Integrated antenna, positioning and short message reporting terminal

Abstract

The utility model discloses an integrated antenna and a positioning and short message reporting terminal.The integrated antenna comprises an antenna area and a device area which are arranged on a printed circuit board, an antenna oscillator is arranged in the antenna area and used for receiving RNSS signals and sending Beidou short message signals, and a circuit is arranged in the device area and used for receiving the RNSS signals and sending the Beidou short message signals. The signal processing module is used for processing RNSS signals and Beidou short message signals; and the antenna oscillator is electrically connected with the circuit through a line arranged on the printed circuit board. The integrated antenna is a linearly polarized antenna, receiving of RNSS signals and sending of Beidou short message signals can be achieved through one antenna oscillator, and when the integrated antenna receives and sends the signals, limitation of the placing direction of a terminal is small; meanwhile, the integrated antenna is small in size and light in weight, and the miniaturization design of the positioning and short message reporting terminal is facilitated; and the integrated antenna is wide in wave beam and can be used without manual debugging and installation, so that the production efficiency is greatly improved, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of satellite positioning and navigation terminals, in particular to an integrated antenna, a positioning and short message reporting terminal. Background Art

[0002] After the "Beidou-1" system was officially put into operation in 2003, satellite positioning and communication terminals that realize satellite positioning and satellite short message communication based on RNSS positioning and short message communication began to be developed and applied. In this application, the "positioning and short message reporting terminal" refers to a satellite positioning and satellite short message reporting communication terminal with dual functions of RNSS positioning and Beidou satellite short message communication.

[0003] On the one hand, such a terminal can use an RNSS positioning module (such as the early GPS positioning module, the BDS / GPS dual-mode positioning module after the official operation of the Beidou-2 system in 2013, and various current single Beidou positioning modules) to obtain information such as the current time, the position, speed, and heading of the terminal itself. On the other hand, it can use Beidou short message communication to report information such as the time, position, speed, and heading of the terminal to a specific object (such as a command center), realizing the short message communication reporting function, and at the same time, functions such as distress calling and position notification can also be realized.

[0004] Therefore, when such a terminal is working, it must be able to receive RNSS signals transmitted by navigation satellites and also be able to transmit Beidou short message communication signals (also called inbound signals), that is, the terminal must be equipped with an RNSS signal receiving antenna and a transmitting antenna for transmitting Beidou short message communication signals.

[0005] All along, in this technical field, RNSS signals and Beidou short message communication signals are both circularly polarized signals, and corresponding terminals usually use circularly polarized antennas in the form of ceramic microstrip antennas (such as the ceramic passive antenna in application number 202021596842.5, the ceramic patch antenna in 201420150111.6), four-arm spiral antennas (such as the four-arm spiral antenna in application number 201922286565.1, the low-profile frequency-variable four-arm spiral antenna in 201720028473.1), etc. The purpose is to minimize the polarization mismatch loss and obtain better signal transmission and reception effects.

[0006] In the prior art, taking the ceramic microstrip antenna, which has obvious advantages in terms of volume and cost and is the most widely used, as an example, this antenna has the following problems:

[0007] First, the gain on the back of the antenna is very low. Figure 1 For the typical gain pattern of the ceramic microstrip antenna adopted in the prior art in this technical field, from Figure 1As can be seen, the gain of the front side of the antenna (the part above the -90 to 90 connection line) is relatively high, while the gain of the back side of the antenna (the part below the -90 to 90 connection line) is very low.

[0008] Therefore, when using this antenna, there are relatively high requirements for the posture of the terminal: that is, the posture of the terminal placement must ensure that the front side of the antenna faces upward or southward. If the front side of the antenna faces downward or northward, it will lead to a very low success rate of sending short messages or even unable to send short messages successfully.

[0009] Second, the antenna is relatively large in volume and heavy. The volume of common ceramic microstrip antennas is usually between 10 mm (length) × 10 mm (width) × 4 mm (thickness) and 35 mm (length) × 35 mm (width) × 4 mm (thickness). The 10 mm × 10 mm × 4 mm antenna weighs about 2 grams, and the 35 mm × 35 mm × 4 mm antenna weighs about 18 grams.

[0010] Generally, two independent antennas need to be installed inside the terminal, which are respectively used to receive RNSS signals and send Beidou short message communication signals, resulting in a relatively large volume of the terminal, especially the thickness, which is not conducive to wearable applications. Therefore, with this antenna design, usually the antenna and the transceiver circuit are separated or split in structure, and the antenna and the transceiver circuit need to be manufactured separately, and then connected or welded through the line ports, resulting in a relatively large volume and weight of the terminal.

