T-shaped antenna added with inductor

Abstract

The utility model discloses a T-shaped antenna added with an inductor, which relates to the technical field of antennas and comprises a PCB (printed circuit board), an antenna oscillator assembly electrically connected onto the PCB, a coaxial line electrically connected with the antenna oscillator assembly and a matching inductor electrically connected between the antenna oscillator assembly and the coaxial line, and the matching inductor is assembled on the PCB. According to the technical scheme provided by the utility model, the independent matching position is designed on the PCB to assemble the matching inductor, and the matching inductor is connected in series between the antenna oscillator assembly and the coaxial line, so that the technical problem of how to shorten the physical length of the antenna oscillator in the T-shaped antenna while maintaining the high performance of the T-shaped antenna is solved; the T-shaped antenna can maintain good signal receiving and transmitting capability when the physical space is limited, so that the T-shaped antenna can be suitable for more application environments.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, specifically to a T-type antenna with an inductor. Background Technology

[0002] A dipole antenna, also known as a symmetrical dipole antenna, is widely used in various wireless communication systems. It consists of a pair of symmetrically placed conductors (antenna elements), with their ends connected to a feed line (such as a coaxial cable), forming a symmetrical structure. When current flows through these two conductors, a changing electromagnetic field is generated between them. This changing electromagnetic field radiates electromagnetic waves, thus enabling wireless communication.

[0003] In the resonant state (the state where the frequency of the dipole antenna matches the frequency of the transmitted or received electromagnetic wave), the dipole antenna exhibits the best radiation efficiency and directivity. At this state, the dipole antenna can more effectively radiate or receive electromagnetic waves, thus achieving higher communication efficiency. Therefore, to maintain the resonant state (high-performance state) of the dipole antenna, it is necessary to ensure that the length of the antenna element in the dipole antenna satisfies a certain relationship with the wavelength of the electromagnetic wave. Specifically, the physical length of the antenna element in a dipole antenna is usually designed to be half or a quarter of the wavelength of the electromagnetic wave. However, in actual operation, the actual physical length of the antenna element in the dipole antenna will be relatively long, occupying a significant amount of space.

[0004] Therefore, how to shorten the physical length of the antenna element in the dipole antenna while maintaining the resonant state of the dipole antenna has become the key technical problem to be solved in this scheme. Utility Model Content

[0005] The purpose of this invention is to provide a T-type antenna with added inductance, which solves the technical problem of how to shorten the physical length of the antenna element in the T-type antenna while maintaining its high performance. This allows the T-type antenna to maintain good signal reception and transmission capabilities even when physical space is limited, making it suitable for more application environments.

[0006] To achieve the above objectives, this utility model proposes a T-shaped antenna with an inductor, comprising a PCB board, an antenna vibrator assembly electrically connected to the PCB board, a coaxial line electrically connected to the antenna vibrator assembly, and a matching inductor electrically connected between the antenna vibrator assembly and the coaxial line, wherein the matching inductor is assembled on the PCB board.

[0007] Furthermore, the antenna vibrator assembly includes a first antenna vibrator and a second antenna vibrator, and the first antenna vibrator and the second antenna vibrator are fixedly connected to the PCB board through a first exposed copper area and a second exposed copper area, respectively.

[0008] Furthermore, the coaxial cable includes an inner conductor fixedly connected to the third exposed copper area and an outer conductor fixedly connected to the fourth exposed copper area;

[0009] The inner conductor is electrically connected to the first antenna vibrator, and the outer conductor is electrically connected to the second antenna vibrator.

[0010] Furthermore, both the inner conductor and the outer conductor are connected to the PCB board.

[0011] Furthermore, the matching inductor is connected in series between the inner conductor and the first antenna element.

[0012] Furthermore, the connection point between the inner conductor and the third exposed copper area is the feed point of the T-type antenna.

[0013] Furthermore, an IPEX connector is fitted to the end of the coaxial cable away from the PCB board.

