2results about "Resonant circuit tuning" patented technology

A method includes accessing a material database associating each of a plurality of materials with one or more corresponding resonance frequencies; for each material of at least a subset of the plurality of materials in the material database: transmitting, via an RF transmitter, an RF signal into a target at a first resonance frequency for each material; receiving, via an RF receiver, a response signal from the target; and analyzing the response signal for resonance characteristics that indicate a presence of each material in the target; generating a report of each material in the target indicated by the resonance characteristics; and integrating the report with at least one of: a timestamp; image or video data from a camera; or geolocation data from a geolocation sensor.

A filtering device including a transmission line between an input and an output and a resonator, wherein a first microstrip track, a first micro-electromechanical system (MEMS) component, and a second microstrip track are connected in series between the transmission line and a ground point, and a second MEMS component is connected in parallel with the second microstrip track, the first and second MEMS components being switchable and being controlled by a circuit controlling the open or closed state of each of the first and second MEMS components, allowing the filtering device to be placed either in an all-pass operating mode or in a band-stop operating mode about a characteristic frequency of the resonator.