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University: University of St Andrews
Sector(s): Electronics, Sensors & Photonics
About Opportunity:
Generating fast radiofrequency pulses is difficult. Traditional pulse generators employ either diode switches in the signal path, or rely on varying the gain of an amplifier stage, i.e. traditional amplitude modulators. The pulse rise time and width are limited by the intrinsic bandwidth of the port controlling the modulating element, and switch element time constants. The new methodology employs types of multipliers as switches which may have intrinsic bandwidths of many Gigahertz and because they are designed to be high frequency components have very small internal capacitances. The non-linearity inherent in the multiplication process will “speed up” the pulse edges giving some additional pulse width compression. A rectangular pulse of <700ps duration with a peak power of +23dBm, and a non-rectangular pulse of the same amplitude and <300ps duration have been generated. Both these pulses had a 1:1 mark space ratio.
Key Benefits:
Enables the generation of sub-nanosecond pulses in any frequency generation.Does not use standard switching techniques.High intrinsic bandwidth gives fast pulses.Technique “speeds-up” edges of pulse.
Applications:
Military and Civil Radar equipment.Scientific instrumentation e.g. Electron Spin Resonance (ESR), Nuclear Magnetic Resonance (NMR) and Mass Spectrometry equipment.Telecommunications e.g. Digital Broadcast Communications equipment.Anywhere (such as the above examples) a fast radiofrequency (RF) pulse may be required.
IP Status:
The University of St Andrews has applied for UK patent protection and the research group involved continues to perform Research & Development in high speed pulse generation and millimetre wave science. There are no commercial parties involved in this research and the University would welcome enquiries from commercial parties interested in developing commercial applications involving high speed radiofrequency (RF) pulse generation.Additional Information will be made available under a Confidentiality Agreement.Patent Number: UK Application Number 0421178.5
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