KESRX04IG 参数 Datasheet PDF下载

KESRX04

C5

R10

C10

R11

C6

RSSI

DETB

DF0

DF1

DF2

PEAK

C22

100k

RSSI

Output

Anti-Jam

Circuit

AMP

A

AMP

B

DATOP

AMP

C

Sallen Key

Sallen-key

Datafilter

Data Filter

REF

SLICER

R6

100k

DSN

REF

Figure 8 By-passing the anti - jamming circuit



Ω

10.7

MHz.

100nF

Signal Generator 2

Before

Connecting

Remove

IF Filter

KESRX04 PCB

IFIN

RSSI

FET Probe

Oscilloscope 1

IFOUT

AGC

Spectrum Analyser

N/C

N/C

RFin RFGND

GND

Vcc DATA PD N/C

Volt meter

433.92 MHz.

Signal Generator 1

Unmodulated

Signal

A

DC PSU (3 to 6V)

Figure 9 Characterising the receiver performance (Figure 9A to 9D)

Note: 1. 250 Ohms added to signal generator 2 to modifiy its characteristic impedance to mimic the output impedance of the

ceramic filter.

2. 100nF capacitor to prevent de-biasing of IFIN.

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