Frequenzabwärtsumsetzungseinrichtung und Kommunikationseinrichtung

Details

Veröffentlichungs-Nr.

EP4723176

Anmeldetag

31. Mai 2023

Veröffentlichung

5. Dezember 2024

Rechtsraum

EP

IPC

H01L31/10, G02F2/02(WANKE MICHAEL C et al.)

Abstract

The present invention improves conversion gain in frequency down-conversion. Provided is a frequency down-conversion device which receives input of an optical data signal and an optical subcarrier signal having different frequencies from each other in an infrared light frequency band and outputs a data signal having a radio wave band frequency or a baseband frequency. The device has a field-effect transistor structure in which a source electrode, a drain electrode, a first gate electrode having a plurality of parallelly arranged first fingers, and a second gate electrode having a plurality of parallelly arranged second fingers are arranged on a mesa. The plurality of first fingers and the plurality of second fingers are arranged in a nested state, the second gate electrode receives input of a local transmission signal having a frequency which is in a band between the sub-terahertz band and the terahertz band and is close to a difference frequency between the frequency of the optical data signal and the frequency of the optical subcarrier signal, and a data signal having a frequency corresponding to the absolute difference between a predetermined frequency and the difference frequency is output from the first gate electrode.

Anmelder

Firma

Tohoku University

Land

🇯🇵 Japan

Fachgebiete