Terahertz vector modulator based on waveguide coupling
A vector modulator and coupler technology, which is applied in the field of terahertz vector modulators, can solve the problems of unsatisfactory modulation accuracy of phase shifters and attenuators, unfavorable system miniaturization and integration, large size of phase shifters and attenuators, etc. problems, to achieve the effect of component miniaturization, low cost, and easy integration
Pending Publication Date: 2022-08-02
YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE HUZHOU +1
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Problems solved by technology
One is that the phase shifter and attenuator are usually large in size, which is not conducive to the miniaturization and integration of the system; the other is that the modulation accuracy of the cascaded phase shifter and attenuator cannot meet the needs of modern phased array radars
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[0028] The technical solutions in the present invention will be further described below with reference to the accompanying drawings and embodiments.
[0029] A terahertz vector modulator based on waveguide coupling, such as Figure 1-6 As shown, it includes a "T"-shaped modulator body, and the three ends of the "T"-shaped modulator body are a first waveguide coupler 1 , a second waveguide coupler 2 and a third waveguide coupler 3 respectively. The first waveguide coupler 1 , the second waveguide coupler 2 and the third waveguide coupler 3 all include two parallel straight metal waveguides, and five fixed segments are integrally connected between the two straight metal waveguides, which are fixed adjacent to each other. Coupling holes 6 are formed between the sections, and the coupling holes 6 have the same size and are symmetrically arranged between the two sections of straight metal waveguides.
[0030] The first waveguide coupler 1 includes four ports, which are respectivel...
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The invention provides a terahertz vector modulator based on waveguide coupling, which comprises a T-shaped modulator body, and the three ends of the T-shaped modulator body are respectively a first waveguide coupler, a second waveguide coupler and a third waveguide coupler. Each of the first waveguide coupler, the second waveguide coupler and the third waveguide coupler comprises two sections of parallel linear metal waveguides, a plurality of fixed sections are integrally connected between the two sections of linear metal waveguides, and coupling holes are formed between the adjacent fixed sections; a combiner is integrally connected between the second waveguide coupler and the third waveguide coupler, and the second waveguide coupler and the third waveguide coupler are respectively provided with an on-chip modulation chip. According to the invention, high amplitude and phase modulation precision can be realized, and the device has the advantages of assembly miniaturization, low cost and easy integration.
Description
technical field [0001] The invention relates to the technical field of electromagnetic functional devices, in particular to a terahertz vector modulator based on waveguide coupling. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1 to 10THz (wavelengths between 3mm and 30um), and their frequencies are between microwaves and infrared. Coinciding with infrared, it is located in an important region of the transition from macroscopic electronics to microscopic photonics in the electromagnetic spectrum. Based on its special spectral location and the inherent advantages of high frequency, large bandwidth, and strong penetration ability of terahertz waves, it has become a research hotspot for researchers from various countries and scientific research institutions around the world. As a very important cross-frontier field, terahertz waves are being explored for their research value and application prospects. In the fut...
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IPC IPC(8): G02F1/035G02F1/03G02B6/122
CPCG02F1/035G02F1/0305G02B6/122G02B2006/12147
Inventor 梁华杰谷绍康王兰周天驰杨自强张雅鑫杨梓强
Owner YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE HUZHOU