Millimeter wave fin-line gas discharge receiver protector

A millimeter wave, fin-line, radar receiver protector, operable to protect a radar receiver from received incident radio frequency signals, comprising:

• first and a second metal flanged rectangular housing portions, said first and said second metal flanged rectangular housing portions being operable to form a hermetically sealed, rectangular housing comprising four sides and a first and a second end;
• a radioactive primer means, said radioactive primer means fixedly mounted to at least one of said four sides within said rectangular housing formed by said first and said second metal flanged rectangular housing portions, said radioactive primer being operable to emit free electrons within said hermetically sealed, rectangular housing;
• an inert discharge gas, said inert discharge gas being fully contained within said hermetically sealed, rectangular housing, said inert discharge gas operable to be excited by said free electrons emitted within said hermetically sealed, rectangular housing from said radioactive primer, and said received incident radio frequency signals;
• a pinch-off exhaust tube, said pinch-off exhaust tube being fixedly mounted through at least one side of said four sides of said rectangular housing, said pinch-off exhaust tube being operable to evacuate and fill said hermetically sealed, rectangular housing with said inert discharge gas;
• first and second dielectric windows, said first and said second dielectric windows being fixedly mounted at said first and said second ends, respectively within said hermetically sealed, rectangular housing, said first and said second dielectric windows being operable to receive said incident, radio frequency signals, and transmit said signals as radio frequency, output signals through said millimeter wave, fin-line, radar receiver protector;
• first and second window flanges, said first and said second window flanges being fixedly mounted at said first and said second ends, respectively, of said hermetically sealed, rectangular housing, said first window and said second window flanges being fixedly mounted to said first and said second metal flanged rectangular housing portions, by a window flange connecting means;
• and
• first and second bevelled, fin-line tapered fins mounted within said housing, said first fin mounted onto one of said sides of said housing and said second fin mounted to another of said sides of said housing, said first fin and said second fin are parallel and directly opposed to one another within said hermetically sealed, rectangular housing, further said first and said second bevelled, fin-line tapered fins forming between them a discharge gap, said discharge gap being operable to facilitate a spontaneous gas discharge across said discharge gap when said incident radio frequency signals excite said free electrons emitted by said radioactive primer, said free electrons energizing said inert gas to a level of spontaneous discharge wherein said incident, radio frequency signals are attenuated.

A millimeter wave, fin-line, radar receiver protector, comprising:

• a rectangular housing, said rectangular housing having four sides and a first and a second open end;
• first and second hermetically sealed, dielectric rectangular chambers, said first and said second hermetically sealed dielectric rectangular chambers being mounted within said rectangular housing, proximate one another, said first and said second hermetically sealed dielectric rectangular chambers having four sides and first and second ends, said first and said second hermetically sealed, dielectric rectangular chambers touching at one of said four sides;
• first and second radioactive primers, said first and said second radioactive primers being layered within said first and said second hermetically sealed, dielectric rectangular chambers respectively, said first and said second radioactive primers being operable to emit free electrons within said first and said second hermetically sealed, dielectric rectangular chambers;
• a discharge gas, said discharge gas being fully contained within said first and said second hermetically sealed, dielectric rectangular chambers, said discharge gas operable to be excited by said free electrons emitted within said first and said second hermetically sealed, dielectric rectangular chambers from said first and said second radioactive primers, and said received incident radio frequency signals;
• and
• first and second bevelled, fin-line tapered fins mounted within said rectangular housing, said first and said second bevelled, fin-line tapered fins being layered between said first and said second hermetically sealed, dielectric chambers at said one of said four sides where said first and said second hermetically sealed, dielectric chambers, are proximate, said first fin and said second fin are parallel and directly opposed to one another within said rectangular housing, further said first and said second bevelled, fin-line tapered fins forming between them a discharge gap, said discharge gap being operable to facilitate a spontaneous gas discharge across said discharge gap when said received incident radio frequency signals enters said millimeter wave, fin-line, radar receiver protector, exciting said free electrons emitted by said first and said second radioactive primer, said free electrons energizing said discharge gas to a level of spontaneous discharge wherein said received, incident radio frequency signals are attenuated.

