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October 2010 [Devices & ICs] ICs Control Gain In Wireless Networks CAPACITY AND BANDWIDTH EFFICIENCY IN CURRENT AND EMERGING wireless communications formats such as Long Term Evolution (LTE) systems are driving the design of smaller base stations with multiple-carrier capabilities. The complex architectures in these systems, such as the use of multiple-input, multipleoutput (MIMO) antenna schemes, require even greater levels of integration in both base stations and handsets. Since many of these systems require variable gain control, which... September 2009 [Devices & ICs] Integrated Devices Arm Infrastructure Radios Integration has been critical to RF electronics in mobile handsets, although elusive to achieve in infrastructure equipment. The classic tradeoff in achieving integration has been the choice between using discrete components, with their superior performance, or integrated circuits (ICs), with their small size. Recently, Analog Devices has developed a series of highly integrated phase-lock-loop (PLL) circuits that also... November 2002 [Test & Measurement] Make Precise Base-Station Power Measurements Measurements of gain and phase are vital to the operation of many radio systems. At one time, this capability required complex and expensive instruments or circuitry. Fortunately, now this capability can be incorporated into wireless infrastructure... |
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