Ferroelectric radiation detector employing frequency modulated readout
First Claim
1. A method for constructing a resonant frequency electromagnetic radiation detector comprising the following steps:
- providing a planer ground plane;
placing a dielectric layer on said planer ground plane;
placing a metal microstrip transmission line on said dielectric strip;
building up a mesa formed of dielectric material on said dielectric layer;
forming a ferroelectric ring on top of said mesa; and
placing a radiation absorbing layer on top of said ferroelectric ring.
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Accused Products
Abstract
A detector for electromagnetic radiation such as millimeter wave and infrared employs a ring-shaped ferroelectric element having a temperature affected by an absorber for the radiation. The dielectric constant of the ferroelectric material is a strong function of the temperature near its Curie temperature. The resonant frequency of the ferroelectric element is detected by applying a swept-frequency signal to the circuit and detecting the frequency which enhances the energy of the pulse. A two-dimensional camera for the radiation employs a two-dimensional array of these ferroelectric resonant circuits and a system for rapidly interrogating their resonant frequencies on a sequential basis.
28 Citations
7 Claims
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1. A method for constructing a resonant frequency electromagnetic radiation detector comprising the following steps:
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providing a planer ground plane; placing a dielectric layer on said planer ground plane; placing a metal microstrip transmission line on said dielectric strip; building up a mesa formed of dielectric material on said dielectric layer; forming a ferroelectric ring on top of said mesa; and placing a radiation absorbing layer on top of said ferroelectric ring. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification