Satellite positioning receiver

Abstract

To provide a satellite positioning receiver which incorporates antennas for a plurality of ranging satellites while reducing the size of the receiver, thereby making it suitable for carrying around with one's hand.SOLUTION: A satellite positioning receiver includes a housing consisting of a bottom case and a top case, a rectangular flat main board housed inside the housing, a ranging satellite antenna unit arranged overlapping a first surface which is the upper surface side of the main board, a planar antenna unit for wireless communication arranged vertically along an edge of the main board, and a plate-shaped battery housed between a second surface of the main board opposite to the first surface and the bottom case to supply power to the main board. The ranging satellite antenna unit has a structure in which a first planar antenna for receiving a first ranging signal transmitted from a ranging satellite and a second planar antenna for receiving a second ranging signal transmitted from the ranging satellite are overlapped.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] One aspect of the present invention relates to a satellite positioning receiver used to measure a work position, for example, at a construction site such as a civil engineering work site or at a farm. [Background technology]

[0002] For example, at construction sites such as civil engineering works, a system has been proposed in which a satellite positioning receiver (hereinafter referred to as a GNSS receiver) using a Global Navigation Satellite System (GNSS) is mounted on construction machinery such as bulldozers and excavators that perform work while moving, and the GNSS receiver measures the working position of the construction machinery in real time (see, for example, Patent Document 1). By using this type of system, it becomes possible to manage, for example, the progress of construction work in real time based on the measured working position data of the construction machinery. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-26529 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been a growing need to manage the locations of workers as well as construction machinery at construction sites. However, the existing GNSS receivers used at construction sites are large in size, and making workers carry them increases the burden on them, which could lead to reduced work efficiency.

[0005] In particular, GNSS receivers need to receive multiple GNSS signals in different frequency bands such as L1 and L2, which requires multiple GNSS antennas. Therefore, determining how to configure multiple GNSS antennas is one of the challenges in miniaturizing GNSS receivers.

[0006] The present invention has been made in view of the above circumstances, and aims to provide a satellite positioning receiver which incorporates antennas for multiple ranging satellites while miniaturizing the receiver, thereby making it suitable for carrying around with one's hand. [Means for solving the problem]

[0007] In order to solve the above problems, one embodiment of a satellite positioning receiver according to the present invention comprises a housing consisting of a bottom case and a top case attached to the bottom case, a rectangular, flat main board housed inside the housing, an antenna unit for a ranging satellite arranged in a stacked state on a first surface which is the upper side of the main board, a planar antenna unit for wireless communication consisting of a main antenna and a sub-antenna arranged vertically along an edge of the main board, and a plate-shaped battery housed between the bottom case and a second surface of the main board opposite the first surface and supplying power to the main board. Also, The ranging satellite antenna unit teeth A structure in which a first planar antenna for receiving a first ranging signal transmitted from a ranging satellite and a second planar antenna for receiving a second ranging signal transmitted from the ranging satellite are overlapped. and a high-frequency circuit board on which a high-frequency circuit for receiving and processing the first ranging signal and the second ranging signal received by the first planar antenna and the second planar antenna, respectively, is mounted, the high-frequency circuit board being disposed on the rear side of the second planar antenna, and a high-frequency cable connecting the high-frequency circuit board and the main board. This is what we have decided.

[0008] According to one aspect of the present invention, the antenna unit for a ranging satellite is arranged in such a manner that the first and second planar antennas are overlapped and placed on the upper surface side of the main board, which makes it possible to reduce the horizontal size of the receiver compared to when the first and second planar antennas are arranged side by side in the horizontal direction or when the antenna unit for a ranging satellite is arranged side by side in the horizontal direction on the main board. In addition, the high-frequency circuit for receiving and processing the first and second ranging signals is mounted on a dedicated high-frequency circuit board, and the high-frequency circuit board is arranged on the back side of the second planar antenna, and the high-frequency circuit board of the high-range satellite antenna unit is electrically connected to the main board via a high-frequency cable. Therefore, for example, if it becomes necessary to use an external ranging satellite antenna in order to receive GNSS signals of other frequency bands in the future, it becomes possible to easily switch the connection of the high-frequency circuit board to the external ranging satellite antenna.

