An antenna element structure with filtering effect

Abstract

The application discloses an antenna oscillator structure with a filtering effect, comprising a radiation oscillator arm and a feed balun, and comprising an electric coupling unit and a high-resistance wire unit; any one of the electric coupling unit and the high-resistance wire unit is arranged on the radiation oscillator arm and the feed balun matched with each other; the high-resistance wire unit and the electric coupling unit arranged on the radiation oscillator arm and the feed balun matched with each other form a frequency conversion filtering circuit. The application can avoid that the high-frequency radiation unit of the antenna causes the distortion of a low-frequency directional diagram due to common-mode resonance of the low-frequency, and improve the radiation performance of the low-frequency unit in the antenna.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to an antenna vibrator structure with a filtering effect. Background Technology

[0002] With the rapid development of the communications industry, the frequency bands used for base station antennas continue to expand, requiring coexistence in various heterogeneous frequency environments within the 600M-Sub6G range. Currently, the most mainstream antenna products use two major frequency bands: low frequency (690-960M) and high frequency (1695-2690M).

[0003] However, the compact space in antenna products causes severe mutual interference between different frequency arrays. In particular, the high-frequency radiating elements of the antenna can cause common-mode resonance at low frequencies, resulting in distortion of the low-frequency radiation pattern. This leads to drastic fluctuations in many key indicators such as gain, lobe width, and front-to-back ratio, which has a huge impact on low-frequency radiation performance.

[0004] Therefore, there is a need for an antenna vibrator structure with filtering effect to effectively suppress energy in a specified frequency band during the transmission and radiation path of the high-frequency vibrator, thereby significantly improving the radiation performance of the low-frequency elements in the antenna. Summary of the Invention

[0005] To address the technical problem that high-frequency radiating elements in antennas can cause distortion of the low-frequency radiation pattern due to common-mode resonance, this invention provides the following specific technical solution:

[0006] This invention provides an antenna dipole structure with filtering effect, including a radiating dipole arm and a feed balun, comprising:

[0007] Electrically coupled units and high-resistance line units;

[0008] The radiating oscillator arm is provided with either the electrical coupling unit or the high-resistivity wire unit;

[0009] The power supply balun is provided with one of the electrical coupling units and the high-resistance line units;

[0010] The high-impedance line unit and the electrical coupling unit form a frequency conversion filter circuit in the antenna vibrator structure.

[0011] The antenna vibrator structure with filtering effect provided by this invention sets up electrical coupling units and high-impedance line units on the radiating vibrator arm and the feed balun in the antenna vibrator structure, respectively, to construct a multi-level equivalent LC series-parallel structure. After the vibrator assembly is completed, the frequency conversion filter circuit is composed of the electrical coupling units and the high-impedance line units, which effectively suppresses the energy of the specified frequency band in the transmission and radiation path of the high-frequency vibrator, significantly improves the radiation performance of the low-frequency unit, and makes the overall performance of the low-frequency unit closer to a pure low-frequency environment.

[0012] In some embodiments, the antenna vibrator structure with filtering effect provided by the present invention further includes a dielectric substrate, which is connected to the feed balun for fixing the antenna vibrator structure, and the structural electrical length of the high-impedance line element is equivalent to 0.2 to 0.8 times the wavelength in the resonant frequency band of the dielectric substrate.

[0013] The antenna vibrator structure with filtering effect provided by the present invention further limits the structural length of the high-impedance line unit by the equivalent wavelength of the dielectric substrate, so that when the structural length is within the limited range, it is easier to make the multi-stage equivalent LC series-parallel structure resonate in the target filtering frequency band, so as to achieve the filtering effect of the target frequency band.

[0014] In some embodiments, the high-resistance line unit includes any one of straight, curved, and bent types;

[0015] The electrical coupling unit includes either a parallel plate capacitor type or a planar interdigital type.

[0016] The antenna vibrator structure with filtering effect provided by this invention is adapted to antenna vibrator structures of different sizes and shapes by setting up various high-impedance line units such as straight, curved and bent types, as well as planar capacitor type and planar interdigital type electrical coupling units, so as to meet the different requirements of antenna vibrator structure shape in different actual scenarios.

[0017] In some embodiments, the equivalent circuit of the electrically coupled unit includes an inductive element;

[0018] The equivalent circuit of the high-resistivity line unit includes several parallel capacitive elements, and an inductive element is connected in series between the several parallel capacitive elements.

