Anti-Tampering Detection Using Target Circuit RF Signature
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United States of America Patent
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Issued Date -
Nov 3, 2011
app pub date -
May 2, 2011
filing date -
May 3, 2010
priority date (Note) -
Abandoned
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Abstract
An anti-tampering device and method to inhibit or prevent unauthorized probing of an electronic circuit. Propriety target circuitry transmits a distinct signature in the form of an RF signal which is received by the RF anti-tampering detection circuitry. The transmitted RF signature is monitored by the RF anti-tampering detection circuitry for user-defined changes. In the event an unauthorized attempt is made to probe the target system electronics, the mass of the probe alters the RF transmission characteristics of the RF transmission media, changing the RF signature. The altered RF signature is received by the receiving antenna and RF receiver and is processed by signal processing electronics. The change in the RF signature indicates a tamper event and a predefined anti-tamper event is generated.
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