Abstract: A filter 2 for collecting PMs, a microwave transmitter 30 for emitting electromagnetic waves whose frequency is dozens of GHz-a few of THz onto the filter 2, a microwave receiver 31 for detecting an intensity of the electromagnetic waves that have transmitted through the filter 2, and a computing means for computing a collection amount of PMs from the intensity that has been detected with the microwave receiver 31 are included. Since it is possible to detect the distribution of the collection amount of PMs with good accuracy, it is possible to carry out a recycling process in a state where the collection amount does not become too much, and thereby it is possible to make a reducing-agent supply amount into exhaust gases minimum at the time of the recycling process.

Abstract: To provide a terahertz beam scanning apparatus and method that can scan a terahertz beam at high speed over a wide angle. The terahertz beam scanning apparatus includes: a laser device 12 that generates a first laser beam 1 and a second laser beam 2 having different wavelengths; a laser optical system 14 that focuses the first laser beam 1 and the second laser beam 2 on a same common focal point 14b; and a terahertz generator 16 that is located at the common focal point and generates a terahertz beam 4 by difference frequency mixing. The laser optical system 14 is configured to be capable of changing a relative incidence ?i between the first laser beam and the second laser beam to the terahertz generator.

Abstract: To provide a terahertz beam scanning apparatus and method that can scan a terahertz beam at high speed over a wide angle. The terahertz beam scanning apparatus includes: a laser device 12 that generates a first laser beam 1 and a second laser beam 2 having different wavelengths; a laser optical system 14 that focuses the first laser beam 1 and the second laser beam 2 on a same common focal point 14b; and a terahertz generator 16 that is located at the common focal point and generates a terahertz beam 4 by difference frequency mixing. The laser optical system 14 is configured to be capable of changing a relative incidence ?i between the first laser beam and the second laser beam to the terahertz generator.

Abstract: A filter 2 for collecting PMs, a microwave transmitter 30 for emitting electromagnetic waves whose frequency is dozens of GHz-a few of THz onto the filter 2, a microwave receiver 31 for detecting an intensity of the electromagnetic waves that have transmitted through the filter 2, and a computing means for computing a collection amount of PMs from the intensity that has been detected with the microwave receiver 31 are included. Since it is possible to detect the distribution of the collection amount of PMs with good accuracy, it is possible to carry out a recycling process in a state where the collection amount does not become too much, and thereby it is possible to make a reducing-agent supply amount into exhaust gases minimum at the time of the recycling process.

Abstract: An antenna device which is connected to a radio module performing radio communications with a system using a first band and a system using a second band, has an antenna element which transmits/receives radio signals in the first and second bands. The antenna device has first and second matching circuits corresponding to the first and second bands, and also disposes a switching circuit between the first and second bands and the radio module. A first filter circuit is connected between the first matching circuit and the antenna element. The first filter circuit passes the radio signal in the first band and also attenuates the radio signal in the second band. Meanwhile, a second filter circuit is connected between the second matching circuit and the antenna element. The second filter circuit passes the radio signal in the second band and also attenuates the radio signal in the first band.

Abstract: There is disclosed an apparatus comprising: a terahertz wave generation device which generates a terahertz wave; a terahertz wave irradiation device which irradiates an object to be inspected with the terahertz wave; and a scattering intensity detection device which cuts a rectilinear wave of the terahertz wave which has passed through the object to be inspected and which detects an intensity of a scattered wave, and a scattered material such as powder or foam contained in an envelope, a capsule, a container or the like is detected in a non-destructive manner without unsealing the envelope or the like.

Abstract: An antenna device which is connected to a radio module performing radio communications with a system using a first band and a system using a second band, has an antenna element which transmits/receives radio signals in the first and second bands. The antenna device has first and second matching circuits corresponding to the first and second bands, and also disposes a switching circuit between the first and second bands and the radio module. A first filter circuit is connected between the first matching circuit and the antenna element. The first filter circuit passes the radio signal in the first band and also attenuates the radio signal in the second band. Meanwhile, a second filter circuit is connected between the second matching circuit and the antenna element. The second filter circuit passes the radio signal in the second band and also attenuates the radio signal in the first band.

Abstract: There is disclosed an apparatus comprising: a terahertz wave generation device which generates a terahertz wave; a terahertz wave irradiation device which irradiates an object to be inspected with the terahertz wave; and a scattering intensity detection device which cuts a rectilinear wave of the terahertz wave which has passed through the object to be inspected and which detects an intensity of a scattered wave, and a scattered material such as powder or foam contained in an envelope, a capsule, a container or the like is detected in a non-destructive manner without unsealing the envelope or the like.