[0019] The present invention discloses a simplified structure of an antenna vibrator structure with filtering effect, which is a multi-stage equivalent LC series-parallel structure with an electrical coupling unit and a high-impedance line unit. The filtering effect of the antenna vibrator structure is achieved by setting an inductive element in the electrical coupling unit and the high-impedance line unit in combination.

[0020] In some embodiments, the equivalent circuit disposed on the radiating oscillator arm further includes an equivalent inductive element of the radiating oscillator arm.

[0021] The antenna vibrator structure with filtering effect provided by the present invention is based on the simplified equivalent circuit of the inductive electric coupling unit and the equivalent circuit of the high-impedance line unit with inductive elements connected in series between several parallel capacitive elements. The equivalent inductive element of the radiating vibrator arm is set in cooperation with the electric coupling unit and the high-impedance line unit, thereby increasing the filtering effect without affecting the conventional radiation function of the antenna vibrator.

[0022] In some embodiments, when the electrical coupling unit is provided on the radiating dipole arm, the equivalent circuit provided on the radiating dipole arm also includes the equivalent capacitive element of the circuit traces in the electrical coupling unit.

[0023] The antenna vibrator structure with filtering effect provided by the present invention simplifies the design of the circuit structure of the radiating vibrator arm by setting only the equivalent circuit of the inductive electric coupling unit and the capacitive equivalent circuit of the circuit trace on the radiating vibrator arm, and comprehensively considers the influence of the capacitive equivalent circuit of the circuit trace on the electric coupling effect of the electric coupling unit.

[0024] In some embodiments, the equivalent circuit disposed on the feed balun also includes the equivalent inductance of the feed balun.

[0025] In some embodiments, the electrical coupling unit and the high-resistance line unit are respectively disposed on the mutually matched radiating oscillator arm and the feed balun via printed circuits;

[0026] The frequency conversion filter circuit is formed by welding the high-resistance wire unit and the electrical coupling unit disposed on the mutually matched radiating oscillator arm and the feed balun.

[0027] The antenna vibrator structure with filtering effect provided by this invention uses printed circuits to print the electrical coupling unit and the high-impedance line unit on the radiating vibrator arm and the feed balun, respectively. The circuit is connected between the matching high-impedance line unit and the electrical coupling unit by soldering. In the production process, the antenna vibrator structure and the frequency conversion filter circuit are produced separately, so that the production processes of the filter circuit and the antenna vibrator structure are independent and do not affect each other. At the same time, the printed circuit method avoids the unnecessary filter components from affecting the antenna radiation efficiency during the actual use of the antenna vibrator structure, and is suitable for actual antenna use scenarios.

[0028] In some embodiments, a plurality of the electrical coupling units or a plurality of the high-resistivity wire units are respectively disposed at the same position on the corresponding radiating oscillator arms.

[0029] The antenna vibrator structure with filtering effect provided by the present invention further discloses that when multiple radiating vibrator arms are provided with electrical coupling units or high-impedance line units to form a frequency conversion filter circuit, the electrical coupling units or high-impedance line units are set at the same position as the radiating vibrator arms to form a symmetrical structure. The design of the symmetrical structure reduces the impact of the frequency conversion filter circuit on the radiation function of the antenna vibrator structure.

[0030] In some embodiments, a plurality of the electrical coupling units or a plurality of the high-resistivity wire units are respectively disposed on the diagonal of the corresponding radiating oscillator arm.

[0031] The antenna element structure with filtering effect provided by this invention can be directly applied to the element-feed balun and radiating arm of existing antenna structures. Compared with adding additional filtering features, it can effectively reduce the design size. The multi-stage LC cascade structure effectively achieves broadband bandstop characteristics and effectively reduces the impact of this component on low frequencies.

[0032] In some embodiments, according to another aspect of the invention, the invention also provides an antenna with filtering effect, including the antenna element structure described above.

[0033] This invention provides an antenna vibrator structure with filtering effect, which includes at least one of the following technical effects:

[0034] (1) Electrical coupling units and high-impedance line units are set on the radiating dipole arm and the feed balun in the antenna dipole structure respectively to construct a multi-level equivalent LC series-parallel structure. After the dipole assembly is completed, the frequency conversion filter circuit is composed of electrical coupling units and high-impedance line units to effectively suppress the energy of the specified frequency band in the transmission and radiation path of the high-frequency dipole, significantly improve the radiation performance of the low-frequency unit, and make the overall performance of the low-frequency unit closer to the pure low-frequency environment.