[0011] Third, the antenna needs to be installed and welded manually, and connected with connectors or plug-in components. The production efficiency of the terminal is relatively low and the cost is relatively high.

[0012] Therefore, the present application proposes corresponding solutions to solve the above technical problems in this technical field. Utility Model Content

[0013] The present utility model provides an integrated antenna, positioning and short message reporting terminal, which solves the obvious deficiencies of the existing antennas in terms of volume, weight, quantity, and beam width in this technical field, resulting in problems such as relatively high requirements for the placement posture of this type of terminal during use, low installation and manufacturing efficiency, high cost, and difficulty in miniaturization.

[0014] To solve the above technical problems, the technical solution adopted by the present utility model is to provide an integrated antenna, which includes an antenna area and a device area provided on a printed circuit board. An antenna element is provided in the antenna area for receiving RNSS signals and sending Beidou short message signals, and a circuit is provided in the device area for processing the RNSS signals and the Beidou short message signals; the electrical connection line between the antenna element and the circuit is a printed line provided on the printed circuit board.

[0015] In some embodiments, the antenna area is arranged in an independent area on one side of the printed circuit board. The main body of the antenna oscillator is linear and is arranged on the printed circuit board in the form of a printed circuit. A blank isolation area is left around the antenna oscillator.

[0016] In some embodiments, the electrical connection line between the antenna oscillator and the circuit includes a straight printed line or a bent printed line arranged on the printed circuit board.

[0017] In some embodiments, the bent printed line includes a Z-shaped bent portion arranged at the bottom of the antenna oscillator. The Z-shaped bent portion includes a first bent line, a second bent line, and a third bent line. The first end of the first bent line is connected to and perpendicular to the bottom of the antenna oscillator. The second end of the first bent line is connected to and perpendicular to the first end of the second bent line. The second bent line is in the same extending direction as the antenna oscillator. The second end of the second bent line is connected to and perpendicular to the first end of the third bent line. The third bent line is in the same extending direction as the first bent line. The second end of the third bent line is the feeding point for connecting the circuit arranged in the device area.

[0018] In some embodiments, the circuit includes a radio frequency switch. The bottom of the antenna oscillator is directly electrically connected to the radio frequency switch, or is electrically connected to the radio frequency switch through the straight printed line or the bent printed line. A matching structure is arranged at the connection where the radio frequency switch is directly electrically connected to the antenna oscillator, or a matching structure is arranged at the connection where the radio frequency switch is electrically connected to the antenna oscillator through the straight printed line or the bent printed line.

[0019] In some embodiments, the printed circuit board includes a wiring structure arranged on its top layer and bottom layer. The antenna oscillator is arranged in the antenna area on the top layer, and a blank area corresponding to the antenna area is arranged on the bottom layer.

[0020] In some embodiments, the printed circuit board is provided with a four-layer wiring structure, including a top layer, a first intermediate layer, a second intermediate layer, and a bottom layer. The antenna oscillator and the matching structure are arranged on the top layer.

[0021] The present application also provides a positioning and short message reporting terminal, which is characterized by including the aforementioned integrated antenna, and a circuit arranged in the device area including a radio frequency switch, an RNSS signal receiving circuit, and a short message signal sending circuit. The radio frequency switch is a single-pole double-throw switch. The common end of the single-pole double-throw switch is electrically connected to the antenna oscillator. The first signal end is electrically connected to the RNSS signal receiving circuit, and the second signal end is electrically connected to the short message signal sending circuit.

[0022] In some embodiments, the circuit provided in the device area further includes a control circuit, which is electrically connected to the RF switch, the RNSS signal receiving circuit, and the short message signal transmitting circuit respectively; the control circuit is configured to control the electrical connection relationship of the RF switch to controllably switch the antenna element to be connected to the RNSS signal receiving circuit or the short message signal transmitting circuit.

[0023] In some embodiments, the circuit provided in the device area further includes a low-noise amplifier circuit located between the RF switch and the RNSS signal receiving circuit. The RF switch is controllably connected to the low-noise amplifier circuit, and the low-noise amplifier circuit is configured to perform low-noise amplification on the RNSS signal received by the antenna element.

