Resonant tag circuits useful in electronic security systems

Retractable helical antenna

RF transponder system with parallel resonant interrogation serie

RFID tag having integral electrical bridge and method of...

RFID tag wide bandwidth logarithmic spiral antenna method...

Rod antenna, particularly for mobile FM signal transducing appli

Rotation-independent helical antenna

Safe sticker antenna for mobile phones

Satellite adaptive antenna system

Scanning, circularly polarized varied impedance transmission...

Self phased antenna element with dielectric and associated metho

Self-deploying helical structure

Semiconductor chip having a radio-frequency identification...

Semiconductor device and fabrication method thereof

Semiconductor memory module having built-in antenna

Sensor array for enhanced directivity

Short conical antenna

Short end-fire circularly polarized antenna

Side-by-side coil-fed antenna for a portable radio

Signal processing circuit, and non-contact IC card and tag...