发明名称 |
PHOTONIC BEAMFORMING SYSTEM FOR A PHASED ARRAY ANTENNA RECEIVER |
摘要 |
It is an object of the present invention a photonic system to perform beamforming of a radio signal received by a phased array antenna with N antenna elements. It provides true-time delay beamforming enabled by tunable optical delay lines (6) with a periodic frequency response. The present invention provides four key advantages: photonic RF phase shifting; highly-sensitive coherent detection with intrinsic photonic frequency downconversion; phase noise cancellation, since a frequency-shifted optical local oscillator can be derived from a same laser source (1) used to feed electro-optic modulators (5); and the possibility of only requiring a single delay line, shared amongst all tunable optical delay lines. Such set of advantages makes the proposed system extremely attractive for high-end wireless receivers, required for demanding applications such as satellite communication systems and broadband wireless signal transmission. |
申请公布号 |
WO2016170466(A1) |
申请公布日期 |
2016.10.27 |
申请号 |
WO2016IB52206 |
申请日期 |
2016.04.18 |
申请人 |
INSTITUTO DE TELECOMUNICAÇÕES |
发明人 |
VIDAL DRUMMOND, Miguel;NUNES NOGUEIRA, Rogério;CUNHA DUARTE, Vanessa |
分类号 |
H04B10/2575;H01Q3/26;H04B10/64 |
主分类号 |
H04B10/2575 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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