[0024] The beneficial effects of the present utility model are as follows: The present utility model discloses an integrated antenna, a positioning and short message reporting terminal. The integrated antenna includes an antenna area and a device area provided on a printed circuit board. An antenna element is provided in the antenna area for receiving RNSS signals and transmitting Beidou short message signals, and a circuit is provided in the device area for processing RNSS signals and Beidou short message signals; the antenna element is electrically connected to the circuit through a line provided on the printed circuit board. The integrated antenna of the present application is a linearly polarized antenna, and the reception of RNSS signals and the transmission of Beidou short message signals can be achieved through one antenna element. Moreover, when the integrated antenna of the present application receives and transmits signals, it is less restricted by the placement direction of the terminal; at the same time, the integrated antenna of the present application is small in size and light in weight, which is beneficial to the miniaturization design of the positioning and short message reporting terminal of the present application; and the integrated antenna has a wide beamwidth and can be used without manual debugging and installation, greatly improving the production efficiency and reducing the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the typical gain direction of a ceramic microstrip antenna adopted in the prior art in this technical field;

[0026] Figure 2 is a schematic structural diagram of the integrated antenna of the present utility model;

[0027] Figure 3 is a schematic partial structural diagram of the integrated antenna of the present utility model;

[0028] Figure 4 is a schematic block diagram of the principle of a positioning and short message reporting terminal of the present utility model;

[0029] Figure 5 is a circuit diagram of the RF switch in a positioning and short message reporting terminal of the present utility model;

[0030] Figure 6It is the simulation result diagram of the gain direction of the integrated antenna of the present utility model;

[0031] Figure 7 It is the schematic diagram of the top layer of the printed circuit board in the integrated antenna of the present utility model;

[0032] Figure 8 It is the schematic diagram of the first intermediate layer of the printed circuit board in the integrated antenna of the present utility model;

[0033] Figure 9 It is the schematic diagram of the bottom layer of the printed circuit board in the integrated antenna of the present utility model. Detailed implementation manners

[0034] For the convenience of understanding the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. The preferred embodiments of the present utility model are shown in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present utility model more thorough and comprehensive.

[0035] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0036] As Figure 2 shown, the integrated antenna of the present utility model includes an antenna area 2 and a device area 3 provided on a printed circuit board 1. An antenna element 21 is provided in the antenna area 2 for receiving RNSS signals and transmitting Beidou short message signals, and the antenna element 21 is shared in a time-sharing manner; a circuit is provided in the device area 3 for processing RNSS signals and Beidou short message signals; the antenna element 21 is electrically connected to the circuit through a printed line provided on the printed circuit board 1. Here, the printed line includes the copper-clad lines in each layer of the printed circuit board 1 and the connection vias provided between multiple layers of the printed circuit board 1 for line connection.

[0037] The integrated antenna of the present utility model is a linearly polarized antenna. The reception of RNSS signals and the transmission of Beidou short message signals can be achieved through a single antenna element 21. Moreover, when the integrated antenna of the present application receives and transmits signals, it is less restricted by the orientation of the terminal. At the same time, the integrated antenna of the present application is small in size and light in weight, which is conducive to the miniaturized design of the positioning and short message reporting terminal adopting the solution of the present application. In addition, the integrated antenna has a wide beamwidth and can be used without manual debugging and installation, greatly improving the production efficiency and reducing the labor cost. Furthermore, the present application changes the conventional design of the positioning and short message reporting terminal in the prior art, making the product more miniaturized and convenient to use, and enhancing the user experience.

[0038] The following Figures 2 to 9 , taking specific embodiments as examples, further elaborates the present application in detail.

[0039] As Figure 2 shown, in this embodiment, the printed circuit board 1 of the present application uses an FR-4 (Flame Retardant-4) printed circuit board with a thickness of 0.8 mm. The FR-4 printed circuit board is a commonly used substrate for electronic components, mainly composed of a composite material of glass fiber and epoxy resin, and is also called glass fiber cloth impregnated with epoxy resin. FR-4 has the characteristics of good heat resistance, stable electrical insulation performance, and high mechanical strength.

[0040] Furthermore, in combination with Figure 2 、 Figure 3 , the antenna area 2 of the integrated antenna is set in an independent area on one side of the printed circuit board 1. The antenna area 2 is rectangular as a whole, with dimensions of 9 mm (width) × 37 mm (height). Combined with the printed circuit board 1 with a thickness of 0.8 mm, the weight of the antenna area 2 is less than 0.7 grams, having the advantages of small size and light weight. The device area 3 is L-shaped as a whole. The antenna area 2 is provided with an antenna element 21, a Z-shaped bending part 23, and a matching structure 28.