[0009] Also, one embodiment of the present invention may be configured such that in an antenna unit for a ranging satellite, a high-frequency circuit for receiving and processing the first and second ranging signals is mounted on a dedicated high-frequency circuit board, and this high-frequency circuit board is arranged overlapping the back side of the second planar antenna, and a power feed pin is provided from the high-frequency circuit board to pass through the second planar antenna and the first planar antenna, and this power feed pin electrically connects between the high-frequency circuit board and the first planar antenna and the second planar antenna.

[0010] With this configuration, by mounting the high frequency circuit on a dedicated high frequency circuit board, it is possible to increase the degree of freedom in designing the antenna unit for a ranging satellite compared to mounting the high frequency circuit on the second planar antenna, and furthermore, by using a power feed pin for electrical connection between the high frequency circuit board and the first and second planar antennas, harnesses, connectors, etc. are not required, and the antenna unit for a ranging satellite can be made smaller. In other words, it is possible to increase the degree of freedom in designing the antenna unit for a ranging satellite while maintaining its small size. Effect of the Invention

[0013] That is, according to one aspect of the present invention, it is possible to provide a satellite positioning receiver that incorporates antennas for a plurality of ranging satellites while miniaturizing the receiver, thereby making it suitable for carrying around with one's hand. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing an example of the appearance of a GNSS receiver according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing the GNSS receiver shown in FIG. 1 with the top case removed, viewed from a first direction. [Diagram 3] FIG. 3 is a perspective view showing the GNSS receiver shown in FIG. 1 with the top case removed, viewed from a second direction opposite to the first direction. [Figure 4]FIG. 4 is a side view showing an example of the internal configuration of the GNSS receiver shown in FIG. [Diagram 5] Figure 5 shows an example of the configuration of a board unit housed in the GNSS receiver shown in Figure 1, where (a) is a bottom view, (b) and (c) are side views seen from the long side, (d) is a top view, and (e) and (f) are side views seen from the short side. [Figure 6] FIG. 6 is a perspective view showing the configuration of the board unit shown in FIG. 5 when viewed obliquely from above. [Figure 7] FIG. 7 is a plan view showing an example of the configuration of an LTE (registered trademark) antenna substrate. [Figure 8] FIG. 8 is a plan view showing an example of a configuration for electrically connecting the main board and the LTE antenna board. [Figure 9] FIG. 9 is a perspective view showing a state immediately before the LTE antenna board is attached to the main board. [Figure 10] FIG. 10 is a diagram showing an example of a structure for fixing the LTE antenna board to the main board. [Figure 11] FIG. 11 is a perspective view showing the configuration of the GNSS antenna unit as viewed from above. [Figure 12] FIG. 12 is a perspective view showing the configuration of the GNSS antenna unit as viewed from the back side. [Figure 13] FIG. 13 is a side view of the GNSS antenna unit. [Figure 14] FIG. 14 is a perspective view showing an example of a configuration for electrically connecting the main board and the GNSS antenna unit. [Figure 15] FIG. 15 is a perspective view of the main board with the GNSS antenna unit fixed thereto, as viewed from above. [Figure 16] FIG. 16 is a perspective view illustrating an example of the configuration of a wireless power supply unit. [Figure 17] FIG. 17 is a plan view illustrating an example of the configuration of a wireless power supply unit. [Figure 18] FIG. 18 is a perspective view showing a state immediately before the wireless power supply unit is placed in the bottom case. [Figure 19] FIG. 19 is a perspective view showing a state in which the wireless power supply unit is disposed in the bottom case. [Figure 20] FIG. 20 shows the state in which the wireless power supply unit is disposed in the bottom case, where (a) is a plan view and (b) is a side view. [Figure 21] FIG. 21 is a perspective view showing a state in which the battery pack is housed in the bottom case. [Figure 22] FIG. 22 is a side view showing a state immediately before the inner holder is attached to the bottom case. [Figure 23] FIG. 23 is a perspective view showing a state in which the inner holder is attached to the bottom case. [Figure 24] FIG. 24 is a front view showing an example of the configuration of the function knob. [Diagram 25] FIG. 25 is a perspective view showing a state in which the function knob is attached to the top case. [Figure 26] FIG. 26 is a perspective view showing a state immediately before the board unit is attached to the top case. [Figure 27] FIG. 27 is a side view showing the state immediately before the board unit is attached to the top case. [Figure 28] FIG. 28 is a side view showing the state in which the board unit is attached to the top case. [Figure 29] FIG. 29 is a perspective view showing an example of a configuration for electrically connecting the battery pack and the board unit. [Diagram 30] FIG. 30 is a perspective view showing a state immediately before the top case is attached to the bottom case. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a satellite positioning receiver according to the present invention will be described with reference to the drawings.

