Patent ID: 11909426
Assignee: RENESAS DESIGN AUSTRIA GMBH
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A transmitter to transmit an amplitude modulated data signal in an RF-Field over the air to a receiver of an RFID communication system the transmitter comprising:
a wave generator to generate a carrier signal with a particular frequency and waveform;
a modulation stage to modulate the carrier signal in relation to a data signal to be transmitted;
an antenna connected to the modulation stage or wave generator via an amplifier and a matching circuit to transmit the amplitude modulated data signal in the RF-Field over the air; and
a shape stage connected to the wave generator to select the waveform of the carrier signal depending directly or indirectly on the data signal to be transmitted and to select in a first time frame (t3 →t4) after the rising edge of the data signal or encoded data signal during the rising edge of the envelope of the RF-Field a waveform of the carrier signal with the same frequency, but with lower energy content than outside of this first time frame (t3 >t4).