CML Microcircuits DE9941A User Manual

UM9941A/1 April 2020
Features
 Demonstration of SDR wireless data modem supporting multiple
bit rates and modulation schemes
 Direct Conversion Receiver (CMX994E) and Cartesian Feedback
Loop Transmitter (CMX998)
 1W Transmitter Operation
 Designed to meet EN 302 561 / EN 300 113
1

Brief Description

The DE9941A i s a small demonstration platform for the CMX994E Di rect Conversion Receiver, the CMX998 Ca rtesian Loop
Tra ns mitter a nd the CMX7364 Mul ti -mode Hi gh Performa nce Wi rel es s Da ta Modem. The s ma l l form fa ctor of the
demonstration/evaluation platform is possible due to the compact nature of the CML IC s oluti ons . The DE9941A ca n be
us ed to demonstrate Tx a nd Rx performance with multi-level QAM, FSK a nd GMSK type modul a ti on. Together wi th the
on-board ARM host controller, a full tra nsceiver ca n be demons tra ted us i ng a Functi on Ima ge  a nd control s cri pts .
The DE9941A provi des a Fractional-N PLL a nd VCO to provi de l ocal oscillator signa l s for the CMX994E a nd CMX998. The
on-board ARM mi crocontroller, together with the control scripts, gives the user the a bility to program the RF s ynthesi s er
to the correct operating frequencies. The design also i ncludes a 1W power a mplifier, ha rmoni c fi l ter a nd Tx/Rx s wi tch.
The RF performance is designed to be compliant wi th EN 302 561 / EN 300 113 a nd a l l the ci rcui ts a re provi ded wi th
power-down ca pa bi l i ty to a l l ow s ta ndby functi on a l i ty.
The des i gn i s a i med to be l ow cos t, wi th a mi ni mum number of component types /va l ues .
 2020 CML Microsystems Plc
Advanced SDR Demonstrator
USER MANUAL
 Provides a demonstration platform for the
CMX7364 Multi-mode High Performance Wireless
Data Modem
 On-board PLL and VCO for 350 to 400 MHz
Operation
 On-board STM32 ARM microcontroller and script
handler + USB interface
 Small size – 87mm x 55mm
DE9941A
User Manual
Advance Information
16 April 2020