Medium integrated suspended line filtering integrated antenna array

Abstract

The utility model relates to the technical field of microwaves, and particularly discloses a dielectric integrated suspended line filtering integrated antenna array, which comprises a stacked dielectric plate structure sequentially comprising a first auxiliary dielectric substrate, a main dielectric substrate, a second auxiliary dielectric substrate and a bottom dielectric substrate from top to bottom, the middle of the first auxiliary dielectric substrate and the middle of the second auxiliary dielectric substrate are each of a cavity structure, the periodic dielectric sheet array is arranged on the upper surface of the main dielectric substrate and comprises a left transition section, a right transition section and a middle transmission section, the coplanar waveguide is arranged on the upper surface of the bottom dielectric substrate, and the coplanar waveguide is arranged on the lower surface of the bottom dielectric substrate. Comprising a left coplanar waveguide and a right coplanar waveguide, and the coupling medium is arranged above the periodic medium sheet array and comprises an upper coupling medium sheet and a lower coupling medium sheet. According to the utility model, the coplanar waveguide, the metal impedance matching line and the periodic dielectric sheet array are ingeniously combined, so that high-efficiency, filtering and low-loss radiation of the antenna in millimeter wave and terahertz wave bands is realized.

Description

Technical Field

[0001] The utility model belongs to the field of microwave technology, and in particular relates to a dielectric integrated suspended line filtering integrated antenna array. Background Art

[0002] With the continuous advancement of wireless communication technology and the increase in application requirements, the performance requirements for antenna systems are becoming increasingly stringent. High-gain antennas can transmit and receive signals more efficiently in a specific direction, thereby increasing the communication distance and improving the signal quality; wideband characteristics can process signals in multiple frequency bands at the same time, thereby improving the flexibility and capacity of the system; filtering characteristics can filter out unwanted signals to ensure the purity of the transmission signal of the communication system in an environment of interference and noise. At the same time, as wireless communication equipment develops towards miniaturization and integration, antenna systems also need to reduce size and weight accordingly. In order to meet the needs of multi-band and multi-function, antenna systems also need to have highly integrated capabilities and be able to implement multiple functions in a compact space. In order to meet these challenges, researchers and engineers are constantly exploring new antenna technologies and design methods. Especially in the context of increasingly tight frequency resources, antenna systems must not only provide sufficient gain and bandwidth, but also have good filtering performance to effectively reduce various interferences and improve communication quality.

[0003] In recent years, scholars have proposed an end-fire frequency-scanning gradient slot antenna, the innovation of which is that the gradient slot array antenna is etched only on one inner edge. Although this design achieves far-field electromagnetic radiation and controllable directivity within the operating frequency band, the artificial surface plasmon transmission line design of a single inner edge limits the integrated filtering function of the antenna, resulting in higher metal surface transmission losses, which in turn reduces the signal-to-noise ratio. In addition, another scholar proposed a six-layer substrate design with an air cavity embedded in the center, using a cavity structure formed by two rows of metal holes to reduce leakage field losses. Although this design exhibits the performance advantages of low loss and high gain within the specified operating frequency band, it does not support the multi-angle scanning function of the beam and lacks integrated "antenna-filtering" capabilities, so its use is subject to certain limitations. Utility Model Content

[0004] The utility model aims to provide a dielectric integrated suspended line filter integrated antenna array to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dielectric integrated suspended line filter integrated antenna array, comprising:

[0007] A stacked dielectric plate structure, which includes, from top to bottom, a first auxiliary dielectric substrate, a main dielectric substrate, a second auxiliary dielectric substrate and a bottom dielectric substrate, wherein the first auxiliary dielectric substrate and the second auxiliary dielectric substrate are both provided with a cavity structure in the middle;

[0008] A periodic dielectric sheet array is arranged on the upper surface of the main dielectric substrate, including a left transition section, a right transition section and a middle transmission section;

[0009] A coplanar waveguide, arranged on the upper surface of the bottom dielectric substrate, including a left coplanar waveguide and a right coplanar waveguide;

[0010] The coupling medium is arranged above the periodic dielectric sheet array and comprises an upper coupling dielectric sheet and a lower coupling dielectric sheet.

