关键参数的数模转换器多载波GSM/EDGE的发

Figure 2. This spectrum plot depicts the four-tone MTPR performance at fCENTER = 48.9583MHz and fCLK = 260MHz of the MAX5195, which meets the most critical GSM/EDGE specifications.

Conclusion

From a system point of view, the ability of the DAC to keep high degrees of dynamic performance under multi-tone conditions, eases the transmitter path design. Traditionally, BTS systems would employ one converter per transmit channel. Now however a DAC with sufficiently high multi-tone performance, will help to simplify the transmitter architecture and reduces board space and cost by cutting down on the number of DACs required in such a system.

Notes

1 Single-carrier SFDR observed within a 25MHz WINOOW. Although the DAC doesn't meet the SFDR specification completely, a lower single-tone SFDR can be accommodated and compensated for by frequency planning.

A similar version of this article appeared in the October 2002 issue of Electronic Products magazine.

上一页  [1] [2] 

本文关键字：转换器  电工文摘，电工技术 - 电工文摘