【摘 要】
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Background, Motivation and Objective Passive SAW sensors systems have small working distance. The wide bandwidth required for simultaneous operation of multiple sensors restricts the acceptable maximu
【机 构】
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Joint Stock Company “NPP ”Radar mms", Russian Federation
论文部分内容阅读
Background, Motivation and Objective Passive SAW sensors systems have small working distance. The wide bandwidth required for simultaneous operation of multiple sensors restricts the acceptable maximum reflection and the spectral power density of the interrogating signal. For example, the approach using a single port reflective delay line topology divided into segments with unique frequencies operates up to about 3 meters [1]. When the simultaneous operation is not required and the available bandwidth is limited, different design principles are required. We present an example of a temperature self-compensated sensitive element design for a force sensor and of an interrogation algorithm that helps increasing working distance while satisfying limited bandwidth requirement.
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