CHR2270-QRG, a Multi-function Reflective Transponder Operating at 5.8GHz and Features a Very Low Power Consumption

时间： 2023-10-03 来源：UMS News

技术问答

The CHR2270-QRG is a reflective transponder operating at 5.8GHz for short and medium range automotive communication (DSRC), Electronic Traffic Control (ETC), and identification transponders.

This multi-function reflective transponder is designed using SiGe technology and features a very low power consumption which can result in a 5-year battery life.

The CHR2270-QRG features numerous assets:

Single RF antenna port for compact systems
Integrated high selectivity wake-up
Ultra-low standby current
3V battery bias voltage range
Downlink RF input power monitoring
Uplink gain control
-25℃ to +90℃ operating temperature range
Very good performance over temperature
More than 5 years of battery life
Plastic package (QFN-24)
ESD protection.

Three operating modes are implemented:

STANDBY: ultra-low current AM detector, providing a wake-up signal (high selectivity system avoiding untimely wake-up) on SB-Out output.
DOWLINK: low current AM detector, with optimized IF bandwidth.
UPLINK: multiplier based on a passive reflective mixer.

The circuit is designed to be fully compliant with ETSI EN 300674, ETSI 200674, and Italian norms.

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UMS传感器/检测器/检波器选型表

UMS传感器/检测器/检波器选型：RF Bandwidth (GHz)min：5-24.5，RF Bandwidth (GHz)max：5.88-44，Bias(mA)：0.8-350，Bias(V)：3-18.4.

产品型号	品类	RF Bandwidth (GHz)min	RF Bandwidth (GHz)max	Gain RX(dB)	Gain TX(dB)	Pout TX(dBm)	NF RX(dB)	Number of Bit Atten.	Bias(mA)	Bias(V)	Case
CHC2442-QPG	传感器	24	24.5	37	VCO incl.	13.5	11.5	5	225	3.3	QFN