App note; generating realistic radar signals

App note; generating realistic radar signals

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By eeNews Europe

“Generating radar signals is one of the most challenging tasks for a signal generator. The signals’ combination of carrier frequency, modulation bandwidth, and, in most cases, their pulsed nature creates a series of requirements difficult to match with existing instrumentation. The increasing complexity of radar systems, the growing use of complex modulation techniques such as OFDM or UWB, and the signal quality requirements for a successful test impose severe constraints on the stimulus equipment used in radar testing. The need to emulate multi-antenna radar systems based on phased-array antennas or more recently, MIMO architectures, makes it necessary to generate multiple signals with tightly controlled timing and phase alignments. Traditionally, radar signal generation has been implemented with a baseband signal generator and an RF/μW modulator, often integrated as one piece of equipment. The Tektronix AWG70000 Series arbitrary waveform generators can be used effectively to test these architectures, with performance allowing for the direct generation of radar signals with carriers up to 20 GHz (beyond the Ku band). This solution offers much higher signal quality, cost-effectiveness, and repeatability than traditional solutions. This paper will describe how the AWG70000 series generators can be applied to a wide range of radar signal generation requirements.”

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