A single stage, narrow band, fin-line, radar receiver protector, comprising:

• an airtight rectangular housing, said housing having four sides and a first and a second end;
• first and second dielectric windows, said first and said second dielectric windows being mounted at said first and said second ends, respectively within said airtight, rectangular housing, said first and said second dielectric windows being operable to receive and transmit incident radio frequency signals as output signals through said single stage, narrow band, fin-line, radar receiver protector;
• a radioactive primer, said radioactive primer mounted within said rectangular housing, said radioactive primer being operable to emit free electrons within said airtight, rectangular housing;
• an inert, discharge gas, said inert, discharge gas being fully contained within said hermetically sealed, rectangular housing, said inert, discharge gas operable to be excited by said free electrons emitted within said hermetically sealed, rectangular housing from said radioactive primer, and said incident radio frequency signals;
• and
• a fin-line tapered, planar fin, said tapered, planar fin having a fin-line resonator, and a tuning element means cut into said fin, said tuning element and said fin-line resonator forming a discharge gap between said fin-line resonator and said tuning element, said fin-line tapered, planar fin mounted within said airtight, rectangular housing, further said discharge gap being operable to facilitate a spontaneous gas discharge across said discharge gap at a lower firing threshold when said incident, radio frequency signal enters said single stage, narrow band, fin-line radar receiver protector, exciting said free electrons emitted by said radioactive primer, said free electrons energizing said discharge gas to a level of spontaneous discharge across said discharge gap wherein said received, incident radio frequency signals are attenuated.

A multi-stage, narrow band, fin-line, radar receiver protector, comprising:

• a hermetically sealed, rectangular housing, said rectangular housing having four sides and a first and a second end;
• first and second dielectric windows, said first and said second dielectric windows being mounted at said first and said second ends, respectively within said hermetically sealed, rectangular housing, said first and said second dielectric windows being operable to receive and transmit incident radio frequency, signals through said multi-stage, narrow band, fin-line, radar receiver protector;
• a radioactive primer, said radioactive primer mounted within said rectangular housing, said radioactive primer being operable to emit free electrons within said hermetically sealed, rectangular housing;
• an inert discharge gas, said inert discharge gas being fully contained within said hermetically sealed, rectangular housing, said inert discharge gas operable to be excited by said free electrons emitted within said hermetically sealed, rectangular housing from said radioactive primer, and said incident radio frequency signals;
• and
• a planar fin-line tapered, fin, said planar tapered, fin being mounted within said hermetically sealed, rectangular housing, further said planar fin-line tapered, fin having a multiplicity of fin-line resonators of various sizes, and a multiplicity of tuning elements means of various sizes for each of said fin-line resonators, said multiplicity of fin-line resonators and corresponding multiplicity of tuning elements means being spaced apart on said planar tapered fin, one quarter wavelength apart, said multiplicity of fin-line resonators and said multiplicity of tuning element means forming a corresponding multiplicity of discharge gaps, further said discharge gaps being operable to facilitate a series of spontaneous gas discharges across said discharge gaps at different firing thresholds said incident radio frequency signals entering said multi-stage, narrow band, fin-line radar receiver protector, exciting said free electrons emitted by said radioactive primer, said free electrons energizing said discharge gas to a level of spontaneous discharge wherein said incident radio frequency signals are attenuated at a multiplicity of firing thresholds.

A single stage, narrow band, fin-line radar receiver protector, comprising:

