Miniaturized combined communication navigation antenna

Abstract

The utility model discloses a miniaturized combined communication navigation antenna, which comprises a circuit board, and an air microstrip measuring antenna, a 4G Bluetooth combined antenna and an LORA antenna which are respectively connected on the circuit board from inside to outside, the top surfaces of the air microstrip measuring antenna, the 4G Bluetooth combined antenna and the LORA antenna are not positioned on the same plane, the LORA antenna adopts a vertical loop antenna, and the air microstrip measuring antenna, the 4G Bluetooth combined antenna and the LORA antenna are arranged on the same plane. A circuit of the air microstrip measurement antenna adopts a four-feed-point bridge coupling sheet feeding mode; the antenna of the utility model adopts a separated non-planar structural design, can increase the spatial distance, improve the isolation between the air microstrip measuring antenna and the 4G Bluetooth combined antenna, reduce the influence of the 4G antenna on the phase center of the air microstrip measuring antenna, and adopts the vertical loop antenna to form an LORA combined navigation antenna or a 4G communication combined navigation antenna, thereby improving the antenna performance. And in the 4G full-band, the standing wave is relatively low, the efficiency is relatively high, the communication transmission speed is high, and the omnidirectional performance of the antenna is improved.

Description

Technical Field

[0001] The utility model relates to the field of antennas, in particular to a miniaturized combined communication and navigation antenna. Background Art

[0002] With the development of the surveying and mapping industry, equipment terminals have evolved from single positioning functions to multi-functional communication, transmission and positioning information terminals, including LORA plus positioning terminal, short message plus positioning terminal, 4G plus positioning terminal, etc., but most of them are equipped with various external antennas, which makes it impossible to miniaturize and integrate the products.

[0003] At present, traditional antennas use single-layer radiation plates, which results in poor received signal strength. In addition, traditional antennas use PIFA multi-branch product design, which results in narrow bandwidth and low efficiency. They cannot meet the requirements of navigation positioning and short messages at the same time, and positioning will be affected and fail when Beidou short messages are working in a high-efficiency manner. Utility Model Content

[0004] The utility model aims to provide a miniaturized combined communication and navigation antenna to solve the problems of poor received signal strength of single-layer radiating antenna and narrow bandwidth and low efficiency of PIFA multi-branch product design proposed in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A miniaturized combined communication and navigation antenna, comprising:

[0007] Circuit board; and an air microstrip measurement antenna, a 4G Bluetooth combination antenna and a LORA antenna respectively connected to the circuit board from the inside to the outside;

[0008] Among them, the top surfaces of the air microstrip measurement antenna, the 4G Bluetooth combination antenna and the LORA antenna are not in the same plane, the LORA antenna adopts a vertical loop antenna, and the LORA antenna has a metal antenna radiation plate, the long side of the metal antenna radiation plate is longer than a quarter wavelength and the short side is a quarter wavelength; the circuit of the air microstrip measurement antenna adopts a four-feed point bridge coupling plate feeding method, the 4G Bluetooth combination antenna is composed of an orthogonally arranged 4G antenna and a Bluetooth antenna, and a support is installed at the bottom of the 4G Bluetooth combination antenna.

[0009] Preferably, the 4G antenna adopts a non-closed loop LOOP type antenna, and the 4G antenna consists of a first 4G antenna and a second 4G antenna.

[0010] Preferably, the Bluetooth antenna adopts a PIFA antenna, and the Bluetooth antenna consists of a first WIFI antenna and a second WIFI antenna.

[0011] Preferably, a coaxial middle column is installed in the middle of the air microstrip measurement antenna, and both the upper and lower layers of the air microstrip measurement antenna have radiation surfaces.

[0012] Preferably, the air microstrip measurement antenna, the 4G Bluetooth combination antenna and the LORA antenna all have an antenna dielectric substrate; the dielectric substrates of the air microstrip measurement antenna, the 4G Bluetooth combination antenna and the LORA antenna all have a circular ring structure when viewed from above.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model adopts a separate non-coplanar structural design for the 4G Bluetooth combination antenna, LORA antenna and air microstrip measurement antenna, which can increase the spatial distance and improve the isolation between the air microstrip measurement antenna and the 4G Bluetooth combination antenna, reduce the influence of the 4G antenna on the phase center of the air microstrip measurement antenna, and adopt a vertical loop antenna. The radiating surface improves the working bandwidth through coupled feeding and high and low frequency design double resonance to form a LORA combined navigation antenna or a 4G communication combined navigation antenna. In addition, the loop antenna and LOOP feeding form enable the product to excite multiple resonances, with lower standing waves and higher efficiency in the full 4G frequency band, high communication transmission speed, and improved antenna omnidirectionality to meet practical requirements.

