초록 ▼

An apparatus for locating passive interference sources by using a pair of different RF signals in conjunction with an acoustic signal to generate intermodulation products in metal-to-metal junctions. The acoustic tagging technique utilizes a focused, high power beam of acoustic energy to mechanicall

An apparatus for locating passive interference sources by using a pair of different RF signals in conjunction with an acoustic signal to generate intermodulation products in metal-to-metal junctions. The acoustic tagging technique utilizes a focused, high power beam of acoustic energy to mechanically vibrate the suspected offending junction. This mechanical vibration causes the level of intermodulation products that are generated in the junction to become amplitude modulated at the frequency of the acoustic illumination. The detection of the AM sidebands with a low noise RF receiver that is tuned to a particular intermodulated component, permits the offending junction to be located.

대표청구항 ▼

An intermodulation interference locator apparatus comprising in combination: a first RF signal means operating at a first RF frequency, a second RF signal means operating at a second RF frequency, a means for vibrating; a first and second member joined together to form a metal junction, said junctio

An intermodulation interference locator apparatus comprising in combination: a first RF signal means operating at a first RF frequency, a second RF signal means operating at a second RF frequency, a means for vibrating; a first and second member joined together to form a metal junction, said junction being exposed to said first and second RF frequencies, said vibrating means operatively connected to said junction to produce mechanical vibrations in said junction said junction responding to said first and second RF frequencies and said mechanical vibrations by generating an intermodulation inteference signal, and, an RF receiver means tuned to the intermodulation frequency of said first and second RF frequency, said RF receiver means receiving and detecting said intermodulation inteference signal generated by said junction, said RF receiver means providing an output signal in response to said intermodulation interference signal.