Spiral rising type onboard transmitting module

Abstract

The utility model provides a spiral rising type onboard transmitting module, which is characterized in that a main control module, a transmitting module and an antenna module are all arranged on the same dielectric substrate, and the dielectric substrate comprises a top layer and a bottom layer opposite to the top layer; the antenna module is an onboard antenna module and is printed on the top layer and the bottom layer of the dielectric substrate, the antenna main body comprises a connecting section and a plurality of radiation sections, the connecting section is connected with the connecting point of the transmitting module and the antenna feed-in points of the radiation sections, and the radiation sections comprise a plurality of first radiation sections and a plurality of second radiation sections which are inclined upwards; the multiple first radiation sections are located on the top layer of the dielectric substrate, the multiple second radiation sections are located on the bottom layer of the dielectric substrate, and every two adjacent first radiation sections are connected with one second radiation section through a contact, so that the radiation sections form a spiral rising structure, the structure does not need to occupy a large PCBA space, the radiation performance is good, signal propagation is smooth, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the field of communication technologies, and more specifically, to a spiral ascending on-board emission module. Background Art

[0002] Currently, a large amount of the spectrum in the low-frequency band is also being used, which makes the spectrum resources allocated by wireless communication systems become increasingly crowded, and the system capacity become increasingly scarce. To solve the problems of scarce system capacity and shortage of spectrum resources, researchers have turned to the broader millimeter-wave band. An antenna is the core of a communication system. How to increase the spectrum data transmission volume of the antenna is a major challenge in the development of millimeter-wave communication. The impedance matching between the antenna and the circuit is the key to ensuring the maximum power transmission between modules.

[0003] [2](M. Arsalan, A. Shamim, L. Roy, and M. Shams, “A Fully Differential Monolithic LNA With On-Chip Antenna for a Short Range Wireless Receiver, IEEE Microw. Wirel. Compon. Lett., vol. 19, no. 10, pp. 674–676, 2009, doi: 10.1109 / LMWC.2009.2029760.)

[0004] In the traditional design process, antenna engineers and circuit designers are independent of each other, and the two achieve matching through a 50Ω port impedance. However, the disadvantage of doing so is that an impedance matching network needs to be designed, and the antenna designed on the PCB also needs to be connected to the integrated circuit through wiring. The wiring greatly affects the matching performance, increases the circuit loss and wiring complexity. At the same time, at millimeter-wave frequencies, the size of the antenna is small, which is extremely suitable for integration with the chip.

[0005] In the prior art, when designing a radio frequency module, the antenna mounted on it is usually in the form of an on-board antenna. However, limited by the single-board area, it is difficult to design all indicators of the on-board antenna to be optimal, resulting in the radio frequency module being unable to achieve the best performance in different complete machine products or application environments. Summary of the Utility Model

[0006] In view of this, in order to solve the above problems, the present utility model provides a spiral ascending on-board emission module. The main control module 10, the emission module 20 and the antenna module 30 are all arranged on the same dielectric substrate. The dielectric substrate includes a top layer and a bottom layer facing away from the top layer. The antenna module 30 is an on-board antenna module 30. The antenna module 30 is printed on the top layer and the bottom layer of the dielectric substrate. The antenna body includes a connection section 33 and a plurality of radiation sections. The connection section 33 is connected to the connection point 34 of the emission module 20 and the antenna feeding point of the radiation section. The radiation section includes a plurality of first radiation sections 31 and a plurality of second radiation sections 32 that are inclined upward. The plurality of first radiation sections 31 are located on the top layer of the dielectric substrate, and the plurality of second radiation sections 32 are located on the bottom layer of the dielectric substrate. Adjacent first radiation sections 31 are connected to a second radiation section 32 through a contact point 34, so that the radiation section forms a spiral ascending structure. This structure does not need to occupy a large PCBA space, has good radiation performance, smooth signal propagation, and low cost.

[0007] A spiral ascending on-board emission module includes: a main control module 10, an emission module 20 and an antenna module 30. The emission module 20 and the antenna module 30 form a radio frequency signal path. The main control module 10 is electrically connected to the emission module 20. The emission module 20 transmits the information transmitted by the main control module 10 through the antenna module. The main control module 10, the emission module 20 and the antenna module 30 are all arranged on the same dielectric substrate. The dielectric substrate includes a top layer and a bottom layer facing away from the top layer. The antenna module 30 is an on-board antenna module 30. The antenna module 30 is printed on the top layer and the bottom layer of the dielectric substrate. The antenna body includes a connection section 33 and a plurality of radiation sections. The connection section 33 is connected to the connection point 34 of the emission module 20 and the antenna feeding point of the radiation section. The radiation section includes a plurality of first radiation sections 31 and a plurality of second radiation sections 32 that are inclined upward. The plurality of first radiation sections 31 are located on the top layer of the dielectric substrate, and the plurality of second radiation sections 32 are located on the bottom layer of the dielectric substrate. The antenna feeding point is connected to the first radiation section closest to the emission module 20. Adjacent first radiation sections 31 are connected to a second radiation section 32 through a contact point 34, so that the radiation section forms a spiral ascending structure.

