Title:
光ＲＦスペクトル分析器
Document Type and Number:
Japanese Patent JP7050334
Kind Code:
B2
Abstract:
This disclosure relates to optical RF spectrum analysers and methods for analysing an input RF signal. An optical modulator modulates an input RF signal onto a carrier frequency and an optical spectral weight with a spectral weight function modifies the modulated optical signal. The spectral weight defines a frequency relationship between the spectral weight function and the carrier frequency. A frequency control module modifies the frequency relationship between the spectral weight function and the carrier frequency over time. An optical sensor senses the modified optical signal over time and to generates an RF signal over time. A signal recovery module calculates the RF spectrum based on the RF signal over time. Shifting the spectral weight against the carrier frequency over time results in a high spectral resolution even if the spectral weight is relatively broad band. The result is an increased spectral resolution at a reduced price/complexity and increased robustness.
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Inventors:
Sijie song
Xiao Kui
Xiao Kui
Application Number:
JP2019510960A
Publication Date:
April 08, 2022
Filing Date:
August 22, 2017
Export Citation:
Assignee:
UNIVERSITY OF SYDNEY
International Classes:
G01R23/14; G01R23/165
Domestic Patent References:
| JP2001242201A | ||||
| JP2003004779A | ||||
| JP2007212427A | ||||
| JP5307077A | ||||
| JP2015129732A | ||||
| JP2014190964A | ||||
| JP8101066A |
Foreign References:
| US6307655 | ||||
| US4922256 | ||||
| US20130315590 | ||||
| US4695790 |
Attorney, Agent or Firm:
Hidewa Patent Office