[0035] (2) It can be directly applied to the dipole-fed balun and radiating dipole arm of the existing antenna structure. Compared with adding additional filtering features, it can effectively reduce the design size. The multi-stage LC cascade structure effectively realizes the broadband band-stop characteristics and effectively reduces the impact of this component on low frequencies;

[0036] (3) The structural length of the high impedance line unit is further limited by the equivalent wavelength of the dielectric substrate, so that when the structural length is within the limited range, the multi-level equivalent LC series and parallel structure can resonate in the target filtering frequency band to achieve the filtering effect of the target frequency band.

[0037] (4) By setting up various high-impedance line units such as straight line, curved line and bent line, as well as setting up planar capacitor type and planar interdigital electric coupling unit, different sizes and shapes of antenna elements can be adapted to different antenna elements in different actual scenarios with different requirements for the shape of the antenna element structure.

[0038] (5) A simplified structure of an electric coupling unit and a high-impedance line unit in a multi-level equivalent LC series-parallel structure is disclosed. The filtering effect of the antenna vibrator structure is achieved by setting the electric coupling unit of the inductive element and the high-impedance line unit in combination.

[0039] (6) Based on the simplified equivalent circuit of the inductive electric coupling unit and the equivalent circuit structure of the high-impedance line unit with inductive elements connected in series between several parallel capacitive elements, an equivalent inductive element of the radiating dipole arm that cooperates with the electric coupling unit and the high-impedance line unit is set to increase the filtering effect without affecting the conventional radiation function of the antenna dipole.

[0040] (7) By setting only the equivalent circuit of the inductive electric coupling unit and the capacitive equivalent circuit of the circuit trace on the radiating dipole arm, the simplified design of the circuit structure of the radiating dipole arm in the antenna dipole structure is realized, and the influence of the capacitive equivalent circuit of the circuit trace on the electric coupling effect of the electric coupling unit is comprehensively considered.

[0041] (8) The electrical coupling unit and the high impedance line unit are printed on the radiating dipole arm and the feed balun respectively by means of printed circuit. The circuit is connected between the matching high impedance line unit and the electrical coupling unit by soldering. In the production process, the antenna dipole structure and the frequency conversion filter circuit are produced separately, so that the production process of the filter circuit and the antenna dipole structure are independent of each other and do not affect each other. At the same time, the printed circuit method avoids the unnecessary filter components from affecting the antenna radiation efficiency in the actual use of the antenna dipole structure, and adapts to the actual antenna use scenario.

[0042] (9) Further disclosed that when an electric coupling unit or a high-impedance line unit is set on multiple radiating dipole arms to form a frequency conversion filter circuit, the electric coupling unit or the high-impedance line unit is set at the same position as the radiating dipole arm to form a symmetrical structure. The design of the symmetrical structure reduces the impact of the frequency conversion filter circuit on the radiation function of the antenna dipole structure. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is an example diagram of the radiating arm in an antenna vibrator structure with filtering effect according to the present invention, in which a high-impedance line element is set on the radiating arm;

[0045] Figure 2 This is an example diagram of the feed balun in an antenna vibrator structure with filtering effect according to the present invention, in which an electrical coupling unit is set on the feed balun;

[0046] Figure 3 This is an example diagram of the radiating arm in an antenna vibrator structure with filtering effect according to the present invention, in which an electrical coupling unit is set on the radiating arm;

[0047] Figure 4 This is an example diagram of the feed balun when a high-impedance line element is set on the feed balun in an antenna vibrator structure with filtering effect according to the present invention;

[0048] Figure 5 This is a schematic diagram of a conventional antenna vibrator structure according to the present invention;

[0049] Figure 6 This is an example diagram of an antenna vibrator structure with filtering effect according to the present invention, in which an electrical coupling unit is set on the radiating vibrator arm and a high-impedance line unit is set on the feed balun.

[0050] Figure 7 This is an example diagram of an antenna vibrator structure with filtering effect according to the present invention, in which a high-impedance line element is set on the radiating vibrator arm and an electrical coupling element is set on the feed balun.

