operational description

FCC ID: GQ4-32T

Operational Description

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FCCID_1011022

May 23, 2006 TRW Automotive U.S. LLC d.b.a TRW Automotive Electronics 24175 Research Drive TR W Farmington Hills, MI 48335 Tel: 248.478.7210 Fax: 248.478.7241 RE: Certification for TRW TPM ’07 Sensor Model #: FCC ID: GQ4-32T Canada IC: 1470A-13T PRINCIPLES OF CIRCUIT OPERATION The sensor incorporates an ASIC to measure the parameters within the tire. The ASIC outputs the measured data in digital pulses. The digital data gates on and off a power amplifier which couples the RF carrier to the antenna. The transmitted signal uses Frequency Shift Keying (FSK). The carrier frequency of the sensor is 315MHz typically. The worst case frequency shift of the carrier is 314.77MHz for the low frequency and 315.15MHz for the high frequency shift. The receiver bandwidth must be wide enough to pass the transmitter worst case frequency shifts. Reference block diagram in Figure 2. EXHIBIT_______ Page ___ of ___


Document Created: 2008-09-29 13:46:26
Document Modified: 2008-09-29 13:46:26
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