[0015] 2. The utility model adopts a single-antenna multi-4G Bluetooth combination antenna, a LORA antenna and an air microstrip measurement antenna system design, an air microstrip solution, and a coupled feeding solution to achieve single-antenna left-right rotation multi-system operation. In addition, the LOOP antenna solution is adopted to achieve a miniaturized design of 4G plus Bluetooth antenna plus LORA, thereby designing a multi-system combined antenna to solve the problem of compatibility of multi-antenna systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural stereogram of the miniaturized combined communication and navigation antenna of the utility model;

[0017] Figure 2 For this utility model Figure 1 A top view of the structure;

[0018] Figure 3 It is a top view of the structure of the circuit board of the utility model;

[0019] Figure 4 For this utility model Figure 2 The main view of the structure;

[0020] Figure 5 This is a structural stereogram of the LORA antenna of the utility model;

[0021] Figure 6 This is a structural stereogram of the utility model 4G Bluetooth combination antenna;

[0022] Figure 7 It is a structural stereogram of the air microstrip measurement antenna of the utility model.

[0023] In the figure: 1 circuit board, 101 through hole, 2 LORA antenna, 21 metal antenna radiation plate, 211 long side, 212 short side, 34G Bluetooth combination antenna, 301 first 4G antenna, 302 second 4G antenna, 303 first WIFI antenna, 304 second WIFI antenna, 305 pillar, 4 air microstrip measurement antenna, 401 feeding point, 402 middle pillar, 5 shielding cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-7, which provides a technical solution for the utility model, a miniaturized combined communication and navigation antenna, comprising a circuit board 1, and an air microstrip measurement antenna 4, a 4G Bluetooth combination antenna 3 and a LORA antenna 2 which are respectively vertically connected to the circuit board 1 from the inside to the outside, a shielding cover 5 is provided at the bottom of the circuit board 1, and a through hole 101 is arranged on the board body of the circuit board 1; wherein, the top surfaces of the air microstrip measurement antenna 4, the 4G Bluetooth combination antenna 3 and the LORA antenna 2 mentioned are not in the same plane, and the 4G antenna, the LORA antenna 2 and the air microstrip measurement antenna 4 are designed separately, and the isolation between the air microstrip measurement antenna 4 and the 4G antenna is improved through the non-coplanar structural setting and the increase in spatial distance, and the influence of the 4G antenna on the phase center of the air microstrip measurement antenna 4 is reduced; wherein, the LORA antenna 2 mentioned adopts a vertical loop antenna, and the LORA antenna 2 has a metal antenna radiating plate 21, and the long side 211 of the metal antenna radiating plate 21 is longer than a quarter wavelength and the short side 212 is a quarter wavelength, and the double resonance improves the working bandwidth, and in addition, the loop antenna such as the LORA antenna 2 and the 4G antenna are separated. The LOOP feeding form of the G Bluetooth combination antenna 3 can improve the omnidirectionality of the miniaturized combined communication and navigation antenna and meet practical requirements; the circuit of the air microstrip measurement antenna 4 adopts a four-feed point 401 bridge coupling plate feeding method. The upper and lower layers of the air microstrip measurement antenna 4 have radiating surfaces, which can adjust the height of the radiating surface, adjust the capacitance value of the feeding, and cancel out the inductance brought by the probe, thereby improving the effective standing wave bandwidth and gain bandwidth of the miniaturized combined communication and navigation antenna; the upper and lower radiating surfaces are double-layer radiating plate resonances, and the upper and lower layers respectively realize high and low The resonance of the high and low frequencies is achieved by the same excitation mode, so that the beam widths of the low frequency 1.2GHz and the high frequency 1.5GHz are both above 90-100 degrees, meeting the requirements of wide-beam navigation antennas. Among them, a four-feed-point 401 bridge coupling plate feeding method is adopted, the bridge is a 3DB bridge, and the air microstrip measurement antenna 4 can achieve left-right circular polarization of the antenna through the dual-port shift of the bridge. The standing wave bandwidth of the product is 1.55G-1.63G, which satisfies the standing wave less than 1.2, and the dual-port output isolation is above 15dB after the bridge.

