| EPSRC Reference: |
GR/H73967/01 |
| Title: |
HETEROJUNCTION BIPOLAR TRANSISTOR SELF OSCILLATING DETECTOR |
| Principal Investigator: |
Stewart, Professor J |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Sch of Electronics, Elec Eng & Comp Sci |
| Organisation: |
Queen's University of Belfast |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 November 1992 |
Ends: |
31 July 1996 |
Value (£): |
71,265
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| EPSRC Research Topic Classifications: |
| Electronic Devices & Subsys. |
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Summary on Grant Application Form |
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An investigation into the use of Heterojunction Bipolar Transistors as Self-Oscillating Detectors and the implementation of the circuit as a MMIC. This is to be carried out by creating an accurate large-signal model for the HBT and using this model for oscillator design and the subsequent design of HBT self-oscillating detectors. Progress:Multi-bias circuit-based small-signal models using both a Hybrid-PI and a T topology have been generated and work is on-going to extend both these models to large-signal operation. A function to describe Ic has been developed for the hybrid-pi model and it is this model which is currently being extended to describe the large-signal characteristics of the device. In parallel, for comparative purposes, a SPICE type Gummel-Poon large signal model has been generated in MDS. GEC Marconi Materials Technology, Towcaster (GMMT) have materially assisted the project by making HBT devices available. Once the circuit-based large-signal model has been verified it will be used to investigate the properties of HBTs with respect to self-oscillating detector circuits and their subsequent implementation in MMIC form.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.qub.ac.uk |