[0041] Specifically, the main body of the antenna element 21 is linear and is arranged on the printed circuit board 1 in the form of a printed circuit. A blank isolation area 22 is left around the antenna element 21. The blank isolation area 22 is set to improve the ability of the antenna element 21 to radiate or receive signals and improve the communication quality.

[0042] At the bottom end of the antenna element 21, it can be directly electrically connected to the circuit on the device area 3. The electrical connection line between the antenna element 21 and the circuit includes a straight printed line or a bent printed line provided on the printed circuit board 1. For example, a straight printed line extending horizontally or a bent printed line such as an L-shaped or Z-shaped printed line is used to connect the circuit on the device area 3, which mainly depends on the relative position relationship between the bottom end of the antenna element 21 and the terminal on the corresponding connected circuit (such as the position of the common terminal of the RF switch in the circuit), so as to reasonably arrange the connection method between these two ends.

[0043] For example, for the bent printed line, in order to optimize the layout of the antenna element 21, space is reserved for the matching structure 28 below the antenna element 21. Further, the bent printed line includes a Z-shaped bent portion 23 provided at the bottom of the antenna element 21. The Z-shaped bent portion 23 includes a first bent line 24, a second bent line 25, and a third bent line 26. The first end of the first bent line 24 is connected to and perpendicular to the bottom of the antenna element 21, and the second end of the first bent line 24 is connected to and perpendicular to the first end of the second bent line 25; the second bent line 25 is in the same extending direction as the antenna element 21, and the second end of the second bent line 25 is connected to and perpendicular to the first end of the third bent line 26; the third bent line 26 is in the same extending direction as the first bent line 24, and the second end of the third bent line 26 is the feeding point 27. The antenna element 21 is electrically connected to the circuit in the device area 3 through the feeding point 27 of the Z-shaped bent portion 23. Using the above line setting method further saves space and is beneficial to the miniaturization of the integrated antenna.

[0044] The circuit on the device area 3 includes an RF switch. The bottom of the antenna element 21 is directly electrically connected to the RF switch, or is electrically connected to the RF switch through a straight printed line or a bent printed line; in addition, a matching structure 28 is provided at the connection where the RF switch is directly electrically connected to the antenna element 21, or a matching structure 28 is provided at the connection where the RF switch is electrically connected to the antenna element 21 through a straight printed line or a bent printed line. Further, combined Figure 2 with the above, the second end of the third bent line 26 of the Z-shaped bent portion 23 is connected to a matching structure 28. The shape of the matching structure 28 is rectangular and is also a printed copper wire, which is equivalent to matching in the form of a microstrip. It can also be other shapes or other circuit matching forms. The matching structure 28 is arranged in the matching space 29 surrounded by the device area 3, the second bent line 25, and the third bent line 26, and the matching structure 28 is in the same extending direction as the second bent line 25. The matching structure 28 is used to match the impedance of the antenna element 21 with the impedance of the circuit in the device area 3 to ensure that the signal transmission between the circuit in the device area 3 and the antenna element 21 reaches the best matching state.

[0045] The printed circuit board 1 is provided with at least two-layer wiring structures, including the wiring structures arranged on the top layer and the bottom layer of the printed circuit board 1; the antenna oscillator 21 is arranged on the top layer.

[0046] Furthermore, as Figure 2 , Figures 7 to 9 shown, the printed circuit board 1 is provided with four-layer wiring structures, including the top layer, the first intermediate layer, the second intermediate layer and the bottom layer. The antenna oscillator 21 and the matching structure 28 are arranged on the top layer.

