A patch antenna with a flat bottom

Abstract

This utility model discloses a bottom-plane patch antenna, including a first substrate, a second substrate, a radiating layer, a first feed pin, a second feed pin, a circuit board, a signal connector, a bridge circuit, and a resistor. The circuit board is mounted on the side of the second substrate away from the first substrate using double-sided adhesive. The top end of the first feed pin is mounted on the radiating layer, and the bottom end of the first feed pin passes through the first substrate and the second substrate sequentially before being mounted on the circuit board. This bottom-plane patch antenna aims to solve problems related to gain, size, and adaptability in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of antenna technology, specifically relating to a patch antenna with a bottom plane. Background Technology

[0002] In modern wireless communication and other fields, antennas, as key components for signal transmission and reception, play a crucial role in communication quality. With the miniaturization and high performance of devices, the requirements for antenna gain, size, and adaptability are becoming increasingly stringent. Traditional antennas, in terms of gain, structural compactness, and specific frequency band adaptability, struggle to meet the precise demands of scenarios such as satellite positioning and wireless data transmission. Therefore, it is necessary to develop antennas with novel structures to optimize performance. Utility Model Content

[0003] The main purpose of this invention is to provide a patch antenna with a bottom plane, which aims to solve problems such as gain, size, and adaptability in the prior art.

[0004] To achieve the above objectives, this utility model provides a patch antenna with a bottom plane, comprising a first substrate, a second substrate, a radiating layer, a first feed pin, a second feed pin, a circuit board (PCB), a signal connector, a bridge circuit, and a resistor, wherein:

[0005] The first substrate has the radiation layer attached to one side and the second substrate attached to the other side. The circuit board is mounted on the side of the second substrate away from the first substrate using double-sided adhesive.

[0006] The top end of the first feed needle is mounted on the radiating layer, and the bottom end of the first feed needle passes through the first substrate and the second substrate in sequence before being mounted on the circuit board. The top end of the second feed needle is mounted on the radiating layer, and the bottom end of the second feed needle passes through the first substrate and the second substrate in sequence before being mounted on the circuit board.

[0007] The signal connector, the bridge circuit, and the resistor are all mounted on the circuit board.

[0008] As a further preferred embodiment of the above technical solution, the dimensions of the first substrate are 33.5mm×33.5mm×2mm, and the dimensions of the second substrate are 43mm×43mm×3mm.

[0009] As a further preferred embodiment of the above technical solution, an extension is provided at the center of each side of the radiation layer.

[0010] As a further preferred embodiment of the above technical solution, the circuit board is circular.

[0011] As a further preferred technical solution to the above technical solution, the circuit board is provided with a plurality of mounting holes (for mounting in a preset position).

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Gain and Compactness: It features high gain and a compact structure, making it suitable for miniaturized device integration and enabling efficient signal transmission and reception within a limited space.

[0014] 2. Frequency band adaptation: Precisely adapted to frequency bands around 1268MHz and 1575MHz, applicable to scenarios such as satellite navigation and specific wireless communications. Indicators such as return loss ensure signal transmission quality and reduce signal reflection and loss.

[0015] 3. Customization potential: Custom adjustments can be made to the substrate size, feed pin layout, and PCB circuit design based on different application scenarios, such as changing the center frequency and optimizing the gain direction, to meet diverse needs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] The reference numerals in the attached drawings include: 1, first substrate; 2, second substrate; 3, radiating layer; 31, extension; 4, first feed pin; 5, second feed pin; 6, circuit board; 61, mounting hole; 7, signal connector; 8, bridge; 9, resistor. Detailed Implementation

[0019] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0020] This utility model discloses a patch antenna with a bottom plane. The specific embodiments of the utility model are further described below with reference to preferred embodiments.

[0021] In the embodiments of this utility model, those skilled in the art will note that the preset positions and other features involved in this utility model can be considered as prior art.

[0022] Preferred embodiment.

[0023] like Figure 1-2As shown, this utility model provides a patch antenna with a bottom plane, including a first substrate 1, a second substrate 2, a radiating layer 3, a first feed pin 4, a second feed pin 5, a circuit board 6 (PCB), a signal connector 7, a bridge circuit 8, and a resistor 9, wherein:

[0024] The radiation layer 3 is attached to one side of the first substrate 1 and the second substrate 2 is attached to the other side of the first substrate 1. The circuit board 6 is mounted on the side of the second substrate 2 away from the first substrate 1 by double-sided adhesive.

[0025] The top end of the first feed needle 4 is mounted on the radiation layer 3, and the bottom end of the first feed needle 4 passes through the first substrate 1 and the second substrate 2 in sequence before being mounted on the circuit board 6. The top end of the second feed needle 5 is mounted on the radiation layer 3, and the bottom end of the second feed needle 5 passes through the first substrate 1 and the second substrate 2 in sequence before being mounted on the circuit board 6.

