Transducer with field emitter array
OwnerChristopher Mann, Syed Ejazul Huq +2inventors
InventorsChristopher Mann, Syed Ejazul Huq, Martyn Chamberlain, John Fletcher
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Abstract
A transducer suitable for generating signals in the terahertz region has a resonant cavity (4) with apertures (6) aligned with cold cathode source (2) being a field emitter array. The resonant cavity (4) consists of an inner cylindrical region (8) and an outer toroid region (9) that includes a slot antenna (11). To achieve signal generation in the terahertz region, the cavity (4) is fabricated using an etched polymeric material.
Claims16
A method of fabricating a transducer comprising the steps of:
- providing a field emitter array for generating a beam of electrons;
- constructing a hollow cavity having one or more first apertures in a wall of the hollow cavity and an output for electromagnetic radiation;
- and
- positioning the hollow cavity such that the one or more apertures intersect the beam of electrons from the field emitter array, the cavity having metallic walls constructed using a polymeric material that is etched to produce a former of the desired shape of at least part of the cavity.
A transducer comprising a field emitter array for providing a beam of electrons and a hollow cavity having one or more first apertures located so as to intersect the beam of electrons from the field emitter array and an output for electromagnetic radiation wherein the hollow cavity has metallic walls constructed about a removable former of etched polymeric material.
Dependencies are inferred from the claim text.