Abstract: An apparatus for detecting low level pulses of millimeter wave electromagnetic radiation has an electromagnetic field receiver including: a receiving antenna configured to receive an input signal at one or more frequencies ranging from 10 GHz to 100 GHz, and a diode detector coupled to the receiving antenna, the diode detector providing an output voltage signal in response to the input signal. The apparatus also has an electronic signal processor. This produces an amplified voltage signal. The electronic signal processor also produces from the amplified voltage signal a reduced bandwidth, unipolar voltage signal proportional to a peak power of the input signal. The electronic signal processor uses this to produce an amplified reduced bandwidth, unipolar voltage signal. At least the electronic signal processor is encased in an electronically shielded housing.

Abstract: An apparatus for detecting low level pulses of millimeter wave electromagnetic radiation has an electromagnetic field receiver including: a receiving antenna configured to receive an input signal at one or more frequencies ranging from 10 GHz to 100 GHz, and a diode detector coupled to the receiving antenna, the diode detector providing an output voltage signal in response to the input signal. The apparatus also has an electronic signal processor. This produces an amplified voltage signal. The electronic signal processor also produces from the amplified voltage signal a reduced bandwidth, unipolar voltage signal proportional to a peak power of the input signal. The electronic signal processor uses this to produce an amplified reduced bandwidth, unipolar voltage signal. At least the electronic signal processor is encased in an electronically shielded housing.

Abstract: The present disclosure is directed to an apparatus for detecting low level pulses of millimeter wave electromagnetic radiation, such as by detecting the presence of weak electromagnetic emissions inside or around an electromagnetic radiation-emitting device, such as a millimeter wave scanner. The apparatus may also be used to assess such emissions and display a graphical and numerical indication of a sensed level of energy density. A hand-held portable apparatus for detecting low levels of electromagnetic radiation as well as a method for detecting low levels of electromagnetic radiation are also provided.

Abstract: The present disclosure is directed to an apparatus for detecting low level pulses of millimeter wave electromagnetic radiation including: i) an electromagnetic field receiver including: a receiving antenna configured to receive an input signal at one or more frequencies ranging from 10 GHz to 100 GHz, and a diode detector coupled to the receiving antenna, the diode detector providing an output voltage signal in response to the input signal; ii) an electronic signal processor including: at least two operational amplifiers cascaded sequentially and configured to receive the output voltage signal from the electromagnetic field receiver and to produce an amplified voltage signal, an envelope detection circuit configured to receive the amplified voltage signal and to produce a reduced bandwidth, unipolar voltage signal proportional to a peak power of the input signal, and at least one low frequency operational amplifier configured to receive the reduced bandwidth, unipolar voltage signal and to produce an amplifie