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This article presents a microstrip patch antenna-based permittivity sensor that can be used to characterize a wide range of liquids as well as solids. This is the first antenna-based sensor that can ...

Matter detection based on strong microwave resonance has been widely studied. However, most of the currently available high-precision sensors are wired mode, making them difficult to enable no-contact ...

You can buy the Sensor, which comes with everything you need to attach it to your mailbox, as well as an antenna for $29.99. Or you can buy the Sensor and a Ring Bridge for $49.99.

The sensor contains an antenna that captures the energy from the router. The sensor stores that energy and, once there is enough, the sensor switches on, measures the temperature and sends a ...

With the directional antenna that the CSIR Meraka team has developed, initial tests have shown that it can reduce power consumption by between 3 and 30 times and improve battery longevity by ...