[0026] The signal connector 7, the bridge 8, and the resistor 9 are all mounted on the circuit board 6.

[0027] Specifically, the dimensions of the first substrate 1 are 33.5mm × 33.5mm × 2mm, and the dimensions of the second substrate 2 are 43mm × 43mm × 3mm.

[0028] More specifically, an extension 31 is provided at the center of each side of the radiation layer 3.

[0029] Furthermore, the circuit board 6 is circular.

[0030] Furthermore, the circuit board 6 is provided with a plurality of mounting holes 61 (for mounting in a preset position).

[0031] Regarding this utility model:

[0032] 1. Substrate and other components: The substrate serves as the basic load-bearing structure. The PCB is attached to the substrate with double-sided adhesive. The double-sided adhesive plays a role in fixing and buffering, ensuring the stability of the PCB and substrate bonding, which is conducive to stable signal transmission.

[0033] 2. Signal transmission path: The signal is input through the connector and transmitted to the PCB through the feed pin. The PCB is equipped with bridge circuits, resistors, etc. to realize the functions of signal modulation and impedance matching, so that the antenna can work efficiently at the center frequency and meet the electrical performance indicators such as return loss ≥10dB, gain (zenith direction) 2dBic (typical value), and axial ratio ≤3dB.

[0034] Component preparation and pretreatment:

[0035] 1. Substrate processing: 43×43×3mm alumina and 33.5×33.5×2mm alumina raw materials are selected and ground to make the surface smooth and flat, achieving the design dimensional accuracy and surface roughness requirements, providing a good foundation for subsequent component assembly.

[0036] 2. Preparation of components such as feed pins and PCBs: The feed pins are cleaned and pre-treated for rust prevention; the PCBs are manufactured according to design requirements, integrating components such as bridge circuits and resistors to ensure stable circuit performance; double-sided tape is cut to the appropriate size to ensure proper adhesion.

[0037] The assembly process is as follows:

[0038] 1. First step: Assemble the substrate, double-sided tape, and PCB: Apply double-sided tape (Tape4301A, Tape3502A) to the corresponding positions on the substrate surface, accurately place the PCB, and fix it with the adhesive of the double-sided tape to ensure that the PCB and the substrate are tightly attached without any misalignment or lifting.

[0039] 2. Second step: Installation of feed pins, connectors, etc.: Insert the feed pins into the corresponding interfaces on the PCB according to the design position to achieve signal transmission connection; install the connector / coaxial cable (SMP-JHD30-L) to ensure signal input and output path; finally, install the shielding cover, and use appropriate fixing methods (such as clips, adhesive, etc.) to make the shielding cover cover the key signal transmission area of ​​the antenna, and complete the overall antenna assembly.

[0040] Finally, performance testing and adjustments were performed.

[0041] 1. Testing Phase: Using specialized testing equipment, the assembled antenna is tested according to electrical performance specifications (center frequency, return loss, gain, axial ratio, etc.). Performance data of the antenna in different frequency bands is obtained using S-Parameter testing equipment and compared with design specifications.

[0042] 2. Adjustment and Optimization: If there are deviations between the test data and the design, optimization can be achieved by adjusting the feed pin position, PCB circuit parameters (such as bridge and resistor values), and the installation accuracy of the shielding cover. For example, if the return loss does not meet the requirements, the connection between the feed pin and the PCB can be fine-tuned or the PCB impedance matching circuit can be optimized until the antenna performance meets the design standards.

[0043] It is worth mentioning that the technical features such as the preset position involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial arrangement of these technical features can be adopted by conventional choices in the field, and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated in detail.

[0044] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A patch antenna with a flat bottom, characterized in that, It includes a first substrate, a second substrate, a radiating layer, a first feed pin, a second feed pin, a circuit board, a signal connector, a bridge circuit, and resistors, wherein: The first substrate has the radiation layer attached to one side and the second substrate attached to the other side. The circuit board is mounted on the side of the second substrate away from the first substrate using double-sided adhesive. The top end of the first feed needle is mounted on the radiating layer, and the bottom end of the first feed needle passes through the first substrate and the second substrate in sequence before being mounted on the circuit board. The top end of the second feed needle is mounted on the radiating layer, and the bottom end of the second feed needle passes through the first substrate and the second substrate in sequence before being mounted on the circuit board. The signal connector, the bridge circuit, and the resistor are all mounted on the circuit board.

2. The patch antenna with a bottom plane according to claim 1, characterized in that, The dimensions of the first substrate are 33.5mm × 33.5mm × 2mm, and the dimensions of the second substrate are 43mm × 43mm × 3mm.

3. A patch antenna with a bottom plane according to claim 1, characterized in that, An extension is provided in the middle of each side of the radiation layer.

4. A patch antenna with a bottom plane according to claim 1, characterized in that, The circuit board is circular.

5. A patch antenna with a bottom plane according to claim 1, characterized in that, The circuit board has several mounting holes.

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