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PMC module tailored for software radio apps

Posted: 30 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:digital down converter? software radio module?

Pentek Inc. has introduced the Model 7152, a quad 200MHz, 16bit A/D digitizer with a 32-channel digital down converter (DDC) configured in a PMC format. This high-density, single-slot Virtex-5 FPGA software radio solution delivers four 16bit, 200MHz A/Ds with 32 FPGA-based DDCs, and an extended DDC bandwidth range from 20kHz to 10MHz.

The high-speed software PMC module includes a high-performance, factory-installed IP core for users who want to purchase a product with signal processing functions already installed and operational. It is well suited for real-time software radio, beamforming, signal-intelligence and radar systems.

The 7152 PMC module is available in a variety of form factors. The 7652 is a PCI board, while the 7252 and 7352 are 6U and 3U Compact PCI boards, respectively. Key features include proprietary signal-processing techniques such as 200MHz sampling rate DDCs, channel summation and power meters with threshold detectors in addition to an extended range of decimation.

The 7152 features 32 power meters that continuously measure the individual average power output of each of the 32 DDC channels. The time constant of the averaging interval for each meter is programmable for up to 16K samples. In addition, 32 threshold detectors automatically send an interrupt to the processor if the average power level of any DDC falls below or exceeds a programmable threshold. The built-in power meters and threshold detectors offload these tasks from a downstream processor and present average power measurements for each channel in easy-to-read registers.

A second set of new features makes the module suitable for beamforming applications. Each DDC channel offers programmable gain and phase adjustments, which can be applied individually or synchronously to all 32 channels. A summation block adds the complex outputs of selected DDC channels. By adjusting the phase offset and weighting of the individual channels, followed by summation, the antenna can be "steered," rotating the azimuth angle to enhance receptivity in a particular direction.

The 7152 is supported by ReadyFlow Board Support Packages running under Linux, Windows and VxWorks operating systems. The associated model numbers are 4994A for Linux platforms, 4995A for Windows platforms and 4996A for VxWorks platforms. These are complete software packages that include examples and driver interfaces for each operating system.

Pricing starts at $14,500 for the hardware. Delivery is 10 to 12 weeks ARO.

- Gina Roos
eeProductCenter





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