218842 ⎘
Amplitude modulation by means of variable impedance element the element being a diode
Multi-step drive signal for PIN diode based RF amplitude modulators
#2ASK modulator and transmitter having the same
#3CONTACTLESS IC CARD SYSTEM
#4CONTACTLESS IC CARD SYSTEM
#5Contactless IC card system
#6Contactless IC card system
#7Contactless IC card system
#8Method and circuit arrangement for load modulation in a combination comprised of a transmitting and a receiving oscillator circuit