[0014] Furthermore, the inner conductor is made of any one of conductive polymer materials, metallic conductive materials, or composite conductive materials;

[0015] The outer conductor is a metal braided mesh.

[0016] Furthermore, the antenna vibrator assembly is made of metal wire.

[0017] Furthermore, the third exposed copper area and the fourth exposed copper area are respectively located in different areas of the PCB board.

[0018] The beneficial effects of this utility model are as follows:

[0019] (1) By using a PCB board to connect the antenna vibrator assembly of the T-type antenna to the coaxial line, the electrical connection between the antenna vibrator assembly and the coaxial line in the T-type antenna becomes more stable and reliable;

[0020] (2) By connecting an inductor in series between the first antenna element of the T-type antenna and the inner conductor of the coaxial line, the reflection and loss of the signal between the antenna element assembly and the coaxial line are reduced, thereby improving the stability and efficiency of signal transmission.

[0021] (3) By connecting an inductor in series between the first antenna element of the T-type antenna and the inner conductor of the coaxial line, the current distribution of the T-type antenna is changed, the electrical length of the T-type antenna is extended, and the physical length of the antenna element assembly of the T-type antenna is shortened while maintaining the high performance of the T-type antenna. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2This is a schematic diagram of the exposed copper area of ​​the PCB board of this utility model.

[0024] The attached diagram is labeled as follows: 1. First antenna element; 2. First exposed copper area; 3. Second exposed copper area; 4. Second antenna element; 5. Matching inductor; 6. Third exposed copper area; 7. Fourth exposed copper area; 8. Coaxial cable; 9. IPEX connector. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] This utility model proposes a T-shaped antenna with an inductor, including a PCB board, an antenna vibrator assembly electrically connected to the PCB board, a coaxial line 8 electrically connected to the antenna vibrator assembly, and a matching inductor 5 electrically connected between the antenna vibrator assembly and the coaxial line 8, wherein the matching inductor 5 is assembled on the PCB board.

[0029] Preferably, the PCB board serves as the support and electrical connection platform for the T-shaped antenna, enabling electrical connections between the antenna vibrator assembly, the coaxial cable 8, and the matching inductor 5. This ensures efficient and stable signal transmission from the T-shaped antenna while also guaranteeing the stability and reliability of the physical connection between the antenna vibrator assembly and the coaxial cable 8.

[0030] Preferably, the antenna vibrator assembly consists of two metal wires with a diameter of 1 mm, which are the main radiating elements of the T-type antenna and are responsible for transmitting and receiving signals in a specific frequency band.

[0031] Preferably, the antenna vibrator assembly is covered with a heat shrink tubing to protect it and prevent it from rusting.

[0032] Preferably, at the transmitting end, the radio frequency signal generated by the signal source (such as a transmitter) is transmitted to the antenna vibrator assembly via the coaxial cable 8.

[0033] Preferably, at the receiving end, the radio frequency signal received by the antenna vibrator assembly is also transmitted back to the signal source (such as the receiver) via the coaxial cable 8 for processing.

[0034] Furthermore, the antenna vibrator assembly includes a first antenna vibrator 1 and a second antenna vibrator 4, which are fixedly connected to the PCB board via a first exposed copper area 2 and a second exposed copper area 3, respectively.

[0035] Preferably, the first antenna element 1 and the second antenna element 4 are parallel, of equal length, and symmetrically arranged on both sides of the coaxial line 8.

[0036] Preferably, the first antenna element 1 is fixed to the first exposed copper area 2 on the PCB board by welding, and the second antenna element 4 is fixed to the second exposed copper area 3 on the PCB board by welding, so as to ensure a stable and reliable electrical connection.

[0037] Preferably, the positions of the first exposed copper area 2 and the second exposed copper area 3 on the PCB board can ensure that the first antenna element 1 and the second antenna element 4 are horizontally and symmetrically soldered on both sides of the PCB board.