[0047] Specifically, as Figure 7 shown, the antenna oscillator 21, the Z-shaped bending part 23 and the matching structure 28 are all arranged on the top layer. As Figure 8 shown, a rectangular grounding copper foil is arranged on the first intermediate layer, and the position of the grounding copper foil corresponds to the matching structure 28 located on the top layer. The grounding copper foil is used to achieve the matching function. As Figure 9 shown. The ground wire and the power supply wire are both arranged on the top layer and the bottom layer. The first intermediate layer and the second intermediate layer are used to arrange signal lines to realize signal transmission between circuits. Referring to Figure 2 , at the left edge of the device area 3, a plurality of grounding vias are also arranged to connect all the grounding copper foils of the four-layer wiring structure. The distance between these grounding vias is preferably 1 mm. Figures 7 to 9 The corresponding dimensional values are also marked, and the unit is millimeter (mm). Here, it will not be specifically described. It can be seen that the whole printed circuit board 1 is rectangular, and the corresponding external dimensions of the length and width are 51 mm × 33 mm, having a relatively small size. Figure 7 The white area in the corresponding top layer is the antenna area, and its size is approximately 9 mm (width) × 37 mm (height), that is, the length of the antenna oscillator 21 is within the range of 37 mm ± 2 mm. The striped area is the device area 3. Figure 9 The corresponding bottom layer also has a blank area and a device area, which are generally consistent with the Figure 7 antenna area and the device area in Figure 9 , but there are slight differences, that is, the blank area without any lines or circuits is arranged on the bottom layer in

[0048] which corresponds to the position of the antenna area on the top layer, so as not to interfere with the radiation (or reception) ability of the antenna oscillator 21, so that the radiation and reception ability of the antenna oscillator 21 has better performance.Moreover, when one or more intermediate layers are also provided between the top layer and the bottom layer of the printed circuit board 1, similarly, the corresponding areas of each intermediate layer corresponding to the location of the antenna area on the top layer are also blank areas, and the purpose is also to avoid interfering with the radiation (or reception) of the antenna element 21. Of course, the antenna area and the antenna element 21 therein can also be arranged on the bottom layer, and the corresponding positions of the top layer and the intermediate layers are blank areas. Therefore, the top layer and the bottom layer here have symmetry, mainly the difference in appellation, which does not affect the protection scope of this application.

[0049] The antenna element 21 of this application can receive RNSS signals such as GPS L1 (carrier frequency is 1575.42 MHz), BDS B1I (carrier frequency is 1561.098 MHz), and BDS B1C (carrier frequency is 1575.42 MHz), and send Beidou short message signals (carrier frequencies are 1614.26 MHz or 1618.34 MHz). It can be seen that the linear antenna element 21 of this application has a relatively wide operating bandwidth and can meet the normal operating requirements within its operating bandwidth.

[0050] Reference Figures 2 to 5 , this application also provides a positioning and short message reporting terminal, including the above-mentioned integrated antenna, as well as a radio frequency switch 31, an RNSS signal receiving circuit 32, a short message signal sending circuit 33, a control circuit 34, and a low-noise amplifier circuit 35 arranged in the device area 3.

[0051] Specifically, as Figure 3 , Figure 4 shown, the radio frequency switch 31 is electrically connected to the antenna element 21 through the feeding point 27. The radio frequency switch 31 is electrically connected to the control circuit 34 and is also switched to connect to the low-noise amplifier circuit 35 or the short message signal sending circuit 33 through the control circuit 34. The low-noise amplifier circuit 35 is also electrically connected to the RNSS signal receiving circuit 32. The control circuit 34 is also electrically connected to the RNSS signal receiving circuit 32 and the short message signal sending circuit 33 respectively, and is used to control the working states of the RNSS signal receiving circuit 32 and the short message signal sending circuit 33.

[0052] The RNSS signal receiving circuit 32 is used to receive and process RNSS signals; the short message signal sending circuit 33 is used to process and send Beidou short message signals; the control circuit 34 is used to control the connection state of the radio frequency switch 31 to allow the radio frequency switch 31 to switch the antenna element 21 to be controlled to connect to the low-noise amplifier circuit 35 or the short message signal sending circuit 33. The control circuit 34 is also used to control the working states of the RNSS signal receiving circuit 32 and the short message signal sending circuit 33 to be switched synchronously; the low-noise amplifier circuit 35 is used to amplify and process RNSS signals.

[0053] In this embodiment, the low-noise amplifier circuit 35 is an optional circuit. The RF switch 31 can be directly switched to connect to the RNSS signal receiving circuit 32 through the control circuit 34, or can be switched to connect to the low-noise amplifier circuit 35 through the control circuit 34 and then connected to the RNSS signal receiving circuit 32.

[0054] As Figure 4 , Figure 5 shown, in this embodiment, the RF switch 31 is a single-pole double-throw switch. The common terminal of the single-pole double-throw switch is electrically connected to the antenna element 21, and the two signal terminals are controlled to be switched to connect to the RNSS signal receiving circuit 32 or the short message signal transmitting circuit 33.