[0008] In some embodiments, the antenna module 30 is located above the main control module 10 and the emission module 20, and there is no circuit wiring and no metal coverage around it, which can make the antenna module 30 away from a complex electromagnetic environment and improve the performance of the on-board antenna.

[0009] In some embodiments, the antenna module 30 is suitable for a propagation distance of 200 m with a receiver.

[0010] In some embodiments, the transmitting module 20 is a transmitting module 20 with a resonant frequency of 433 MHz.

[0011] In some embodiments, since the resonant frequency band of the antenna is determined by the effective current path length of the antenna, to adjust the operating frequency band, it is necessary to consider starting from the physical length of the antenna. The strongest signal transmission of the antenna is at 1 / 4 of the wavelength of the sine wave. Considering that interference or mutual cancellation may occur between adjacent radiation segments, the total physical length of the radiation segments will be slightly longer than the physical length. Through experiments, the total physical length of the radiation segments is denoted as: L1, and L1 is 1 / 2 of the wavelength of the sine wave. The calculation formula is as follows:

[0012] L1 = 1 / 2(λ / f)

[0013] Where λ is the speed of light and f is the resonant frequency of the transmitting module 20.

[0014] In some embodiments, the widths and lengths of the first radiation segment 31 and the second radiation segment 32 are the same.

[0015] In some embodiments, the spacing between adjacent first radiation segments 31 is the same as the spacing between adjacent second radiation segments 32, and the spacing between adjacent first radiation segments 31 or the spacing between adjacent second radiation segments 32 is greater than or equal to the width of the first radiation segment 31 or the second radiation segment 32.

[0016] Further, the spacing between adjacent first radiation segments 31 and the spacing between adjacent second radiation segments 32 are both denoted as: W2. The determinant of S11 is the input impedance of the antenna. Generally, the default input impedance of a monopole antenna is 50 ohms. When the input impedance of the designed antenna is infinitely close to 50 ohms, then S11 will approach infinitely small. On the contrary, when the input impedance deviates from 50 ohms, then S11 will deteriorate. In other words, the greater the deviation of the input impedance from 50 ohms, the worse S11 will be. By adjusting the length of W2 to change the magnitude of the input impedance of the antenna in the frequency band of the transmitting module 20, and then adjusting the S11 parameter. Through simulation calculation, when W2 is 1 mm, the transmission is relatively smooth. When it is less than 1 mm, the impedance exceeds the standard. When it is greater than 1 mm, the impedance becomes smaller and does not match the output point, and the transmission is not smooth either.

[0017] In some embodiments, the upward inclination angles of adjacent first radiation segments 31 are the same as the upward inclination angles of adjacent second radiation segments 32.

[0018] Further, when W2 is equal to the widths of the first radiation segment 31 and the second radiation segment 32, the helix angle of the formed spiral rising structure is: arctan(W2 / (πW2)), where π is the pi.

[0019] Further, when the spiral angle ranges from 5.293 degrees, the signal propagates most smoothly.

[0020] The beneficial effects of the present utility model: The present utility model provides a spiral ascending on-board emission module. The main control module 10, the emission module 20, and the antenna module 30 are all arranged on the same dielectric substrate. The dielectric substrate includes a top layer and a bottom layer facing away from the top layer. The antenna module 30 is an on-board antenna module 30. The antenna module 30 is printed on the top layer and the bottom layer of the dielectric substrate. The antenna body includes a connection section 33 and a plurality of radiation sections. The connection section 33 is connected to the connection point 34 of the emission module 20 and the antenna feeding points of the radiation sections. The radiation sections include a plurality of first radiation sections 31 and a plurality of second radiation sections 32 that are inclined upward. The plurality of first radiation sections 31 are located on the top layer of the dielectric substrate, and the plurality of second radiation sections 32 are located on the bottom layer of the dielectric substrate. Adjacent first radiation sections 31 are connected to one second radiation section 32 through a connection point 34, so that the radiation sections form a spiral ascending structure. This structure does not require a large PCBA space, has good radiation performance, smooth signal propagation, and low cost. Description of the Drawings

[0021] Figure 1 Perspective structural schematic diagram of the spiral ascending on-board emission module in the embodiment of the present utility model

[0022] Figure 2 Flow chart of the spiral ascending on-board emission module in the embodiment of the present utility model.