[0016] [One embodiment] (Configuration example) (1) Overall configuration of the GNSS receiver FIG. 1 is a perspective view showing the appearance of a GNSS receiver used as a satellite positioning receiver according to an embodiment of the present invention.

[0017] The GNSS receiver according to one embodiment is configured as a substantially rectangular parallelepiped with a top case 2 detachably attached to a bottom case 1. An opening for a USB connector 21 and an opening for a function knob 22 are provided on the side of the top case 2. Both the USB connector 21 and the function knob 22 are waterproof.

[0018] Figures 2 and 3 are perspective views showing the GNSS receiver shown in Figure 1 with top case 2 removed, from a first direction and a second direction opposite to the first direction, respectively, and Figure 4 is a side view.

[0019] 2, 3 and 4, a battery pack 5 is housed in the bottom case 1, and a board unit 4 is disposed on top of the battery pack 5 while being supported by an inner holder 3. Although not shown in Fig. 4, a wireless power supply unit is disposed below the battery pack 5 inside the bottom case 1. The wireless power supply unit will be described later.

[0020] (2) Configuration of board unit 4 FIG. 5 shows an example of the configuration of the substrate unit 4, where (a) is a bottom view, (b) and (c) are side views seen from the long side, (d) is a top view, and (e) and (f) are side views seen from the short side.

[0021] The board unit 4 includes a main board 40. An electronic device 41 is mounted on the main board 40. The electronic device 41 configures a positioning processing circuit that processes a GNSS signal by a real-time kinematic (RTK) method required for positioning to obtain position coordinates, a transmission circuit that transmits position coordinate data to an external management device via a network, and the like.

[0022] An LTE (registered trademark) (Long Term Evolution) main antenna 6a and an LTE sub-antenna 6b functioning as first and second wireless communication antennas, and a GNSS antenna unit 7 for receiving GNSS signals transmitted from ranging satellites are mounted on the main board 40. The GNSS antenna unit 7 includes an L1 antenna 7a and an L2 antenna 7b for receiving two types of GNSS signals with different frequencies.

[0023] (3) Configuration and installation of the LTE main antenna 6a and the LTE sub-antenna 6b FIG. 6 is a perspective view showing a state in which the LTE main antenna 6a and the LTE sub-antenna 6b are mounted on the main board 40. As shown in FIG.

[0024] As shown in FIG. 6, the LTE main antenna 6a and the LTE sub-antenna 6b are attached perpendicular to the board surface of the main board 40, along the short side and long side of the main board 40 which are perpendicular to each other.

[0025] 6, pattern-prohibited areas 43 are formed on both sides of the main substrate 40 in areas corresponding to the short and long sides on which the LTE main antenna 6a and the LTE sub-antenna 6b are mounted. The pattern-prohibited areas 43 reduce interference between the main substrate 40 and the LTE main antenna 6a and the LTE sub-antenna 6b.