[0055] Specifically, the specific implementation form of the single-pole double-throw switch includes a switch chip U1, and the model of the switch chip U1 is LX1630H. The common terminal ANT of the switch chip U1 is electrically connected to the antenna element 21 through the feeding point 27; the first signal terminal RF1 of the switch chip U1 is electrically connected to the low-noise amplifier circuit 35 or directly electrically connected to the RNSS signal receiving circuit 32; the second signal terminal RF2 of the switch chip U1 is electrically connected to the short message signal transmitting circuit 33; the power supply terminal VDD of the switch chip U1 is electrically connected to the first DC power supply 3.0V; the control terminal VCTL of the switch chip U1 is electrically connected to the control circuit 34 to receive the control signal CONTROL; the grounding terminal GND of the switch chip U1 is grounded.

[0056] Specifically, when the control circuit 34 controls the control terminal VCTL of the switch chip U1 to become low level, the common terminal ANT and the first signal terminal RF1 of the switch chip U1 are connected, and the antenna element 21 is used to receive the RNSS signal and transmit it to the low-noise amplifier circuit 35; when the control circuit 34 controls the control terminal VCTL of the switch chip U1 to become high level, the common terminal ANT and the second signal terminal RF2 of the switch chip U1 are connected, and the short message signal transmitting circuit 33 is accessed, and the antenna element 21 is used to transmit the Beidou short message signal.

[0057] In summary, as combined with Figures 2 to 5 shown, the working principle of the present utility model is:

[0058] In the positioning stage, the antenna element 21 receives the RNSS signal transmitted by the navigation satellite, and transmits the received RNSS signal to the RF switch 31 through the feeding point 27 of the Z-shaped bending portion 23. The control circuit 34 controls the RF switch 31 to be connected to the low-noise amplifier circuit 35, and the low-noise amplifier circuit 35 amplifies the RNSS signal and then transmits it to the RNSS signal receiving circuit 32. The RNSS signal receiving circuit 32 receives the RNSS signal and further processes it to obtain the current time and the position, speed, heading, etc. of the positioning and short message reporting terminal itself, so as to realize the positioning function.

[0059] In the sending stage, the control circuit 34 controls the radio frequency switch 31 to be connected to the short message signal sending circuit 33. The short message signal sending circuit 33 sends the processed Beidou short message signal to a specific object (such as the command center) through the radio frequency switch 31 and the antenna element 21, reports information such as the time, position, speed, and heading of the positioning and short message reporting terminal, realizes the short message communication reporting function, and can also realize functions such as distress calling and position notification.

[0060] Such as Figure 6 shown, is the simulation result diagram of the gain direction of the integrated antenna in the positioning and short message reporting terminal of the present application. It can be seen from Figure 6 that except for the obvious decrease in gain in a local area in the -90-degree direction (this angle mainly corresponds to the horizontal direction), the gain changes little in other directions. Therefore, no matter how the terminal is placed, it has good receiving and transmitting characteristics for the satellites above it, and there will be no gain dead angle to limit the use attitude and angle of the terminal. After using this integrated antenna, when the positioning and short message reporting terminal is placed in any attitude, it can receive the RNSS signals required for normal positioning and transmit Beidou short message signals; in addition, as long as the positioning and short message reporting terminal is placed in an attitude where the -90-degree direction does not point to the GEO satellite of the Beidou satellite navigation system, it can reliably send Beidou short message signals.

[0061] The positioning and short message reporting terminal of the present application can be equipped with a variety of RNSS signal receiving circuits 32 and short message signal sending circuits 33, such as positioning modules of the ATGM336H-5N series and ATGM336H-6N series, DM222 short message communication modules, RXM607 Beidou short message communication modules, etc., or other dedicated RNSS positioning chips and Beidou short message communication chips can also be used to realize positioning and sending Beidou short message signals.

[0062] In summary, when the positioning and short message reporting terminal of the present application is in use, it has very low requirements for the placement attitude, and at the same time has the advantages of small size, light weight, and miniaturization; not only has a low production cost and high production efficiency, but also is suitable for wearable applications.

