发明名称 |
OPTOELECTRONIC OSCILLATOR WITH TUNABLE FILTER |
摘要 |
An optoelectronic oscillator (OEO) is disclosed comprising an electronically tunable filter for transposing narrow pass band characteristics of a surface acoustic wave (SAW) filter to a microwave frequency to provide mode selection in the OEO. An OEO is disclosed comprising a set of optical domain components, a downconverter in communication with an output of the optical domain components, and a set of radio frequency (RF) domain components in communication with an output of the downconverter. The set of RF domain components comprises a tunable filter operating at a filter center frequency and having an output coupled to the set of optical domain components for communicating a mode selection result. The tunable filter including a tuner; and a sub-filter. The sub-filter operating at a fixed center frequency to provide mode selection and adjacent mode suppression with respect to the tunable filter center frequency. The sub-filter center frequency being lower than the tunable filter center frequency, and a ratio of the tunable filter center frequency to a bandwidth of the sub-filter being at least 1000:1. |
申请公布号 |
WO2017031575(A1) |
申请公布日期 |
2017.03.02 |
申请号 |
WO2016CA50975 |
申请日期 |
2016.08.19 |
申请人 |
NANOWAVE TECHNOLOGIES INC. |
发明人 |
NICHOLLS, Charles William Tremlett |
分类号 |
H03B17/00;G02F2/02;H03K3/42;H03K5/14 |
主分类号 |
H03B17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|