• a rectangular housing, said rectangular housing having four sides and a first and a second open end;
• a dielectric substrate, said dielectric substrate mounted within said rectangular housing;
• first and second tapered, bevelled fins, said first and said second tapered, bevelled fins mounted upon said dielectric substrate such that said first and said second tapered, bevelled fins are parallel and opposed to each other upon said dielectric substrate;
• a circular iris, said circular iris being cut within said dielectric substrate perpendicular to said first and said second tapered, bevelled fins, further said circular iris and said first and said second tapered, bevelled fins forming a discharge gap;
• a hermetically sealed, dielectric tube, said hermetically sealed, dielectric tube interfitting through said circular iris proximate said discharge gap;
• a radioactive primer, said radioactive primer layered within said hermetically sealed, dielectric tube proximate said first and said second tapered, bevelled fins, said radioactive primer operable to emit free electrons during said radar receiver protector operation;
• and
• a discharge gas, said discharge gas being contained within said hermetically sealed, dielectric tube, said discharge gas operable to be excited by said free electrons, whereby said discharge gap facilitates a spontaneous gas discharge within said hermetically sealed dielectric tube across said discharge gap when said incident radio frequency signals excite said free electrons emitted by said radioactive primer, said free electrons energizing said discharge gas to a level of spontaneous discharge wherein said incident radio frequency input signals are attenuated.

A single stage, S-band, fin-line radar receiver protector, comprising:

• a metallized top layer, said metallized top layer having an iris cut within said top layer, said iris forming a discharge gap;
• an alumina substrate layer, said alumina substrate layer bonded to the underside of said metallized top layer, said alumina substrate layer having an iris cut within said substrate layer;
• a hermetically sealed dielectric tube, said hermetically sealed dielectric tube slideably interfitting within said iris within said metallized top layer and said iris cut within said alumina substrate layer;
• a discharge gas, said discharge gas contained within said hermetically sealed dielectric tube, said discharge gas comprising discharge gas molecules;
• a radioactive primer, said radioactive primer contained within said hermetically sealed dielectric tube, said radioactive primer operable to emit free electrons within said hermetically sealed dielectric tube;
• an input microstrip, said input microstrip bonded to the underside of said alumina substrate layer, said input microstrip mounted proximate said discharge gap;
• an output microstrip, said output microstrip bonded to the underside of said alumina substrate layer on the opposite side of said airtight dielectric tube from said discharge gap;
• an input signal connector, said input signal connector mounted to said metallized top layer, said input signal connector operable to input a radio frequency signal, whereby said input signal connector is electrically interconnected to said input microstrip;
• and
• an output signal connector, said output signal connector mounted to said metallized top layer, said output signal connector being electrically interconnected to said output microstrip and operable to emit said input signal as an output signal except where said input radio frequency signal excites said free electrons, energizing said gas molecules facilitating a gas discharge proximate said discharge gap, said gas discharge attenuating said input signal.

A passive, radar receiver protector, comprising:

• a hermetically sealed, gas containment means, said hermetically sealed, gas containment means operable to contain a discharge gas, said discharge gas comprising a multiplicity of gas molecules;
• a discharge gap means, said discharge gap means being proximate and cooperatively associated with said hermetically sealed, gas containment means, further said discharge gap means being formed by tapered, bevelled metallic fins mounted parallel and opposed to one another on a common low-dielectric substrate surface;
• a radioactive primer means, said radioactive primer means operable to emit free electrons within said hermetically sealed, gas containment means;
• and
• a means for inputting an incident radio frequency signal to said radar receiver protector, said incident radio frequency signal operable to be attenuated by a gas discharge within said gas containment means proximate said discharge gap means, whereby said free electrons are excited by said incident radio frequency signal, said free electrons and said incident radio frequency signal energizing said gas molecules, facilitating said gas discharge.

A passive, radar receiver protector, comprising:

• a hermetically sealed, gas containment means, said hermetically sealed, gas containment means operable to contain a discharge gas, said discharge gas comprising a multiplicity of gas molecules;
• a discharge gap means, said discharge gap means being proximate and cooperatively associated with said hermetically sealed, gas containment means, further said discharge gap means being formed by a slot in a metallic surface element on a low-dielectric substrate surface;
• a radioactive primer means, said radioactive primer means operable to emit free electrons within said hermetically sealed, gas containment means;
• and
• a means for inputting an incident radio frequency signal to said radar receiver protector, said incident radio frequency signal operable to be attenuated by a gas discharge within said gas containment means proximate said discharge gap means, whereby said free electrons are excited by said incident radio frequency signal, said free electrons and said incident radio frequency signal energizing said gas molecules, facilitating said gas discharge.