[0026] The LTE main antenna 6a and the LTE sub-antenna 6b are each a planar antenna having an LTE antenna element pattern 61 formed on an antenna substrate 60 having a horizontally long rectangular shape, as shown in Fig. 7. The antenna substrate 60 is provided with long holes 62a, 62b for electrical connection with the main substrate 40, and terminals are formed in the long holes 62a, 62b.

[0027] On the other hand, the short side and long side of the main board 40 are provided with protruding terminals 42a, 42b, as shown in FIG. 8, for example. When the LTE main antenna 6a and the LTE sub-antenna 6b are mounted on the main board 40, the terminals 42a, 42b are inserted into the long holes 62a, 62b of the LTE main antenna 6a and the LTE sub-antenna 6b. This insertion electrically connects the terminals provided in the long holes 62a, 62b to the terminals 42a, 42b of the LTE main antenna 6a and the LTE sub-antenna 6b. Then, the terminals provided in the long holes 62a, 62b and the terminals 42a, 42b provided on the main board 40 are soldered. This reinforces the electrical connection.

[0028] Further, notches 44a, 44b are provided on the short and long sides of the main substrate 40. These notches 44a, 44b are used for injecting an adhesive when fixing the LTE main antenna 6a and the LTE sub-antenna 6b to the main substrate 40.

[0029] 9 shows the state immediately before the LTE main antenna 6a and the LTE sub-antenna 6b are mounted on the main board 40, and FIG. 10 shows the state after mounting. As shown in FIG. 9 and FIG. 10, when mounting the LTE main antenna 6a and the LTE sub-antenna 6b on the main board 40, first, the long holes 62a and 62b of the LTE main antenna 6a and the LTE sub-antenna 6b are inserted into the terminals 42a and 42b of the main board 40, respectively, to establish an electrical connection between them. Then, adhesive is injected into the notches 44a and 44b of the main board 40. In this way, the LTE main antenna 6a and the LTE sub-antenna 6b are fixed to the main board 40.

[0030] (4) Configuration and installation of GNSS antenna unit 7 FIG. 11 is a perspective view of the GNSS antenna unit 7 seen diagonally from above, FIG. 12 is a perspective view of the GNSS antenna unit 7 seen from the rear side, and FIG.

[0031] The GNSS antenna unit 7 is configured by stacking the L1 antenna 7a on the L2 antenna 7b. Both the L1 antenna 7a and the L2 antenna 7b are planar antennas with antenna element patterns formed on a substrate. The L2 antenna 7b is rectangular, and the dimensions of its short and long sides are set to correspond to the interior dimensions of the top case 2. This is to obtain the highest possible reception sensitivity within the size of the GNSS receiver, and to reinforce the top case 2 and prevent rattling.

[0032] A high-frequency circuit board 70 is attached to the back side of the L2 antenna 7b. A high-frequency circuit including a low-noise amplifier (LNA) 71 is provided on this high-frequency circuit board 70. This high-frequency circuit is housed in a shield case. Furthermore, power feed pins 72, 72 are protruding from the high-frequency circuit board 70. These power feed pins 72, 72 penetrate the boards of the antennas 7a, 7b with the L1 antenna 7a overlapping the L2 antenna 7b. This allows power to be fed from the high-frequency circuit board 70 to the L1 antenna 7a and the L2 antenna 7b.

[0033] Furthermore, connection terminals are provided on the high-frequency circuit board 70 and the main board 40. These connection terminals are connected by a high-frequency cable 74 when the GNSS antenna unit 7 is mounted on the main board 40.

[0034] Furthermore, a pair of surface mount taps 73, 73 are mounted, for example, by soldering, on the back side of the board of the L2 antenna 7b. Meanwhile, a pair of fitting holes 45, 45 are provided on the main board 40 at positions corresponding to the surface mount taps 73, 73. The surface mount taps 73, 73 are fitted into the fitting holes 45, 45 when the GNSS antenna unit 7 is attached to the main board 40.