[0023] Reference Numerals:

[0024] Main control module 10; Emission module 20; Antenna module 30; First radiation section 31; Second radiation section 32; Connection section 33; Connection point 34. Detailed Embodiments

[0025] For the convenience of clearly describing the technical solutions of the embodiments of the present utility model, in the embodiments of the present utility model, terms such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and do not limit their sequence. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and "first" and "second" do not necessarily limit being different.

[0026] It should be noted that in the present utility model, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present utility model should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0027] In the present utility model, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b or c can represent: a, b, c, the combination of a and b, the combination of a and c, the combination of b and c, or the combination of a, b and c, where a, b and c can be single or multiple.

[0028] Embodiment:

[0029] Such as Figure 1 And Figure 2As shown in the figure, a spiral ascending on-board emission module includes: a main control module 10, an emission module 20, and an antenna module 30. The emission module 20 uses an emission module 20 with a resonance frequency of 433 MHz. The emission module 20 and the antenna module 30 form a radio frequency signal path. The main control module 10 is electrically connected to the emission module 20. The emission module 20 sends out the information transmitted by the main control module 10 through the antenna module. The main control module 10, the emission module 20, and the antenna module 30 are all arranged on the same dielectric substrate. The antenna module 30 is located above the main control module 10 and the emission module 20, and there is no circuit wiring and no metal coverage around it, which can make the antenna module 30 away from the complex electromagnetic environment and improve the performance of the on-board antenna. The antenna module 30 is suitable for a propagation distance of 200 m with the receiver. The dielectric substrate includes a top layer and a bottom layer facing away from the top layer. The antenna module 30 is an on-board antenna module 30. The antenna module 30 is printed on the top layer and the bottom layer of the dielectric substrate. The antenna body includes a connection section 33 and multiple radiation sections. The connection section 33 is connected to the connection point 34 of the emission module 20 and the antenna feeding point of the radiation section. The radiation section includes multiple first radiation sections 31 and multiple second radiation sections 32 that slope upward. The multiple first radiation sections 31 are located on the top layer of the dielectric substrate, and the multiple second radiation sections 32 are located on the bottom layer of the dielectric substrate. The antenna feeding point is connected to the first radiation section closest to the emission module 20. Adjacent first radiation sections 31 are connected to a second radiation section 32 through a contact point 34, so that the radiation section forms a spiral ascending structure.

[0030] Since the resonance frequency band of the antenna is determined by the effective current path length of the antenna, to adjust the working frequency band, it is necessary to consider starting from the physical length of the antenna. The strongest signal transmission of the antenna is at 1 / 4 of the wavelength of the sine wave. Considering that interference or mutual cancellation may occur between adjacent radiation sections, the total physical length of the radiation section will be slightly longer than the physical length. Through experiments, the total physical length of the radiation section is denoted as: L1, and L1 is 1 / 2 of the wavelength of the sine wave. The calculation formula is as follows:

[0031] L1 = 1 / 2(λ / f)

[0032] Where λ is the speed of light and f is the resonance frequency of the emission module 20.

[0033] The widths and lengths of the first radiation section 31 and the second radiation section 32 are the same. The spacing between adjacent first radiation sections 31 is the same as the spacing between adjacent second radiation sections 32. The spacing between adjacent first radiation sections 31 or the spacing between adjacent second radiation sections 32 is greater than or equal to the width of the first radiation section 31 or the second radiation section 32. The spacing between adjacent first radiation sections 31 and the spacing between adjacent second radiation sections 32 are both denoted as: W2. The determinant of S11 is the input impedance of the antenna. Generally, the default input impedance of a monopole antenna is 50 ohms. When the input impedance of the designed antenna is infinitely close to 50 ohms, then S11 will approach infinitely small. On the contrary, when the input impedance deviates from 50 ohms, then S11 will deteriorate. In other words, the greater the deviation of the input impedance from 50 ohms, the worse S11 will be. By adjusting the length of W2, the magnitude of the input impedance of the antenna in the frequency band of the transmitting module 20 is changed, and then the S11 parameter is adjusted. Through simulation calculation, when W2 is 1 mm, the transmission is relatively smooth. When it is less than 1 mm, the impedance exceeds the standard. When it is greater than 1 mm, the impedance becomes smaller, which does not match the output point and is not smooth. The upward inclination angles of adjacent first radiation sections 31 are the same as the upward inclination angles of adjacent second radiation sections 32. When W2 is equal to the widths of the first radiation section 31 and the second radiation section 32, the helix angle of the formed helically ascending structure is: arctan(W2 / (πW2)), where π is the pi. When the helix angle range is 5.293 degrees, the signal propagation is the smoothest.

