초록 ▼

A detection wafer with a non-linear circuit for an electromagnetic detection system wherein two different transmission frequencies are used, comprising a resonant circuit connected to a non-linear element forming from the transmission frequencies, a third frequency to be detected. The non-linear ele

A detection wafer with a non-linear circuit for an electromagnetic detection system wherein two different transmission frequencies are used, comprising a resonant circuit connected to a non-linear element forming from the transmission frequencies, a third frequency to be detected. The non-linear element forms part of an amplifying semiconductor circuit connected to a supply battery and having an input circuit coupled to the resonant circuit, and an output circuit comprising a coil magnetically coupled to the coil of the resonant circuit, the resonant frequency bandwidth of the resonant circuit comprising both transmission frequencies and the frequency to be detected.

대표청구항 ▼

A detection wafer with a non-linear circuit for an electromagnetic detection system wherein two different transmission frequencies are used, comprising: a resonant circuit including a coil and a capacitor providing a certain bandwidth of resonance; a non-linear element connected to said resonant cir

A detection wafer with a non-linear circuit for an electromagnetic detection system wherein two different transmission frequencies are used, comprising: a resonant circuit including a coil and a capacitor providing a certain bandwidth of resonance; a non-linear element connected to said resonant circuit forming from the two different transmission frequencies a third frequency to be detected, said non-linear element forming part of an amplifying semiconductor circuit, said amplifying semiconductor circuit connected to a supply battery and having an input circuit coupled to said resonant circuit and an output circuit including a coil magnetically coupled to said coil of said resonant circuit, the bandwidth of said resonant circuit comprising said two different transmission frequencies and said third frequency to be detected.