[0038] Furthermore, the coaxial cable 8 includes an inner conductor fixedly connected to the third exposed copper area 6 and an outer conductor fixedly connected to the fourth exposed copper area 7;

[0039] The inner conductor is electrically connected to the first antenna element 1, and the outer conductor is electrically connected to the second antenna element 4.

[0040] Preferably, the inner conductor of the coaxial line 8 is located at the center of the coaxial line 8, forming the inner core of the coaxial line 8. It is soldered to the third exposed copper area 6 of the PCB board and serves as the feed part of the T-type antenna, responsible for transmitting signals.

[0041] Preferably, the outer conductor of the coaxial cable 8 surrounds the surface of the inner conductor, forming an outer shielding layer for the coaxial cable 8, and is soldered to the fourth exposed copper area 7 of the PCB board.

[0042] Preferably, the inner conductor of the coaxial line 8 is electrically connected to the first antenna element 1 to form a transmission path for the antenna signal, and the outer conductor of the coaxial line 8 is electrically connected to the second antenna element 4 and grounded. In this connection method, the balanced feeding and grounding of the T-type antenna are achieved.

[0043] Furthermore, both the inner and outer conductors are connected to the PCB board.

[0044] Furthermore, the matching inductor 5 is connected in series between the inner conductor and the first antenna element 1.

[0045] Furthermore, the connection point between the inner conductor and the third exposed copper region 6 is the feed point of the T-type antenna.

[0046] Preferably, the inner conductor is welded to the third exposed copper area 6, and the feed point is the main input and output for the T-type antenna to receive and transmit signals.

[0047] Preferably, a separate matching bit is designed on the PCB board for assembling the matching inductor 5.

[0048] Preferably, one end of the matching inductor 5 is electrically connected to the first antenna element 1, and the other end is electrically connected to the inner conductor of the coaxial line 8. It is connected in series between the first antenna element 1 and the inner conductor of the coaxial line 8 to extend the electrical length of the T-type antenna. This can shorten the physical length of the first antenna element 1 and the second antenna element 4 of the T-type antenna while maintaining the high performance of the T-type antenna, so that the T-type antenna can still play a good role in a space with limited physical length.

[0049] Preferably, the matching inductor 5 can also help adjust the impedance of the T-type antenna, so that the T-type antenna can better match the impedance of the signal transmission line, thereby improving the signal transmission efficiency.

[0050] Furthermore, the end of the coaxial cable 8 furthest from the PCB board is fitted with an IPEX connector 9.

[0051] Preferably, the IPEX connector 9 is a small, easy-to-connect RF connector used to connect the T-type antenna to other devices (such as drones) to transmit signals.

[0052] Furthermore, the inner conductor can be made of any one of conductive polymer materials, metallic conductive materials, or composite conductive materials;

[0053] The outer conductor is a metal braided mesh.

[0054] Preferably, the inner conductor of the coaxial line 8 is the inner core of the coaxial line 8, which is the core of the signal transmission of the coaxial line 8 and has high conductivity.

[0055] Furthermore, the antenna vibrator assembly is made of metal wire.

[0056] Preferably, the first antenna element 1 is made of metal wire, and the second antenna element 4 is made of metal wire.

[0057] Furthermore, the third exposed copper area 6 and the fourth exposed copper area 7 are respectively located in different areas of the PCB board.

[0058] The specific working process of this utility model:

[0059] When receiving signals, when external electromagnetic waves (such as radio signals) propagate near the T-type antenna, the electromagnetic waves induce an electromotive force (EMF) on the antenna vibrator assembly. Since the first antenna vibrator 1 is electrically connected to the inner conductor of the coaxial line 8, the induced EMF is transmitted to the inner conductor of the coaxial line 8. The matching inductor 5 plays the role of impedance matching here, ensuring that the signal received by the T-type antenna can be efficiently transmitted to the coaxial line 8, reducing signal reflection and loss. The outer conductor of the coaxial line 8 serves as ground, forming a complete signal transmission path together with the inner conductor of the coaxial line 8. Finally, the signal is transmitted through the IPEX connector 9 to other devices (such as drones) connected to the T-type antenna for processing.

