Software Radio Transceiver
Fri, 02/25/2005 - 9:12am
Pentek introduces a complete software radio transceiver module suitable for connection to IF or RF ports of a communication system. The Model 7140 PMC module combines both transmit and receive capabilities with a high-performance Virtex II-Pro field-programmable gate array (FPGA) and supports the emerging VITA 42 XMC standard with optional switched-fabric interfaces for high-speed I/O. This module is also available in a variety of form factors including PCI, 3U and 6U cPCI, and a PMC conduction-cooled version. The front end of the module accepts two +4 dBm full-scale analog RF inputs and transformer-couples them into 14-bit A/D converters running at 80 or 105 MHz. The digitized output signals pass to a Virtex-II Pro FPGA for signal processing or routing to other module resources. These resources include a quad digital downconverter, a digital upconverter with dual D/A converters, 512 MB DDR SDRAM delay memory, and the PCI bus. The FPGA also serves as a control and status engine with data and programming interfaces to each of the on-board resources. Factory-installed FPGA functions include data multiplexing, channel selection, data packing, gating, triggering, and SDRAM memory control.