[0034] Advantages of the present utility model: The present utility model provides a helically ascending on-board transmitting module. The main control module 10, the transmitting module 20, and the antenna module 30 are all arranged on the same dielectric substrate. The dielectric substrate includes a top layer and a bottom layer facing away from the top layer; the antenna module 30 is an on-board antenna module 30. The antenna module 30 is printed on the top layer and the bottom layer of the dielectric substrate. The antenna body includes a connection section 33 and a plurality of radiation sections. The connection section 33 is connected to the connection point 34 of the transmitting module 20 and the antenna feeding point of the radiation section. The radiation section includes a plurality of first radiation sections 31 and a plurality of second radiation sections 32 that are upwardly inclined. The plurality of first radiation sections 31 are located on the top layer of the dielectric substrate, and the plurality of second radiation sections 32 are located on the bottom layer of the dielectric substrate. Adjacent first radiation sections 31 are connected to a second radiation section 32 through a connection point 34, so that the radiation section forms a helically ascending structure. This structure does not need to occupy a large PCBA space, has good radiation performance, smooth signal propagation, and low cost.

[0035] Although the present application has disclosed multiple aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Without departing from the concept of the present application, several modifications and improvements can be made, and these all fall within the protection scope of the present application. The multiple aspects and embodiments disclosed in the present application are only for illustrative purposes and are not intended to limit the present application. The actual protection scope of the present application is subject to the claims.

Claims

1. A spiral-type onboard launch module, comprising: A main control module (10), a transmitting module (20) and an antenna module (30), wherein the transmitting module (20) and the antenna module (30) form a radio frequency signal path, the main control module (10) and the transmitting module (20) are electrically connected, and the transmitting module (20) sends the information transmitted by the main control module (10) through the antenna module, characterized in that: the main control module (10), the transmitting module (20) and the antenna module (30) are all arranged on the same dielectric substrate, and the dielectric substrate comprises a top layer and a bottom layer facing away from the top layer; the antenna module (30) is a board-mounted antenna module (30), and the antenna module (30) is printed on the top layer and the bottom layer of the dielectric substrate, and the antenna body comprises a connecting section (33) and a plurality of radiation sections, The connecting section (33) is connected to a connecting point (34) of a transmitting module (20) and an antenna feed point of a radiating section. The radiating section comprises a plurality of first radiating sections (31) and a plurality of second radiating sections (32) which are inclined upward. The plurality of first radiating sections (31) are located on a top layer of the dielectric substrate, and the plurality of second radiating sections (32) are located on a bottom layer of the dielectric substrate. The antenna feed point is connected to a first radiating section closest to the transmitting module (20). The adjacent first radiating section (31) is connected to a second radiating section (32) via a connection point (34), so that the radiating section forms a spiral ascending structure. The antenna module (30) is located on the upper part of a main control module (10) and a transmitting module (20), and has no circuit wiring or metal covering around it.

2. The spiral-up type onboard transmitting module according to claim 1, characterized in that: The antenna module (30) is suitable for a propagation distance with a receiver of 200 m.

3. The spiral-up type onboard transmitting module according to claim 1, characterized in that: The transmitting module (20) adopts a transmitting module (20) with a resonance frequency of 433 MHz.

4. The spiral-up type onboard transmitting module according to claim 1, characterized in that: The total physical length of the radiation section is recorded as: L1, L1 is 1 / 2 of the wavelength of the sine wave, and the calculation formula is as follows: L1=1 / 2(λ / f) Wherein, λ is the speed of light, and f is the resonant frequency of the transmitting module (20).

5. The spiral-up type onboard transmitting module according to claim 1, characterized in that: The first radiation section (31) and the second radiation section (32) have the same width and length.

6. The spiral-up type onboard transmitting module as claimed in claim 5, characterized in that: The spacing between adjacent first radiation sections (31) is the same as the spacing between adjacent second radiation sections (32), and the spacing between adjacent first radiation sections (31) or the spacing between adjacent second radiation sections (32) is greater than or equal to the width of the first radiation section (31) or the second radiation section (32).

7. The spiral-up type onboard transmitting module according to claim 6, characterized in that: The spacing between adjacent first radiation sections (31) and the spacing between adjacent second radiation sections (32) are both recorded as: W2, where W2 is 1 mm.

8. The spiral-up type onboard transmitting module as claimed in claim 7, characterized in that: The upward tilt angle of adjacent first radiation sections (31) is the same as the upward tilt angle of adjacent second radiation sections (32).

9. The spiral-up type onboard transmitting module according to claim 7, characterized in that: When W2 is equal to the width of the first radiation section (31) and the second radiation section (32), the spiral rise angle of the spiral rise structure formed is: arctan(W2 / (πW2)), π is pi, and when the spiral rise angle range is 5.293 degrees, the signal propagates most smoothly.

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