[0060] When transmitting a signal, the signal is transmitted from other devices connected to the T-type antenna to the coaxial line 8 via the IPEX connector 9; the signal is transmitted on the inner conductor of the coaxial line 8 and transmitted to the first antenna element 1 through the matching inductor 5; the first antenna element 1 radiates the signal in the form of electromagnetic waves, completing the signal transmission process; the second antenna element 4 and the outer conductor of the coaxial line 8 serve as ground here, providing the necessary circuit for signal transmission.

[0061] Regarding the physical lengths of the first antenna element 1 and the second antenna element 4 in the T-type antenna, before adding the matching inductor 5 (27nH), the lengths of the first antenna element 1 and the second antenna element 4 of the T-type antenna are both approximately 67mm. Furthermore, both the first antenna element 1 and the second antenna element 4 are protected by heat-shrink tubing. Therefore, before adding the matching inductor 5, the total length of the T-type antenna is the sum of the lengths of the first antenna element 1 (67mm), the second antenna element 4 (67mm), and the heat-shrink tubing, approximately 145mm. While maintaining the high performance of the T-type antenna, adding the matching inductor 5 reduces the total length of the T-type antenna to approximately 62mm. This significantly reduces the length of the first antenna element 1 and the second antenna element 4 by more than half, greatly reducing the usable space of the T-type antenna. This allows the T-type antenna to maintain good signal reception and transmission capabilities even when physical space is limited, making it suitable for a wider range of applications.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A T-type antenna with added inductance, characterized in that, The device includes a PCB board, an antenna vibrator assembly electrically connected to the PCB board, a coaxial line (8) electrically connected to the antenna vibrator assembly, and a matching inductor (5) electrically connected between the antenna vibrator assembly and the coaxial line (8), wherein the matching inductor (5) is assembled on the PCB board.

2. The T-type antenna with added inductance according to claim 1, characterized in that, The antenna vibrator assembly includes a first antenna vibrator (1) and a second antenna vibrator (4). The first antenna vibrator (1) and the second antenna vibrator (4) are fixedly connected to the PCB board through a first exposed copper area (2) and a second exposed copper area (3), respectively.

3. The T-type antenna with added inductance according to claim 2, characterized in that, The coaxial cable (8) includes an inner conductor fixedly connected to the third exposed copper area (6) and an outer conductor fixedly connected to the fourth exposed copper area (7); The inner conductor is electrically connected to the first antenna element (1), and the outer conductor is electrically connected to the second antenna element (4).

4. The T-type antenna with added inductance according to claim 3, characterized in that, Both the inner conductor and the outer conductor are connected to the PCB board.

5. A T-type antenna with added inductance according to claim 4, characterized in that, The matching inductor (5) is connected in series between the inner conductor and the first antenna element (1).

6. The T-type antenna with added inductance according to claim 3, characterized in that, The connection point between the inner conductor and the third exposed copper area (6) is the feed point of the T-type antenna.

7. A T-type antenna with added inductance according to claim 3, characterized in that, The coaxial cable (8) is fitted with an IPEX connector (9) at the end away from the PCB board.

8. A T-type antenna with added inductance according to claim 3, characterized in that, The inner conductor is made of any one of conductive polymer materials, metallic conductive materials, or composite conductive materials. The outer conductor is a metal braided mesh.

9. A T-type antenna with added inductance according to claim 1, characterized in that, The antenna vibrator assembly is made of metal wire.

10. A T-type antenna with added inductance according to claim 4, characterized in that, The third exposed copper area (6) and the fourth exposed copper area (7) are respectively located in different areas of the PCB board.

Images