule and Progress
19 Equipment List Network analyzer - HP8722C or HP8410C Spectrum analyzer - HP8593E or HP8559A Signal generator - HPE4433B (May be used) Agilent Advanced Design System - ADS Sonnet (Not Going to be Used! Time Constraint) Anechoic Chamber Agilent VEE pro (Not Going to be Used!) Pulse Generator HP8011A (New! Possibility the Signal Generator)
20 Some Pictures of Equipment Spectrum Analyzer Anechoic Chamber
21 Some Pictures of Equipment Signal Generator
22 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Info from Cunningham Graphics Revised Tentative Schedule and Progress
23 New Info from Cunningham Graphics Printed Circuit Board 31 mil thickness 1 Oz. Copper thickness [Will increase due to electroplatting which was necessary due to via holes (plattedthrough holes)] Where antennas will be fabricated (with via holes) Via holes are used to connect the ground plate to upper conductor plate so it wouldn t create a T-line Via Hole
24 New Info from Cunningham Graphics Telephone Conference with Bob Modica Possible Problem because of glass fiber amount - Each Company uses a different amount of glass fiber and epoxy - Just because the printed circuit board is a FR-4, does not mean it is exactly the same - Loss, dielectric constant can change
25 New Info from Cunningham Graphics From Cunningham Graphics, actual specs: FR-4 Printed Circuit Board will have a 30 mil core, 4.6 dielectric constant, copper plating of 2.6 mil, 100 micro-inches of electroless nickel, 3-5 micro-inches of immersion gold Fabrication Process 2 weeks Fit antennas on one sheet
26 Outline of Presentation Summary on Antennas and UWB - Introduction to Antennas - Introduction to UWB Updated Block Diagram Picture of Reference Antenna Changes to be Made to Reference Antenna EE 409 (RF Comm Lab) Labs Simulations and Layouts Updated Equipment List New Info from Cunningham Graphics Revised Tentative Schedule and Progress
27 Tentative Schedule Schedule for UWB Antenna Senior Project Week Date Objective % of Project Completion Pre-work 14-Jan-08 to 18-Jan-08 Network Analyzer Lab (EE 409 Lab) 5.00% 100% Obtain Reference Paper and Learn about Signal 1 24-Jan-08 Generator 5.00% 100% 2 31-Jan-08 Learn about Signal Generator 4.00% 100% 3 7-Feb-08 ADS Lab (EE 409 Lab) 5.00% 100% 4 14-Feb-08 ADS Lab (EE 409 Lab) 5.00% 100% 5 21-Feb-08 Design and Simulate Coplanar Waveguide in ADS 5.00% 20% Give Monthly Presentation and Build Many Antennas 6 28-Feb-08 on a Microstrip 5.00% 0% 7 6-Mar-08 Build Many Antennas on a Microstrip 5.00% 0% Build Antennas and Send Antennas Out to Fabricated 8 13-Mar-08 and Do Antenna Testing Lab (EE 409 Lab) 5.00% 0% 9 20-Mar-08 Spring Break 1.00% 0% Mar-08 Testing and Recording (Anechoic Chamber) 7.50% 0% 11 3-Apr-08 Testing and Recording (Anechoic Chamber) 7.50% 0% Apr-08 Possible Design Changes 5.00% 0% Apr-08 Send Design Changes to be Fabricated 7.50% 0% Apr-08 Testing and Recording (Anechoic Chamber) 7.50% 0% 15 1-May-08 Final Report and Presentation 10.00% 0% 16 8-May-08 Final Report and Presentation 10.00% 0% 16 8-May-08 Project 100% Completed % 25%
28 Special Thanks Special thanks to Bob Modica(Cunningham) Suresh(Validus) and Bala(Validus) Divya(Grad Student)
29 Questions? I m sorry; you did not answer in the form of a question.
Ultra Wideband Antenna Senior Project. By: Ross Stange Advisor: Dr. Prasad Shastry Bradley University
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