Funkwellenerzeugungsvorrichtung, Funkwellenerkennungsvorrichtung und Funkwellensende- und -Empfangssystem

Details

Veröffentlichungs-Nr.

EP4749939

Anmeldetag

19. November 2025

Veröffentlichung

27. Mai 2026

Rechtsraum

EP

IPC

H04B7/04

Abstract

An OAM radio wave transmitting and receiving system keeps an apparatus size from increasing by performing localized measurement of an OAM radio wave to acquire OAM radio wave information. A radio wave generating apparatus includes a controlling section and a radio wave transmitting section. The controlling section includes an OAM radio wave information setting section for generating a transmission radio wave signal according to an OAM mode order, a phase changing section for linearly changing a phase of the transmission radio wave signal over time depending on the OAM mode order, and a complex signal generating section for generating a complex signal from the transmission radio wave signal that has been changed in phase by the phase changing section and a reference signal. The radio wave transmitting section includes a complex signal converting section for breaking down a signal component of the complex signal into a real part and an imaginary part, a wireless processing section for generating a wireless signal from the signal component of the complex signal that has been broken down into the real part and the imaginary part, and an array antenna for transmitting the wireless signal as an OAM radio wave.

Anmelder

Firma

Hitachi, Ltd.

Land

🇯🇵 Japan