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From Bob Helsel, Editor of the PXI Newsletter:

Welcome to the June edition of the PXI Newsletter.  Our intent is to educate and inform you about how the PXI standard is being used in modular test systems for a wide variety of industries.

PXI Systems Alliance
The PXI platform is standardized around a specification maintained by the PXI Systems Alliance. Comprised of 54 companies that specialize in PXI, this alliance has three main goals:

  1. Promote PXI as an open standard and encourage multivendor support.

  2. Ensure multivendor interoperability of PXI products at the mechanical, electrical, and software levels, while maintaining complete interoperability with CompactPCI.

  3. Maintain the PXI specification, making revisions when necessary, while keeping backward compatibility with products built to earlier revisions of the PXI specification.

These goals are designed to simplify and improve your experience with PXI.

Our main article this month, MIMO RFIC Test Architectures, discusses the practical constraints of testing Radio Frequency Integrated Circuit (RFIC) devices in a Multiple-Input Multiple-Output (MIMO) topology.

In the New PXI Products section, we are showcasing PXI products recently released by members of the PXI Systems Alliance.

Thanks to VTI Instruments, our sponsor for this month's issue.

Visit http://www.pxisa.org for more information.


Main Article


MIMO RFIC Test Architectures

Christopher D. Ziomek and Matthew T. Hunter
ZTEC Instruments, Inc.

This paper discusses the practical constraints of testing Radio Frequency Integrated Circuit (RFIC) devices in a Multiple-Input Multiple-Output (MIMO) topology.Techniques to optimize test equipment setup and operation for MIMO architectures are detailed. Because RFICs are tested at a device level, this paper focuses on MIMO compliance testing and characterization within a cabled RF environment without open-air antennas. The IEEE 802.11 WLAN protocol is used as an example to detail the theory, specific use cases, and test scenarios.

1. Introduction

The drive to increase wireless data rates within the limited radio frequency (RF) spectrum has led to radios with capabilities beyond a single-input single-output (SISO) topology. SISO radio devices use one transmitter and one receiver to send data over a single RF channel. Recently introduced wireless protocols have adopted Multiple-Input Multiple-Output (MIMO) topologies that use two or more transmitters and two or more receivers to send data simultaneously over the same RF bandwidth.



Thanks to all our readers.
Bob Helsel, Editor

vti -sponsor3

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New PXI Products

The PXI platform continues its explosive growth with many new product introductions. New products introduced in the last three months include (listed in the order received):

CalEasy Software for PXI Products
New Calibration Executive Software Package Supports User Verification / Calibration of Geotest Products

VPC G40x - Pull-Thru Interface on Slides
VPC’s G40x offers 40 interconnect adapter slots, enabling pull-thru removal of connector modules and instrumentation in one piece from the chassis backplane with an additional 8-10 slots in a central tier for optional discrete wiring.

MAC Panel Introduces a Dual Tier SCOUT Mass Interface
Featuring all of the performance benefits of the popular SCOUT interface line, the new Dual Tier SCOUT interface provides interconnectivity for two 18-slot PXI chassis with support for up to 8,400 I/O points with 8 external wiring slots.

ZTEC Instruments ZT8551 I/Q Generator
Arbitrary Waveform Generator optimized for baseband I/Q modulation signal generation from DC to 300 MHz. This single slot AWG has 16 bits of resolution a sample rate of 1 GS/s and comes in either PXI or PXIe.

NI PXIe-4357 RTD Module
The high-performance module is optimized for temperature measurements with Pt100 RTD sensors for a variety of thermal monitoring applications.


©2012 PXI Systems Alliance (PXISA)
PO Box 1016; Niwot, CO 80544