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September 2008 [Components] Tiny SDLVAs Tackle 20-GHz Bandwidth Military system designers are often faced with processing input signals over a wide dynamic range. Many systems, such as direct-finding (DF) receivers, electronicintelligence (ELINT) receivers, electroniccountermeasures (ECM) systems, radar warning receivers (RWRs), and even in commercial and military instrumentation, it is often necessary to capture and analyze narrow pulses with large variations in amplitude. Traditionally, the successive detection log ... May 2006 [Devices & ICs] SiGe T/H Amplifier Grabs Wideband Data Wideband data-acquisition modules are needed for numerous emerging applications, from software-defined radios (SDRs) to real-time digital radar. System designers often point to the ideal of an antenna feeding a high-speed analog-to-digital converter (ADC). In reality, filtering frequency translation follow the antenna, while a buffer or track-and-hold (T/H) amplifier precedes the ADC. Since the ADC likes to “see” constant amplitude, a T/H amplifier capable of high... |
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