A large bandwidth, large angle, continuous scanning optically controlled phased array antenna receiving device and method
A technology of optically controlled phased arrays and receiving devices, which is applied to antennas, electrical components, etc., can solve problems such as the difficulty in implementing large-scale antenna array extension applications, complex structures, and difficulty in realizing continuous scanning, etc., to reduce common-mode noise and simplify System structure, effect of reducing bandwidth requirements
Active Publication Date: 2020-04-28
DALIAN UNIV OF TECH
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Problems solved by technology
[0007] The present invention provides a large-bandwidth, large-angle, continuous scanning optically controlled phased array antenna receiving device and method, which effectively solves the problems in the background technology that it is difficult to simultaneously meet the requirements of continuous scanning, complex structure and difficult to realize the expansion and application of large-scale antenna arrays.
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[0040] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0041] The optical control phased array antenna receiving device and method of the present invention has the functions of providing large bandwidth, large angle and continuous scanning for microwave signal reception of an M×N antenna array.
[0042] figure 1 It is a block diagram of a large bandwidth, large angle, continuous scanning optical control phased array antenna receiving device of the present invention. The optically controlled phased array antenna receiving device includes: a single-wavelength laser source, an optical amplifier, a 1×(M+1) optical power splitter, an electro-optical conversion unit, an optical delay unit, a 1×N optical power combiner, The 1×M optical power combiner, optical sideband filter, and differential photoelectric detection unit are sequentially connected through optical fibers or optical waveguides.
[0043] The microw...
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The present invention discloses a large-broadband and large-angle continuous scanning optically controlling phased array antenna receiving device and method, belonging to the technical field of microwave photons. The device and the method employ a cascading microring with anti-resonance working to form a delay continuous regulation and control subunit, employs an optical switch to switch waveguides with different lengths to form a delay discrete regulation and control subunit, and an optical delay unit formed by the delay continuous regulation and control subunit and the delay discrete regulation and control subunit is configured to provide delay compensation required by receiving large-broadband and large-angle continuous scanning phased-array antenna microwave signals. The electro-optical phase modulation is employed to achieve photovoltaic conversion of the antenna receiving microwave signals, avoid usage of an offset point control circuit and simplify the system structure. The optical single side band filtering is employed to reduce the requirement for the delay unit broadband, the difference balance photoelectric detection is employed to effectively reduce the common-mode noise and improve the system performances.
Description
technical field [0001] The invention belongs to the technical field of microwave photonics, and relates to a large bandwidth, large angle, continuous scanning optical control phased array antenna receiving device and method. Background technique [0002] Optically controlled phased array antennas can overcome the inherent aperture effect and transit time limitations of traditional phased array antennas based on electrical phase shifters, and have significant advantages in achieving large bandwidth and large angle scanning. Technology and other fields have broad application prospects. In practical applications, especially in the process of microwave signal reception, the optically controlled phased array antenna should be able to receive signals within a wider range of receiving angles without spatial blind spots, which requires the optical delay in the optically controlled phased array antenna. The time unit can not only provide a large enough delay compensation amount, but...
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IPC IPC(8): H01Q3/26
CPCH01Q3/2676H01Q3/2682
Inventor 韩秀友申芳芳苏鑫鑫武震林赵明山
Owner DALIAN UNIV OF TECH