| EPSRC Reference: |
GR/K03760/01 |
| Title: |
NEW CONFIGURATIONS FOR PLANAR ACTIVE ANTENNNAS |
| Principal Investigator: |
Hall, Professor PS |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Electronic, Electrical and Computer Eng |
| Organisation: |
University of Birmingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
27 October 1994 |
Ends: |
26 November 1997 |
Value (£): |
195,330
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| EPSRC Research Topic Classifications: |
| RF & Microwave Technology |
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| EPSRC Industrial Sector Classifications: |
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| Panel History: |
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Summary on Grant Application Form |
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1. To produce an integrated microwave transmit/receive antenna module, initially compatible with planar hybrid technology, with the final goal of monolithic integration. 2. Investigate improved spectral control of such active antenna modules with regard to harmonic radiation and reception and oscillator instability. 3. Combine the integrated antenna modules with array concepts to produce electronically steerable active arrays. Progress:A literature survey on planar active antennas has been undertaken. Initially concentrating upon micro-strip hybrid technology, where FET oscillators are integrated on to a patch antenna to form voltage controlled patch oscillators. Techniques for obtaining isolation between transmit and receive functions are also being investigated. Injection locking of patch oscillators has been experimentally investigated. This technique allows large radiated phase shifts to be obtained which can be used in beam steering applications. Phase shifts of greater than 360 at 4GHz have been obtained. These results have been published at an IEE colloquium1.The transmission line model for patch antenna analysis has been implemented using HP-MDS, this allows incorporation of active elements into the patch design, enabling patch oscillators to be designed and analysed.An FDTD program for patch analysis, written in-house, is being verified against measured results and other published work. The incorporation of active elements into the FDTD grid in order to analyse transmit/receive antennas is being investigated.A measurement program has been initiated with the design of a number of square and rectangular micro strip patch antennas. The square patches will allow the use of same frequency/cross-polarisation techniques for integrating the transmit and receive functions 1 Beamforming in Quasi-Optic active arrays using sub-harmonic locking technique IEE Colloquium on Novel techniques for Antenna Beam Generation January 1995
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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.bham.ac.uk |