Wireless interface for electronic devices located in enclosed spaces
April 13, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesRadar transponder apparatus and signal processing technique Spread spectrum adaptive power control communications system and method EMI source detector Airborne radiotelephone communications system Global positioning system (GPS) linked satellite and missile communication systems Apparatus and method for secure radio communication Correlator based electromagnetic interference responsive control system useful in medical devices System for generating and using global radio frequency maps Adjusting the timing and synchronization of a radio's oscillator with a signal from an SATPS satellite Patent #: 5970400 InventorAssigneeApplicationNo. 548698 filed on 04/13/2000US Classes:375/130SPREAD SPECTRUMExaminersPrimary: Tse, Young T.Attorney, Agent or FirmForeign Patent References
International ClassH04B 007/185AbstractA wireless communication system for transmitting and receiving radio frequency (RF) signals inside an enclosure such as a hull of a torpedo, autonomous underwater vehicle, or aircraft, an automotive body, or a test equipment enclosure. The wireless communication system employs low power, low frequency, spread spectrum signals to reduce multi-path transmission and reception problems inside the enclosure. The wireless communication system includes first and second electronic devices located in the enclosure. A first transmitter/receiver is connected to the first electronic device. The first transmitter/receiver transmits spread spectrum signals generated by the first electronic device and receives spread spectrum signals. A second transmitter/receiver is connected to the second electronic device. The second transmitter/receiver transmits spread spectrum signals generated by the second electronic device and receives spread spectrum signals. The first and second transmitter/receivers operate above a thermal noise threshold of the first and second transmitter/receivers and below electromagnetic compatibility (EMC) and electromagnetic interference (EMI) standards. If the enclosure includes walls which separate the enclosure into multiple sections and the enclosure is metallic, apertures filled with a dielectric material and a dipole penetrator antennas can be employed to reduce attenuation.Other References
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