Passive identification of friend vs. foe apparatus and method

Passive interrogator label system having offset compensation and

Passive interrogator label system with a surface acoustic wave t

Passive RF transponder and method

Passive SAW-ID tags using a chirp transducer

Passive surface wave sensor which can be wirelessly interrogated

Passive transmitting sensor

Passive transponder

Passive transponder for locating avalanche victims

Police activity transponder utilizing a vehicle interface

Portable data processing device capable of transmitting processe

Position coded pulse communication system

Positioning with RF-ID transponders

Power supply and power enable circuit for an RF/ID transponder

Power-efficient technique for multiple tag discrimination

Procedure for reading the data stored in a transponder and a...

Process for carrying out a non-contact remote enquiry

Process for carrying out a non-contact remote interrogation

Programmable object identification transponder system

Programmable source of pulse trains on intermediate...