[0035] Fig. 14 is a perspective view showing the state immediately before the GNSS antenna unit 7 is mounted on the main board 40, and Fig. 15 is a perspective view showing the state after mounting. As shown in Fig. 14 and Fig. 15, when mounting the GNSS antenna unit 7 on the main board 40, a high-frequency circuit board 70 provided on the back surface of the L2 antenna 7b is connected to the main board 40 by a high-frequency cable 74, and then the surface mounting taps 73, 73 are fitted into the fitting holes 45, 45, and then the surface mounting taps 73, 73 are fixed by screwing bind screws 75 into them.

[0036] (5) Configuration and installation of wireless power supply unit 8 As shown in FIG. 16 and FIG. 17, the wireless power supply unit 8 is composed of a Qi board 80 and a Qi coil 81, which are connected by a harness 82, for example.

[0037] The Qi coil 81 is made of a thin coil and is arranged horizontally on the bottom surface of the bottom case 1. On the other hand, the Qi board 80 is made of a rectangular board with a small short side dimension and is attached vertically along the inner wall of the bottom case 1.

[0038] Fig. 18 shows the state immediately before the wireless power supply unit 8 is attached to the bottom case 1, and Fig. 19 and Fig. 20(a) and (b) show the state after the wireless power supply unit 8 is attached to the bottom case 1. As shown in the figures, when attaching the wireless power supply unit 8 to the bottom case 1, first, the Qi coil 81 is accommodated in a housing provided on the bottom surface of the bottom case 1, and the Qi board 80 is attached by inserting it into a groove-shaped housing provided on the inner wall of the bottom case 1. In this case, the Qi coil 81 is fixed to the bottom case 1 by applying an adhesive to the housing portion of the bottom case 1, for example.

[0039] In the wireless power supply unit 8, an electromagnetic field generated from a power transmission coil of an external wireless charging unit (not shown) is received by the Qi coil 81 to generate an electromotive force, and the Qi board 80 generates a charging current based on the generated electromotive force. The generated charging current is sent from the Qi board 80 to the main board 40 via the Qi harness 83, and is supplied to the battery pack 5 via the battery harness 51 under the control of the main board 40.

[0040] (6) Battery pack 5 storage FIG. 21 is a perspective view showing a state in which the battery pack 5 is housed in the bottom case 1. As shown in FIG.

[0041] The battery pack 5 has a thin, plate-like shape. The battery pack 5 is arranged overlapping on the Qi coil 81 of the bottom case 1. The battery harness 51 drawn out from the battery pack 5 is drawn out from the short side of the battery pack 5. With this configuration, the size of the short side of the bottom case 1 can be made as close as possible to the size of the short side of the battery pack 5, thereby making it possible to reduce the size of the bottom case 1.

[0042] (7) Installation of inner holder 3 The inner holder 3 is attached to the bottom case 1 .

[0043] Fig. 22 is a side view showing the state immediately before the inner holder 3 is attached to the bottom case 1. As shown in Fig. 22, the inner holder 3 is placed inside the Qi substrate 80. The inner holder 3 is fixed to the bottom case 1 at two short sides thereof by self-tapping screws 31, 31. Fig. 23 is a perspective view showing the state in which the inner holder 3 is attached to the bottom case 1.

[0044] (8) Installation of function knob 22 The function knob 22 has a switch section 22a for setting the operation mode of the GNSS receiver. The function knob 22 supports the switch section 22a by a translucent resin housing 22b, for example, as shown in Fig. 24. The housing 22b is made translucent so that light emitted by an LED lamp provided in the switch section 22a can be transmitted to the outside of the GNSS receiver.

[0045] The function knob 22 is attached to the inner wall surface of the top case 2. That is, an opening window for the function knob is provided on the side surface of the top case 2, and the function knob 22 is placed on the inner wall surface of the top case 2 with the switch portion 22a exposed from this opening window. The positioning at this time is performed by inserting positioning holes 22c provided in the housing 22b of the function knob 22 into multiple protrusions formed on the periphery of the opening window of the top case 2. The function knob 22 is fixed to the top case 2 by applying a waterproof adhesive to the housing 22b of the function knob 22.

