Continental Automotive Systems Corporation 5WY8230 Manuale Utente
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6. RF technical description
6.1. RF input sensitivity
There are two of definitions for the RF input sensitivity, first of case is integrated with LNA circuit for high gain
antenna performance, second of case is no integrated with LNA circuit as by passed LNA routing to the
receiver RF input.
6.1.1. RF input sensitivity
For KOR-baby board FSK receiver @ conducted
Typical sensitivity [dBm]
Min. sensitivity @RT [dBm]
Frequency
Variant
Data Rate
[kbit/s]
FSK
±35kHz dev.
FSK
±35kHz dev.
315.00
MHz
5WY 8230
(1k)
1
- 111
-108
Input sensitivity at center frequency, BER 10
-2
(V
cc
= 5V)
6.1.2. RF data output demodulation polarity
ASK
RF Signal
RF Signal
RF On
RF Off
RX DATA output
HIGH
LOW
FSK
RF Signal
RF on
RF Off
RX DATA output
HIGH
HIGH random (from noise FM compared)
7. System compatibility with TX Frequency Tolerance
System compatibility with TX Frequency Tolerance is restricted, in order to stay (for the worst-case scenario)
within 3 dB sensitivity degradation.
7.1.1. 3 dB sensitivity degradation
Max tolerance of transmitter frequency from nominal carrier frequency ("min. sensitivity 3 dB bandwidth"):
The transmitter should be considered enough as below
For KOR-baby board receiver
T = -40° to +85°C
The transmitter should be considered enough as below
For KOR-baby board receiver
T = -40° to +85°C
Max. allowed deviation of TX frequency from nominal frequency
Frequency band
FSK
±35kHz deviation
-70 kHz
+44 kHz
315 MHz
-222 ppm
+139 ppm