Subs & Systems
CML – Credit-card size SDR demonstration board for wireless data applications (DE9941)Oct 1 2012 - Subs & Systems [More Subs & Systems Articles]
The DE9941 is a credit-card sized demonstration board for a complete linear modulation-based Software Defined Radio (SDR) for wireless data. It is designed to be small and low-cost with minimal components / values. The small form factor is made possible by the high integration of key functions.
There is a growing market requirement for small, flexible Software Defined Radio (SDR) data modems. The technology to accomplish this is now available with the releases of CML’s highly-integrated RF and Baseband product offerings: the CMX998, CMX994 and CMX7164. The CMX998 is a market-leading Cartesian Loop Transmitter IC providing optimum PA linearisation for non-constant envelope / linear systems. The CMX994 is seen as the ultimate Direct Conversion Receiver (DCR), providing direct conversion from RF down to I/Q baseband.
The CMX7164 multi-mode Wireless Data Modem IC, based on FirmASIC technology, offers multiple modulation schemes that can be uploaded into the device via Function Image. The DE9941 can be used to demonstrate transmit and receive performance with 4/16/64 QAM linear modulation and constant-envelope modulation schemes such as 2/4-level FSK and GMSK, which are also available on the CMX7164 Multi-mode Wireless Data Modem. Together with CML’s PE0002 interface board, a full transceiver can be demonstrated using a Function Image and control scripts.
Included on the board is a 1W power amplifier and RF performance is designed to be compliant with EN 302 561 and EN 300 113. Scripts are available from the CML Website to enable a quick-start evaluation of the board and components, says the company.More news from CML Micro