[0046] (9) Installing the circuit board unit 4 in the top case 2 The board unit 4 is housed in the top case 2. FIG. 26 is a perspective view showing the state immediately before the board unit 4 is housed in the top case 2, and FIG. 27 is a side view thereof.

[0047] 26 and 27, the board unit 4 is housed so that the USB connector 21 faces an opening provided in the side surface of the top case 2. The housing operation is performed by sliding the board unit 4 along the guide inclined portions 24 formed on the inner wall surface of the top case 2 and inserting the long side portions of the main board 40 into the positioning groove portions 23 formed on the inner wall surface of the top case 2. FIG. 28 is a side view showing the state in which the board unit 4 is housed in the top case 2.

[0048] (10) Attaching Top Case 2 to Bottom Case 1 When attaching the top case 2 to the bottom case 1, first, as shown in FIG. 29, the connector of the battery harness 51 pulled out from the battery pack 5 housed in the bottom case 1 and the connector of the Qi harness 83 pulled out from the Qi board 80 are each connected to the connector of the power receiving terminal 46 provided on the main board 40.

[0049] Next, for example as shown in Figure 30, the top case 2 is attached to the bottom case 1 by fitting the edge of the top case 2 into the edge of the bottom case 1. Figure 1 shows the state after combination.

[0050] (Action and effect) As described above, the GNSS receiver according to one embodiment provides the following advantageous effects.

[0051] (1) The LTE main antenna 6a and the LTE sub-antenna 6b are attached perpendicularly to the board surface of the main board 40, respectively aligned along the mutually orthogonal short and long sides of the main board 40. This makes it possible to reduce the horizontal size of the GNSS receiver compared to when the LTE main antenna 6a and the LTE sub-antenna 6b are arranged horizontally next to each other on the main board 40.

[0052] Since the LTE main antenna 6a and the LTE sub-antenna 6b are arranged vertically to the main board 40, there is a concern that the size of the GNSS receiver in the height direction will increase. However, the main board 40 is mounted with a tall electronic device 41 and a GNSS antenna unit 7. Therefore, if the size of the short side direction of the LTE main antenna 6a and the LTE sub-antenna 6b is set within the range of the height of each of the above-mentioned components, the vertical arrangement of the LTE main antenna 6a and the LTE sub-antenna 6b will not result in an increase in the size of the GNSS receiver in the height direction.

[0053] As described above, the LTE main antenna 6a and the LTE sub-antenna 6b are disposed perpendicular to the main substrate 40, and the antennas 6a and 6b are disposed so as to be orthogonal to each other. Furthermore, a pattern forbidden area 43 is formed in an area of ​​the main substrate 40 facing the LTE main antenna 6a and the LTE sub-antenna 6b. This suppresses interference between the LTE main antenna 6a and the LTE sub-antenna 6b and the main substrate 40, and between the antennas 6a and 6b. As a result, the antenna gain of the LTE main antenna 6a and the LTE sub-antenna 6b is maintained.

[0054] That is, according to a GNSS receiver according to an embodiment, it is possible to reduce the size of the housing of the receiver while maintaining high quality of LTE wireless communication by suppressing interference.

[0055] Furthermore, electrical connection between the main board 40 and the LTE main antenna 6a and the LTE sub-antenna 6b is achieved by inserting long holes 62a, 62b provided in the LTE main antenna 6a and the LTE sub-antenna 6b into terminals 42a, 42b protruding from the main board 40. This eliminates the need for connectors for connecting the LTE main antenna 6a and the LTE sub-antenna 6b to the main board 40, and further reduces the space required for mounting the antennas 6a, 6b.

[0056] (2) The GNSS antenna unit 7 is configured such that the L1 antenna 7a is disposed on the upper surface of the L2 antenna 7b, and this GNSS antenna unit 7 is further disposed on the front surface side of the main board 40. This makes it possible to reduce the horizontal size of the board unit 4, and therefore the GNSS receiver.

