Interrogator and transponder test equipment
Patent 4802216 Issued on January 31, 1989. Estimated Expiration Date: 
October 15, 2007. 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.
October 15, 2007. 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 References 3750163 3860922 3900867 3913100 Identification - friend or foe system and method Scan simulator for secondary radar/IFF testing Integrity monitoring system for an aircraft navigation system Ciphering device improving the secrecy of the encoded replies of a secondary radar Identification system Interrogator-responsor system for secondary radar devices InventorsApplicationNo. 07/110646 filed on 10/15/1987US Classes:380/2, EQUIPMENT TEST OR MALFUNCTION INDICATION342/162, Digital342/169, By simulation342/45, IFF or SIF380/258Position dependent or authenticatingExaminersPrimary: Cangialosi, SalvatoreAttorney, Agent or FirmInternational ClassesG01S 7/40 (20060101)G01S 13/00 (20060101) G01S 13/76 (20060101) AbstractTest equipment is described for testing a transponder and an interrogator positioned in close proximity to one another to cause suppression of its receivers while either transponder or interrogator is transmitting incorporating an RF receiver, detector, shift register, timing controller, modulator and RF transmitter. The invention overcomes the problem of testing an interrogator and transponder with cryptograms that must be generated or stored in the test equipment and overcomes the problem of requiring two test sets for testing the interrogator and transponder. | |