[0051] Figure 8 A schematic diagram of a multi-frequency array environment after applying the present invention, which provides an antenna vibrator structure with filtering effect;

[0052] Figure 9 The low-frequency radiation pattern in a pure low-frequency environment after applying the antenna vibrator structure with filtering effect provided by this invention;

[0053] Figure 10 The high-frequency and low-frequency radiation patterns of the antenna structure after applying the antenna vibrator structure with filtering effect provided by the present invention;

[0054] Figure 11 A comparison of gain curves after applying the antenna vibrator structure with filtering effect provided by this invention.

[0055] The numbers in the diagram are: high resistance line unit-100, electrical coupling unit-200, dielectric substrate-300, radiating oscillator arm-400, and feed balun-500. Detailed Implementation

[0056] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0057] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or sets.

[0058] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, components with the same structure or function are shown only schematically, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one."

[0059] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0060] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0062] In one embodiment of the present invention, an antenna vibrator structure with filtering effect is provided. The antenna vibrator structure includes a radiating vibrator arm and a feed balun, as well as an electrical coupling unit and a high-impedance line unit. Either the electrical coupling unit or the high-impedance line unit is disposed on the radiating vibrator arm, and the other electrical coupling unit or the high-impedance line unit is disposed on the feed balun. The high-impedance line unit and the electrical coupling unit form a frequency conversion filter circuit in the antenna vibrator structure.

[0063] For example, the antenna vibrator structure disclosed in this application includes several sets of corresponding radiating dipole arms and feed baluns, and a frequency conversion filter circuit is installed on each set of radiating dipole arms and feed baluns, wherein, for example Figure 1 and Figure 2 As shown, a high-resistivity wire unit 100 can be set on the radiating oscillator arm, and an electrical coupling unit 200 can be set on the corresponding feed balun, or as shown in the diagram. Figure 3 and Figure 4 As shown, an electrical coupling unit 200 is set on the radiating oscillator arm, and a high-resistivity wire unit 100 is set on the corresponding feed balun.

[0064] Figure 1 This is an example diagram of a radial dipole arm with high-resistivity wire elements. Figure 2 This is an example diagram of a feed balun with an electrical coupling unit 200. Figure 3This is an example diagram of a radial dipole arm with an electrical coupling unit 200 installed. Figure 4 Example diagram of a feed balun with a high-resistivity line element 100 on it.

[0065] in, Figures 1-4 The antenna structures shown in the examples are all planar four-arm dipoles. In this application, the antenna structure can also be set to other forms, such as planar two-arm dipoles, etc. The type of antenna structure does not affect the implementation of this application.

[0066] The antenna vibrator structure with filtering effect provided in this embodiment sets up electrical coupling units and high-impedance line units on the radiating vibrator arm and the feed balun in the antenna vibrator structure, respectively, to construct a multi-level equivalent LC series-parallel structure. After the vibrator assembly is completed, the frequency conversion filter circuit is composed of the electrical coupling units and the high-impedance line units, which effectively suppresses the energy of the specified frequency band in the transmission and radiation path of the high-frequency vibrator, significantly improves the radiation performance of the low-frequency unit, and makes the overall performance of the low-frequency unit closer to a pure low-frequency environment.

[0067] In one embodiment, such as Figure 5 As shown, Figure 5 The diagram shows the structure of a conventional antenna vibrator. In addition to the radiating vibrator arm 400 and the feed balun 500, the antenna vibrator structure disclosed in this application also includes a dielectric substrate 300. The electrical length of the high-resistivity line unit is equivalent to 0.2 to 0.8 times the wavelength in the resonant frequency band of the dielectric substrate.

[0068] The antenna vibrator structure with filtering effect provided in this embodiment further limits the structural length of the high-impedance line unit by the equivalent wavelength of the dielectric substrate. When the structural length is within the limited range, it is easier to make the multi-stage equivalent LC series-parallel structure resonate in the target filtering frequency band, so as to achieve the filtering effect of the target frequency band.

[0069] In one embodiment, the high-resistance wire unit and the electrical coupling unit are not limited to those described above. Figures 1-4 The high-resistance line unit 100, as shown in the diagram, includes any one of the following types: straight, curved, and bent. A straight high-resistance line unit is a PCB circuit structure in which the resistance line structure is printed in a straight line shape during the circuit printing process. A curved high-resistance line unit is a PCB circuit structure in which the resistance line structure is printed in a curved shape during the circuit printing process. A bent high-resistance line unit is a PCB circuit structure in which the resistance line structure is printed in a bent shape during the circuit printing process. Figure 1 and Figure 4 All medium-high resistance line units 100 are configured as bent high resistance line units.