[0057] Furthermore, the high-frequency circuits such as the LNA 71 are mounted not on the L2 antenna board but on a dedicated high-frequency circuit board 70, and this high-frequency circuit board 70 is attached to the back side of the board of the L2 antenna 7b by adhesive. This allows for greater freedom in designing the GNSS antenna unit 7 compared to when high-frequency circuits such as the LNA 71 are directly formed on the board of the L2 antenna 7b.

[0058] Moreover, the high-frequency circuit board 70 and the L1 antenna 7a and the L2 antenna 7b are electrically connected by a power supply pin 72 that penetrates between the high-frequency circuit board 70 and the L1 antenna 7a and the L2 antenna 7b. This makes it possible to eliminate the need for a connector for connecting the high-frequency circuit board 70 and the L1 antenna 7a and the L2 antenna 7b, thereby enabling the GNSS antenna unit 7 to be miniaturized in the height direction. In other words, the GNSS antenna unit 7 can be kept compact while increasing the degree of freedom in design.

[0059] Furthermore, when mounting the GNSS antenna unit 7 on the main board 40, the GNSS antenna unit 7 is fixed to the main board 40 by screwing bind screws 75, 75 from the main board 40 side into surface mount taps 73, 73 provided on the board surface of the L2 antenna 7b. This eliminates the need to provide screw holes for fastening the screws in the GNSS antenna unit 7, making it possible to mount the GNSS antenna unit 7 on the main board 40 while preventing adverse effects on the L2 antenna.

[0060] Furthermore, as described above, high-frequency circuits such as the LNA 71 are formed on a dedicated high-frequency circuit board 70, and the high-frequency circuit board 70 and the main board 40 are connected by a high-frequency cable 74. This makes it possible to easily switch the connection of the high-frequency circuit board 70 to the external GNSS antenna, even if it becomes necessary to use an external ranging satellite antenna in the future to receive GNSS signals of another frequency band (e.g., L5).

[0061] (3) The wireless power supply unit 8 is constructed separately from the Qi board 80 and the Qi coil 81, of which the Qi coil 81 is housed horizontally within the bottom case 1 and the Qi board 80 is arranged vertically along the inner wall surface of the bottom case 1.

[0062] This increases the degree of freedom in arranging the wireless power supply unit 8, and enables it to be housed compactly in the bottom case 1. In particular, by vertically arranging the Qi board 80 along the inner wall surface of the bottom case 1, it is possible to reduce the widthwise size of the bottom case 1, that is, the size of the GNSS receiver, compared to a case in which the Qi board 80 is horizontally arranged in the bottom case 1 together with the Qi coil 81.

[0063] (4) The battery harness 51 of the battery pack 5 is pulled out from the short side of the battery pack 5. This makes it possible to set the size of the short side of the bottom case 1 to match the size of the short side of the battery pack 5, thereby making it possible to reduce the size of the short side of the bottom case 1 compared to, for example, a case in which the battery harness 51 is pulled out from the long side of the battery pack 5.

[0064] (5) The wireless power supply unit 8 and the battery pack 5 are housed in the bottom case 1, and the board unit 4 is housed in the top case 2, and in this state, the top case 2 is attached to the bottom case 1. This makes it easier to assemble the GNSS receiver compared to a case in which the top case 2 is placed over the bottom case 1 with all units attached to it, and also makes it less likely that misalignment of the attached units will occur, making it possible to provide a GNSS receiver with high structural reliability.

[0065] [Other embodiments] In the embodiment, the LTE main antenna 6a and the LTE sub-antenna 6b are arranged in an L shape adjacent to the short side and the long side of the main board 40, but the LTE main antenna 6a and the LTE sub-antenna 6b may be arranged apart from each other by adjusting the arrangement position of the LTE sub-antenna 6b on the long side of the main board 40. In this way, it is expected that the interference between the LTE main antenna 6a and the LTE sub-antenna 6b can be further reduced.

[0066] In the above embodiment, the LTE main antenna 6a and the LTE sub-antenna 6b are used as the wireless communication antenna unit, but a 5G compatible antenna may be used. Furthermore, the L1 antenna 7a and the L2 antenna 7b are used as the GNSS antenna unit, but an L5 antenna may be added.

