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An antenna complex weight feeding network based on double time modulation

A technology of time modulation and feed network, which is applied in the direction of antenna, antenna grounding switch structure connection, electrical components, etc., can solve the problems of time modulation technology limitation, high overall complexity, etc., achieve good suppression effect, simplify feed network, low Effect of Dynamic Range Ratio

Inactive Publication Date: 2018-12-18
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, the current time modulation array can realize the modulation of the amplitude alone, or the modulation of the phase alone, which leads to great limitations in the application of the time modulation technology in many occasions.
Phased array is the mainstream research direction of current advanced radar and communication systems. Its feed network usually needs not only the phase weighter composed of phase shifter, but also the amplitude weighting through the power divider or variable gain amplifier of the feed network. overall high complexity

Method used

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  • An antenna complex weight feeding network based on double time modulation
  • An antenna complex weight feeding network based on double time modulation
  • An antenna complex weight feeding network based on double time modulation

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Embodiment

[0032] The dual time modulation feed network proposed by the present invention has application value in many application occasions, among which the phased array is an important application. Below we combine image 3 And its embodiment, the application of the double time modulation feed network in the phased array is further described in detail.

[0033] combine image 3 , is a schematic diagram of a complex-weighted phased array for dual time modulation according to an embodiment of the present invention. The double time modulated complex weight phased array is composed of N double time modulated complex weight feed units and connected N antenna units, FPGA control circuit, and 1-N power divider. The double time modulation complex weight feeding unit is controlled by the periodic time sequence sent by the FPGA control circuit, and can simultaneously complete the weighting of the single sideband amplitude and phase of the network.

[0034] Exemplarily, the size of the entire...

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Abstract

The invention discloses an antenna complex weight feeding network based on double time modulation, which comprises N double time modulation complex weight feeding units, an FPGA control circuit and 1-N power divider. The double time modulation complex weight feeding unit is used for completing the single sideband amplitude and phase weighting of the network; The FPGA control circuit is used for issuing a periodic time series to control the double time modulation complex weight feeding unit; and 1-N power divider is used for feeding the N double time modulation complex weight feeding units. Theinvention is based on the time modulation technology, and periodically sends out a control signal to change the state of a radio frequency switch through the FPGA circuit, so that the antenna can simultaneously complete the amplitude and phase weighting of the feeding network without the variable gain amplifier and the phase shifter.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering, in particular to an antenna complex weight feed network based on dual time modulation. Background technique [0002] Regardless of whether it is in the military field or in the civilian field, the future wireless system is developing rapidly in the direction of integration and intelligence. Antennas are key devices that determine the functions and performance of wireless systems. The increasing application requirements of future wireless systems bring new challenges and opportunities to antennas. Driven by application requirements, unconventional antenna arrays and multi-mode antenna units have become research hotspots in antenna technology. This type of antenna includes various new arrays with important application prospects, such as antenna arrays with element-level pattern diversity, electronically controllable phase center antenna arrays, phased arrays with unconventional structu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q23/00H01Q1/50
CPCH01Q1/50H01Q23/00
Inventor 吴文陈峤羽张金栋郭欣方大纲
Owner NANJING UNIV OF SCI & TECH
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