[0026] In this embodiment, the 4G Bluetooth combination antenna 3 is composed of an orthogonally arranged 4G antenna and a Bluetooth antenna. A support 305 is installed at the bottom of the 4G Bluetooth combination antenna 3. The top view of the 4G Bluetooth combination antenna 3 is a circular ring structure. The setting of the support 305 can allow the 4G Bluetooth combination antenna 3 to be stably installed on the circuit board 1. The air microstrip measurement antenna 4, the 4G Bluetooth combination antenna 3 and the LORA antenna 2 all have an antenna dielectric substrate. The top view of the dielectric substrate of the air microstrip measurement antenna 4, the 4G Bluetooth combination antenna 3 and the LORA antenna 2 are all circular ring structures. Antenna 4, 4G Bluetooth combination antenna 3 and LORA antenna 2 are all configured as vertical loop antennas, which can form a LORA combination navigation antenna or a 4G communication combination navigation antenna; the 4G antenna adopts but is not limited to a non-closed loop LOOP type antenna, and the mentioned 4G antenna is composed of a first 4G antenna 301 and a second 4G antenna 302, and a feeding point and a grounding point are installed in the middle of the first 4G antenna 301 and the second 4G antenna 302; wherein, the mentioned Bluetooth antenna adopts but is not limited to a PIFA antenna, and the Bluetooth antenna is composed of a first WIFI antenna 303 and a second WIFI antenna 304.

[0027] In this embodiment, a coaxial intermediate column 402 is installed in the middle of the air microstrip measurement antenna 4. The upper and lower layers of the air microstrip measurement antenna 4 have radiation surfaces, which are respectively responsible for the low frequency and high frequency of the air microstrip measurement antenna 4; the circuit of the air microstrip measurement antenna 4 adopts a four-feed point 401 bridge coupling plate feeding method, wherein the high frequency is realized by bridge coupling to achieve left and right circular polarization, completing the working requirements of Beidou positioning and Beidou short message transmission, and a coaxial intermediate column 402 is installed in the middle, reserving a Beidou short message S receiving antenna.

[0028] The miniaturized combined communication and navigation antenna has an antenna installation process from the inside out, which includes the air microstrip measurement antenna 4, the 4G antenna and the wifi antenna, and finally the LORA antenna 2. A short message transceiver antenna can be added according to project needs without affecting the use of the above three systems. The antenna is designed as a module, and the product can be increased or decreased according to the needs of each project, with good design versatility and flexibility.

[0029] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be understood that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. In the utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components; among them, there are many ways of detachable installation, for example, it can be through the method of plug-in and snap-fit, for example, through the method of bolt connection, etc.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A miniaturized combined communication and navigation antenna, characterized in that: include: Circuit boards; And the air microstrip measurement antenna, 4G Bluetooth combination antenna and LORA antenna are connected to the circuit board from the inside to the outside; Among them, the top surfaces of the air microstrip measurement antenna, the 4G Bluetooth combination antenna and the LORA antenna are not in the same plane, the LORA antenna adopts a vertical loop antenna, and the LORA antenna has a metal antenna radiation plate, the long side of the metal antenna radiation plate is longer than a quarter wavelength and the short side is a quarter wavelength; the circuit of the air microstrip measurement antenna adopts a four-feed point bridge coupling plate feeding method, the 4G Bluetooth combination antenna is composed of an orthogonally arranged 4G antenna and a Bluetooth antenna, and a support is installed at the bottom of the 4G Bluetooth combination antenna.

2. The miniaturized combined communication and navigation antenna according to claim 1, characterized in that: The 4G antenna adopts a non-closed loop LOOP type antenna, and the 4G antenna consists of a first 4G antenna and a second 4G antenna.

3. The miniaturized combined communication and navigation antenna according to claim 1, characterized in that: The Bluetooth antenna adopts a PIFA antenna, and the Bluetooth antenna is composed of a first WIFI antenna and a second WIFI antenna.

4. The miniaturized combined communication and navigation antenna according to claim 1, characterized in that: A coaxial middle column is installed in the middle of the air microstrip measurement antenna, and both the upper and lower layers of the air microstrip measurement antenna have radiation surfaces.

5. The miniaturized combined communication and navigation antenna according to claim 1, characterized in that: The air microstrip measurement antenna, the 4G Bluetooth combination antenna and the LORA antenna all have an antenna dielectric substrate; the dielectric substrates of the air microstrip measurement antenna, the 4G Bluetooth combination antenna and the LORA antenna all have a circular ring structure when viewed from above.

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