[0067] In addition, the configurations of the LTE main antenna 6a and the LTE sub-antenna 6b, the configuration of the GNSS antenna unit and its mounting structure to the main board 40 and electrical connection means, the configuration of the wireless power supply unit 8 and its mounting structure to the bottom case 1, etc. can be modified in various ways without departing from the gist of the present invention.

[0068] Although the embodiment of the present invention has been described in detail above, the above description is merely an example of the present invention in every respect. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. In other words, in implementing the present invention, specific configurations according to the embodiment may be appropriately adopted.

[0069] In short, this invention is not limited to the above-mentioned embodiment as it is, and in the implementation stage, the components can be modified and embodied without departing from the gist of the invention. In addition, various inventions can be formed by appropriately combining multiple components disclosed in the above-mentioned embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, components from different embodiments may be appropriately combined. [Explanation of symbols]

[0070] 1. Bottom case 2. Top case 3…Inner holder 4... Circuit board unit 5. Battery pack 6a…LTE main antenna 6b…LTE sub-antenna 7…GNSS antenna unit 7a…L1 antenna 7b…L2 antenna 8...Wireless power supply unit 21…USB connector 22…Function knob 22a…Switch section 22b…Function knob housing 22c…Positioning hole 23… Positioning groove 24…Inclined guide section 31…Self-tapping screw 40…Main circuit board 41...Electronic devices 42a, 42b...protruding terminal portion 43...Pattern prohibited area 44a, 44b...Notch 45…Mating hole 46…Power receiving terminal 51…Battery harness 60...Antenna board 61…LTE antenna element pattern 62a, 62b…long hole part 70...High frequency circuit board 71...Low noise amplifier (LNA) 72a, 72b...Power supply pins 73a, 73b…Surface mount tap 74...High frequency cable 75…Binding screw 80…Qi board 81…Qi coil 82…Harness 83…Qi harness

Claims

1. a housing including a bottom case and a top case attached to the bottom case; a rectangular, flat main board housed inside the housing; a ranging satellite antenna unit disposed in a state overlapping a first surface, which is an upper surface side of the main board; a planar antenna unit for wireless communication arranged vertically along a side of the main board; a plate-shaped battery that is accommodated between a second surface of the main board opposite to the first surface and the bottom case and supplies power to the main board; Equipped with The ranging satellite antenna unit includes: a structure in which a first planar antenna for receiving a first ranging signal transmitted from a ranging satellite and a second planar antenna for receiving a second ranging signal transmitted from the ranging satellite are superimposed on each other; a high-frequency circuit board on the rear side of the second planar antenna, the high-frequency circuit board including a high-frequency circuit for receiving and processing the first ranging signal and the second ranging signal received by the first planar antenna and the second planar antenna, respectively; a high-frequency cable connecting the high-frequency circuit board and the main board; have Satellite positioning receiver.

2. 2. The satellite positioning receiver according to claim 1, wherein the horizontal size of the second planar antenna is set so that the two paired ends of the second planar antenna abut against the inner wall surface of the top case when the ranging satellite antenna unit is housed within the top case.

3. The ranging satellite antenna unit includes: a high-frequency circuit board on which a high-frequency circuit is mounted, the high-frequency circuit being disposed on the rear side of the second planar antenna and configured to receive and process the first ranging signal and the second ranging signal received by the first planar antenna and the second planar antenna, respectively; a power feed pin that is provided so as to penetrate from the high frequency circuit board through the second planar antenna and the first planar antenna, and electrically connects the high frequency circuit board to the first planar antenna and the second planar antenna; 2. The satellite positioning receiver of claim 1, further comprising:

4. 2. The satellite positioning receiver according to claim 1, wherein the antenna unit for the ranging satellite has a surface-mounted tap provided on the back side of the second planar antenna, and is mechanically fixed to the main board by attaching a tap screw to the tap through the main board.

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