[0070] Electrical coupling units include either planar capacitor type or planar interdigital type. Planar interdigital type electrical coupling units refer to the transmission lines of the electrical coupling structure being set with interdigitated lines in a ten-finger cross structure to achieve the electrical coupling effect, which facilitates the reduction of antenna structure size and operating frequency band, and reduces parasitic inductance. Planar capacitor type electrical coupling units achieve the electrical coupling effect by setting capacitor elements on the surface of the antenna structure. In the process of selecting the structure of electrical coupling units, the antenna structure required by the antenna operating scenario and the operating frequency band can be comprehensively selected.

[0071] In one embodiment, such as Figure 6 and Figure 7 As shown, where, Figure 6 An example diagram of a structure in which an electrical coupling unit 300 is installed on the radiating oscillator arm and a high-resistivity wire unit 100 is installed on the feed balun. Figure 7 An example diagram of a structure in which a high-resistivity line element 200 is set on the radiating oscillator arm and an electrical coupling element 200 is set on the feed balun. Figure 6 and Figure 7 In the antenna structure, the different positions of the capacitive and inductive structures in the components result in slightly different decoupling characteristics. Therefore, the appropriate radiating dipole arm and feed balun structure can be selected according to the actual decoupling requirements.

[0072] The equivalent circuit of the electrical coupling unit 200 includes an inductive element L. arm1 The equivalent circuit of the high-resistivity line unit 100 includes several parallel capacitive elements C. 21 ~C 2n Several capacitive elements C connected in parallel 21 ~C 2n Each of them is connected in series with an inductive element, which includes L 21 ~L 2n The equivalent circuit set on the radiating arm also includes the equivalent inductive element L of the radiating arm. arm2 The equivalent circuit set on the feed balun also includes the equivalent inductance L1 of the feed balun.

[0073] The antenna vibrator structure with filtering effect provided in this embodiment is based on the simplified equivalent circuit of the inductive electro-coupling unit and the equivalent circuit structure of the high-impedance line unit, in which inductive elements are connected in series between several parallel capacitive elements. It adds an equivalent inductive element of the radiating vibrator arm that cooperates with the electro-coupling unit and the high-impedance line unit, thereby increasing the filtering effect without affecting the conventional radiation function of the antenna vibrator.

[0074] In one embodiment, such as Figure 6 As shown, when an electrical coupling unit 200 is provided on the radiating dipole arm, the equivalent circuit provided on the radiating dipole arm also includes the equivalent capacitive element C of the circuit traces in the electrical coupling unit 200. arm1When the electrical coupling unit 200 is placed on the radiating oscillator arm, the circuit traces in the electrical coupling unit 200 will affect each other, and in the equivalent circuit of the electrical coupling unit 200, they are equivalent to equivalent capacitive elements.

[0075] The antenna vibrator structure with filtering effect provided in this embodiment simplifies the design of the radiating arm circuit structure by setting only the equivalent circuit of the inductive electric coupling unit and the capacitive equivalent circuit of the circuit trace on the radiating arm, and comprehensively considers the influence of the capacitive equivalent circuit of the circuit trace on the electric coupling effect of the electric coupling unit.

[0076] In one embodiment, the electro-coupling unit 200 and the high-resistance line unit 100 are respectively disposed on a mutually matched radiating oscillator arm and a feeding balun via printed circuits. The high-resistance line unit 100 and the electro-coupling unit 200 disposed on the mutually matched radiating oscillator arm and the feeding balun form a frequency conversion filter circuit by welding.

[0077] In the antenna vibrator structure with filtering effect provided in this embodiment, the electrical coupling unit and the high-impedance line unit are printed on the radiating vibrator arm and the feed balun, respectively, by means of printed circuits. The circuit is connected between the matching high-impedance line unit and the electrical coupling unit by soldering. In the production process, the antenna vibrator structure and the frequency conversion filter circuit are produced separately, so that the production process of the filter circuit and the antenna vibrator structure is independent and does not affect each other. At the same time, the printed circuit method avoids the fact that redundant filter components will affect the antenna radiation efficiency during the actual use of the antenna vibrator structure, and is suitable for actual antenna use scenarios.