[0011] Preferably, the left transition section and the right transition section are both composed of right-angled triangle transition sections with increasing heights and arranged periodically, and the middle transmission section is composed of a number of dielectric sheets with equal lengths and arranged evenly.

[0012] Preferably, the periodic dielectric sheet array and the lower coupling dielectric sheet, and the lower coupling dielectric sheet and the upper coupling dielectric sheet are supported by low-density foam.

[0013] Preferably, the left coplanar waveguide and the right coplanar waveguide are connected via a metal impedance matching line.

[0014] Preferably, a left SMA connector and a right SMA connector are respectively provided on both sides of the stacked dielectric plate structure, and the left SMA connector and the right SMA connector are respectively connected to the left coplanar waveguide and the right coplanar waveguide.

[0015] Preferably, a plurality of front metal short-circuit columns and a plurality of back metal short-circuit columns are respectively disposed on the other two sides of the stacked dielectric plate structure.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] (1) By cleverly combining coplanar waveguides, metal impedance matching lines and periodic dielectric sheet arrays, the antenna achieves high efficiency, filtering and low-loss radiation in the millimeter wave and terahertz bands. This design enriches the waveguide types and methods for transforming space waveguides into artificial surface plasmon polaritons (SSPPs), and provides possibilities for the wider application of plasmon metamaterials in high-end planar, integrated circuits and filtering integrated antennas.

[0018] (2) By adjusting the structural dimensions, the present invention not only realizes a multifunctional, high-efficiency and high-flexibility filter integrated antenna design, but also improves the performance of the antenna, providing new possibilities and reliable solutions for the development of wireless communication systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of the overall structure of the utility model;

[0020] Figure 2 This is one of the simulation diagrams of the utility model;

[0021] Figure 3 This is the second simulation diagram of the utility model;

[0022] Figure 4 This is the third simulation diagram of the utility model;

[0023] In the figure: 101, first auxiliary dielectric substrate; 102, main dielectric substrate; 103, second auxiliary dielectric substrate; 104, bottom dielectric substrate; 201, left transition section; 202, right transition section; 203, middle transmission section; 301, left coplanar waveguide; 302, right coplanar waveguide; 401, upper coupling dielectric sheet; 402, lower coupling dielectric sheet; 501, metal impedance matching line; 601, front metal short-circuit column; 602, back metal short-circuit column; 701, left SMA connector; 702, right SMA connector. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1-Figure 4 As shown, a dielectric integrated suspended line filter integrated antenna array comprises:

[0027] The stacked dielectric plate structure includes, from top to bottom, a first auxiliary dielectric substrate 101, a main dielectric substrate 102, a second auxiliary dielectric substrate 103 and a bottom dielectric substrate 104, wherein the middle parts of the first auxiliary dielectric substrate 101 and the second auxiliary dielectric substrate 103 are both configured as cavity structures;

[0028] By stacking multiple dielectric substrates, higher design flexibility and electrical performance optimization can be achieved. Specific electromagnetic field distribution and coupling effects can be formed between different dielectric substrates, which helps to achieve the desired frequency response and radiation characteristics.

[0029] The periodic dielectric sheet array is arranged on the upper surface of the main dielectric substrate 102, and includes a left transition section 201, a right transition section 202 and a middle transmission section 203;

[0030] The coplanar waveguide is arranged on the upper surface of the bottom dielectric substrate 104, including a left coplanar waveguide 301 and a right coplanar waveguide 302;

[0031] A coupling medium, arranged above the periodic dielectric sheet array, comprises an upper coupling dielectric sheet 401 and a lower coupling dielectric sheet 402;

[0032] The width of the lower coupling dielectric sheet 402 and the upper coupling dielectric sheet 401 is Wr=6.5-12.5 mm, the length is Lr=7.0-16.0 mm, and the period spacing is dr=15.5-25.5 mm.

[0033] In one embodiment of the present solution, the left transition section 201 and the right transition section 202 are both composed of right-angled triangle transition sections with increasing height and periodic arrangement. This design can reduce the reflection and scattering of electromagnetic waves in the transition area, thereby improving the overall transmission efficiency. The middle transmission section 203 is composed of a number of dielectric sheets of equal length and uniform arrangement. This uniformity helps to uniformly transmit electromagnetic waves in the array and reduce unnecessary reflection and scattering.