[0063] As can be seen, the present application discloses an integrated antenna, a positioning and short message reporting terminal. The integrated antenna includes an antenna area and a device area provided on a printed circuit board. An antenna element is provided in the antenna area for receiving RNSS signals and transmitting Beidou short message signals, and a circuit is provided in the device area for processing RNSS signals and Beidou short message signals; the antenna element is electrically connected to the circuit through a line provided on the printed circuit board. The integrated antenna of the present application is a linear polarization antenna, and the reception of RNSS signals and the transmission of Beidou short message signals can be achieved through one antenna element. Moreover, when the integrated antenna of the present application receives and transmits signals, it is less restricted by the placement direction of the terminal; at the same time, the integrated antenna of the present application is small in size and light in weight, which is beneficial to the miniaturization design of the positioning and short message reporting terminal of the present application; and the integrated antenna has a wide beam width and can be used without manual debugging and installation, greatly improving the production efficiency and reducing the labor cost.

[0064] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. Integrated antenna, characterized in that, It includes an antenna area and a device area arranged on a printed circuit board. An antenna oscillator is arranged in the antenna area for receiving RNSS signals and transmitting Beidou short message signals, and a circuit is arranged in the device area for processing the RNSS signals and the Beidou short message signals; the electrical connection line between the antenna oscillator and the circuit is a printed line arranged on the printed circuit board.

2. The integrated antenna according to claim 1, characterized in that, The antenna area is arranged in an independent area on one side of the printed circuit board. The main body of the antenna oscillator is linear and is arranged on the printed circuit board in the form of a printed circuit. A blank isolation area is left around the antenna oscillator.

3. The integrated antenna according to claim 2, wherein, The electrical connection line between the antenna oscillator and the circuit includes a straight printed line or a bent printed line arranged on the printed circuit board.

4. The integrated antenna according to claim 3, wherein The bent printed line includes a Z-shaped bending part arranged at the bottom of the antenna oscillator. The Z-shaped bending part includes a first bending line, a second bending line and a third bending line. The first end of the first bending line is connected to and perpendicular to the bottom of the antenna oscillator. The second end of the first bending line is connected to and perpendicular to the first end of the second bending line. The second bending line is in the same extending direction as the antenna oscillator. The second end of the second bending line is connected to and perpendicular to the first end of the third bending line. The third bending line is in the same extending direction as the first bending line. The second end of the third bending line is the feeding point for connecting the circuit arranged in the device area.

5. The integrated antenna according to claim 3, wherein The circuit includes a radio frequency switch. The bottom of the antenna oscillator is directly electrically connected to the radio frequency switch, or is electrically connected to the radio frequency switch through the straight printed line or the bent printed line. A matching structure is arranged at the connection where the radio frequency switch is directly electrically connected to the antenna oscillator, or a matching structure is arranged at the connection where the radio frequency switch is electrically connected to the antenna oscillator through the straight printed line or the bent printed line.

6. The integrated antenna according to claim 1, characterized in that The printed circuit board includes a wiring structure arranged on its top layer and bottom layer; the antenna oscillator is arranged in the antenna area on the top layer, and a blank area corresponding to the antenna area is arranged on the bottom layer.

7. The integrated antenna according to claim 5, wherein The printed circuit board is provided with a four-layer wiring structure, including a top layer, a first intermediate layer, a second intermediate layer and a bottom layer; the antenna oscillator and the matching structure are arranged on the top layer.

8. A positioning and short message reporting terminal, characterized in that, It includes an integrated antenna according to any one of claims 1-7, and the circuit arranged in the device area includes a radio frequency switch, an RNSS signal receiving circuit and a short message signal transmitting circuit; the radio frequency switch is a single-pole double-throw switch. The common end of the single-pole double-throw switch is electrically connected to the antenna oscillator, the first signal end is electrically connected to the RNSS signal receiving circuit, and the second signal end is electrically connected to the short message signal transmitting circuit.

9. The positioning and short message reporting terminal according to claim 8, characterized in that, The circuit arranged in the device area further includes a control circuit. The control circuit is respectively electrically connected to the radio frequency switch, the RNSS signal receiving circuit and the short message signal transmitting circuit; the control circuit is used to control the electrical connection relationship of the radio frequency switch to controllably switch the connection of the antenna oscillator to the RNSS signal receiving circuit or the short message signal transmitting circuit.

10. The positioning and short message reporting terminal according to claim 8, characterized in that, The circuit disposed within the device area further includes a low-noise amplifier circuit located between the RF switch and the RNSS signal receiving circuit. The RF switch is controllably connected to the low-noise amplifier circuit, and the low-noise amplifier circuit is configured to perform low-noise amplification on the RNSS signal received by the antenna element.

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