distributed voltage controlled oscillator
DESCRIPTION
Distributed Voltage Controlled Oscillator. Team Members: Dane StiversTodd Beyer Tim MacShaneMonica Studnicki Advisor: Dr. Prasad N. Shastry Funded By: Electrical Engineering Dept.. Bradley University Peoria, IL, 61625. Outline of Presentation. Project Summary Previous Work Done - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/1.jpg)
Distributed Voltage Controlled Oscillator
Team Members:Dane Stivers Todd Beyer
Tim MacShane Monica Studnicki
Advisor:Dr. Prasad N. Shastry
Funded By:Electrical Engineering Dept..
Bradley University
Peoria, IL, 61625
![Page 2: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/2.jpg)
Outline of Presentation
• Project Summary• Previous Work Done• Standards Applicable• Top Level Design• Functional Description• Division of Labor• Image of Tunable Bandpass Filter• Image of Distributed Amplifier• Specifications• Components List• Equipment List• Facilities Used• Software Used• Proposed Schedule
![Page 3: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/3.jpg)
Project Summary
• Oscillators are one of the important components in communication systems. They establish transmitter carrier frequency, and drive frequency converters. There are several types of oscillators that are used in commercial and military systems. VCO’s that are tunable to one octave frequency range are available commercially.
• It is well known that a distributed amplifier provides very wide bandwidth and high gain. Our design of a VCO will incorporate the distributed amplifier in order to allow a tunable frequency of close to one decade frequency (limited by the transistors). This design approach has never been successfully implemented before.
![Page 4: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/4.jpg)
Previous Work Done
• Patents Held:– None Found
• Masters Thesis Work:– Sunil Modur Nagabhushana
• Graduate Level Work:– Yongqiang He
![Page 5: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/5.jpg)
Standards Applicable
• ISM frequency band:– Defined by FCC for general unregulated use:
• CFR 47 Part 2 -Frequency Allocations
• Standards and Procedures for Microstrip layout and Fabrication:– Variable based upon the fabrication facility
• Safety– General usage as per ISM band regulations
![Page 6: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/6.jpg)
Top Level Design
Tunable Bandpass Filter
Amplifier
Power Divider
Distributed Amplifier
DC Bias
DC Bias
VCO Output
Tuning Voltage
![Page 7: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/7.jpg)
Functional Description
Subsystem Inputs From Output To
Tunable BandpassFilter
Tuning VoltageAmplifier
Distributed Amplifier
Distributed Amplifier DC BiasBandpass Filter
Power Divider
Power Divider Distributed Amplifier AmplifierOverall System Output
Amplifier DC BiasPower Divider
Tunable Bandpass Filter
![Page 8: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/8.jpg)
Division of Labor
Dane Stivers and
Monica Studnicki
• Distributed Amplifier
• Power Divider
Todd Beyer and
Tim MacShane
• Tunable Bandpass Filter
• Amplifier
![Page 9: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/9.jpg)
![Page 10: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/10.jpg)
![Page 11: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/11.jpg)
Specifications
• Output Frequency Range: 1 to 3 GHz– Design to be tested by operation within the ISM (Industrial,
Scientific, Medical) band
• Output Power: Stable over whole frequency range
• Output Impedance 50• Tuning Voltage: 0 to 20 V
• Biasing Voltage: 15 V DC
![Page 12: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/12.jpg)
Components List
(10 – 12) Discrete Transistors w/ a similar non-linear model as the NE76084S.
Power Divider (PS-2-4000F Wide Band Two Way Combiner/Divider). (20) Coilcraft 22nH Inductors (0603CS-22NX-BC). (8-12) Dielectric Laboratories 2400pF DC Blocking Capacitors. (4) Varactor Diode that has similar operating limits as the MA 46457-
186 (4) Broadband Amplifier (EIC-1019 Broadband Amplifier) (4) High Frequency Circuit Boards
RO3003 and TMM10i
(12-20) Microstrip Board to Coax Connectors (50 ) (5) Microstrip Box Mount Coax Connectors (50 ) Metal Casing for Final Design
![Page 13: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/13.jpg)
Equipment List
Spectrum Analyzer Network Analyzer Soldering Iron Voltage Sources
![Page 14: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/14.jpg)
Facilities Used
– The Prototype and Subsystems will be fabricated by us using the fabrication lab on campus.
– Bradley University’s machine shop will be utilized for the making if the metal box that the final design will go into.
– Also, the final design will be sent outside to a manufacturer (to be determined) to be professionally made.
![Page 15: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/15.jpg)
Software Usage
HP ADS Mstrip MATCH CAMAD
![Page 16: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/16.jpg)
Proposed Schedule
• Week 1:– Verify Receipt of Components– Continue Simulations
• Week 2:– Verify Components– Continue Simulations
• Week 3:– Complete Verification of Components– Start Construction of Subsystems
• Weeks 4-9:– Continued Construction of Subsystems– Test Subsystems– Test Interconnected Functionality
![Page 17: Distributed Voltage Controlled Oscillator](https://reader035.vdocuments.us/reader035/viewer/2022071716/56812f3b550346895d94d05e/html5/thumbnails/17.jpg)
Proposed Schedule (Continued)
• Week 10:– Construct Prototype
• Week 11:– Test Prototype
• Weeks 12-14:– Trouble Shooting
– Preparation for Expo
– Preparation of Final Report