[0034] The dielectric sheet height h1 of the periodic dielectric sheet array is 3.0-9.0 mm, and the width W1 is 4.0-8.0 mm.

[0035] In one embodiment of the present solution, the periodic dielectric sheet array and the lower coupling dielectric sheet 402 , and the lower coupling dielectric sheet 402 and the upper coupling dielectric sheet 401 are supported by low-density foam.

[0036] In one embodiment of the present solution, the left coplanar waveguide 301 and the right coplanar waveguide 302 are connected via a metal impedance matching line 501;

[0037] The width of the metal impedance matching line is WL=0.5.0~4.0mm.

[0038] In one embodiment of the present solution, a left SMA connector 701 and a right SMA connector 702 are respectively provided on both sides of the stacked dielectric plate structure, and the left SMA connector 701 and the right SMA connector 702 are respectively connected to the left coplanar waveguide 301 and the right coplanar waveguide 302.

[0039] In an embodiment of the present solution, a plurality of front metal short-circuit pillars 601 and a plurality of back metal short-circuit pillars 602 are respectively disposed on the other two sides of the stacked dielectric plate structure.

[0040] Combination Figure 2-Figure 4It can be seen that the artificial surface plasmon transmission structure composed of coplanar waveguide, metal impedance matching line and periodic dielectric sheet array can effectively reduce the high loss caused by the metal conductor surface and achieve efficient energy conversion and radiation, which helps to effectively introduce electromagnetic waves from external sources into the antenna structure while maintaining low transmission loss;

[0041] The manufacturing process and integration requirements are simplified, while the metal impedance matching line ensures smooth signal transmission and reduces reflections caused by impedance mismatch;

[0042] Periodic dielectric sheet arrays are introduced. These dielectric sheets not only serve as feed lines for the antenna, coupling energy from the main transmission line to the antenna radiating elements, but their own structure and arrangement also help to achieve filtering functions, which can control the propagation mode of electromagnetic waves and achieve selective enhancement or suppression of specific frequencies.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dielectric integrated suspended line filter integrated antenna array, characterized in that: include: A stacked dielectric plate structure, comprising, from top to bottom, a first auxiliary dielectric substrate (101), a main dielectric substrate (102), a second auxiliary dielectric substrate (103) and a bottom dielectric substrate (104), wherein the middle portions of the first auxiliary dielectric substrate (101) and the second auxiliary dielectric substrate (103) are both arranged as cavity structures; A periodic dielectric sheet array is arranged on the upper surface of the main dielectric substrate (102), comprising a left transition section (201), a right transition section (202) and a middle transmission section (203); A coplanar waveguide, arranged on the upper surface of the bottom dielectric substrate (104), comprising a left coplanar waveguide (301) and a right coplanar waveguide (302); The coupling medium is arranged above the periodic dielectric sheet array and comprises an upper coupling dielectric sheet (401) and a lower coupling dielectric sheet (402).

2. The dielectric integrated suspended line filter integrated antenna array according to claim 1, characterized in that: The left transition section (201) and the right transition section (202) are both composed of right-angled triangle transition sections with increasing heights and arranged periodically, and the middle transmission section (203) is composed of a plurality of dielectric sheets with equal lengths and arranged evenly.

3. The dielectric integrated suspended line filter integrated antenna array according to claim 1, characterized in that: The periodic dielectric sheet array and the lower coupling dielectric sheet (402), and the lower coupling dielectric sheet (402) and the upper coupling dielectric sheet (401) are all supported by low-density foam.

4. The dielectric integrated suspended line filter integrated antenna array according to claim 1, characterized in that: The left coplanar waveguide (301) and the right coplanar waveguide (302) are connected via a metal impedance matching line (501).

5. The dielectric integrated suspended line filter integrated antenna array according to claim 1, characterized in that: A left SMA connector (701) and a right SMA connector (702) are respectively arranged on both sides of the stacked dielectric plate structure, and the left SMA connector (701) and the right SMA connector (702) are respectively connected to the left coplanar waveguide (301) and the right coplanar waveguide (302).

6. The dielectric integrated suspended line filter integrated antenna array according to claim 1, characterized in that: A plurality of front metal short-circuit columns (601) and a plurality of back metal short-circuit columns (602) are respectively arranged on the other two sides of the stacked dielectric plate structure.

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