[0078] like Figures 8-11 As shown, Figure 8 This is a schematic diagram of a multi-frequency array environment after applying the antenna vibrator structure with filtering effect provided in this application. This embodiment is applicable to the problem of inter-frequency coupling between antenna structures in a multi-frequency array environment.

[0079] Figure 9 Low-frequency radiation pattern for a pure low-frequency environment designed for conventional antenna structures. Figure 10 To improve the high-frequency and low-frequency radiation pattern of the antenna structure after adding a filter unit, after... Figure 9 and Figure 10 After comparing and analyzing the frequency converter filter circuits with applicable filter structures, for the same high and low frequency array environment, Figure 10 The filtering results for low and medium frequency states are compared to Figure 9 The filtering results in the low and medium frequency states have higher dispersion, and the high frequency has less impact on the low frequency radiation, thus improving the filtering effect of the antenna array. Figure 11 A comparison chart of gain curves after adding a filter unit. Figure 11After adding a decoupled high-frequency unit, the gain effect of the low-frequency unit tends to be stable and close to the simulation result of the low-frequency unit alone. Compared with the combination of the low-frequency unit and the conventional high-frequency unit, the gain effect of the low-frequency unit after adding the decoupled high-frequency unit can be significantly improved.

[0080] Those skilled in the art will recognize that the units and steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0081] In the embodiments provided in this application, it should be understood that the disclosed antenna vibrator structure with filtering effect can be implemented in other ways. For example, the above-described embodiment of an antenna vibrator structure with filtering effect is merely illustrative. For instance, the division of modules or units is merely a logical functional division, and there may be other division methods in actual implementation.

[0082] It should be noted that the above description is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An antenna dipole structure with filtering effect, comprising a radiating dipole arm and a feed balun, characterized in that, include: Electrically coupled units and high-resistance line units; The radiating oscillator arm is provided with either the electrical coupling unit or the high-resistivity wire unit; The power supply balun is provided with one of the electrical coupling units and the high-resistance line units; The high-impedance wire unit and the electrical coupling unit form a frequency conversion filter circuit in the antenna vibrator structure; The electrical coupling unit and the high-resistance line unit are respectively disposed on the mutually matched radiating oscillator arm and the feeding balun via printed circuits; The frequency conversion filter circuit is formed by welding the high-resistance wire unit and the electrical coupling unit disposed on the mutually matched radiating oscillator arm and the feed balun.

2. The antenna vibrator structure with filtering effect according to claim 1 further includes a dielectric substrate, the dielectric substrate being connected to the feed balun for fixing the antenna vibrator structure, characterized in that, The structural electrical length of the high-resistivity line unit is equivalent to 0.2 to 0.8 times the wavelength in the resonant frequency band of the dielectric substrate.

3. The antenna element structure with filtering effect according to claim 1, characterized in that, The high-resistance line unit includes any one of the following: straight type, curved type, and bent type; The electrical coupling unit includes either a parallel plate capacitor type or a planar interdigital type.

4. The antenna element structure with filtering effect according to claim 1, characterized in that, The equivalent circuit of the electrically coupled unit includes an inductive element; The equivalent circuit of the high-resistivity line unit includes several parallel capacitive elements, and each of the parallel capacitive elements is connected in series with an inductive element.

5. The antenna vibrator structure with filtering effect according to claim 4, characterized in that, The equivalent circuit provided on the radiating dipole arm also includes the equivalent inductive element of the radiating dipole arm.

6. The antenna vibrator structure with filtering effect according to claim 5, characterized in that, When the electrical coupling unit is provided on the radiating dipole arm, the equivalent circuit provided on the radiating dipole arm also includes the equivalent capacitive element of the circuit trace in the electrical coupling unit.

7. An antenna element structure with filtering effect according to any one of claims 4, characterized in that, The equivalent circuit provided on the feed balun also includes the equivalent inductance of the feed balun.

8. An antenna dipole structure with filtering effect according to claim 1, comprising a plurality of radiating dipole arms of the same shape, characterized in that, Several of the aforementioned electrical coupling units or several of the aforementioned high-resistivity wire units are respectively disposed at the same position on the corresponding radial oscillator arms.

9. The antenna vibrator structure with filtering effect according to claim 8, characterized in that, Several of the aforementioned electrical coupling units or several of the aforementioned high-resistivity wire units are respectively disposed on the diagonal of the corresponding radiating oscillator arm.

10. An antenna with filtering effect, characterized in that, The antenna vibrator structure includes any one of claims 1 to 9.

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