CN217216570U

CN217216570U - Antenna combining device

Info

Publication number: CN217216570U
Application number: CN202221183153.0U
Authority: CN
Inventors: 丁哲壮; 马英兴
Original assignee: Dalian Gongjin Technology Co ltd
Current assignee: Dalian Gongjin Technology Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-08-16
Anticipated expiration: 2032-05-16

Abstract

The embodiment of the application provides antenna combining equipment, which comprises an antenna access unit, a combining unit, a GPS unit and a control unit; the antenna access unit comprises a first access device and a second access device, a first combiner pin of the combiner unit is externally connected with an external GPS antenna through the first access device, and a second combiner pin of the combiner unit is externally connected with the internal GPS antenna through the second access device; the combiner unit is connected with the GPS unit through a third combiner pin; the first pin of the GPS unit is connected with the third combiner pin of the combiner unit, and the output pin of the GPS unit outputs a signal to the control unit. According to the radio frequency signal combiner, the built-in GPS antenna and the external GPS antenna are combined and output through the combining unit, the antennas do not need to be switched, operation is facilitated, and the use cost is reduced. In addition, the clock synchronization of the base station and the satellite can be completed through the control unit.

Description

Antenna combining device

Technical Field

The application relates to the field of signal processing, in particular to antenna combining equipment.

Background

At present, the main clock synchronization method is a Global Positioning System (GPS) synchronization method, but the strength of the received GPS signal is also affected according to different deployment environments of the base station. At present, in the use of a small base station, two use modes of an internal GPS antenna and an external GPS antenna are available, the internal GPS antenna does not need to be deployed when being installed, the installation process and the use process are very convenient, but the received GPS antenna signal is weak in an indoor environment. The external GPS antenna can receive good GPS signals in an indoor environment by adopting a radio frequency remote mode, but the external GPS antenna is complex in installation process, high in cost and inconvenient to use. Therefore, in the prior art, signals are received by switching the internal GPS antenna and the external GPS antenna, but the switching process is very complicated and increases the use cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an antenna closes way equipment, concrete scheme is as follows:

the embodiment of the application provides an antenna combining device, the antenna combining device comprises an antenna access unit, a combining unit, a GPS unit and a control unit:

the antenna access unit comprises a first access device and a second access device, a first combiner pin of the combiner unit is externally connected with an external GPS antenna through the first access device, and a second combiner pin of the combiner unit is externally connected with an internal GPS antenna through the second access device;

the combiner unit is connected with the GPS unit through a third combiner pin;

the first pin of the GPS unit is connected with the third combiner pin of the combiner unit, and the output pin of the GPS unit outputs a signal to the control unit.

According to a specific embodiment disclosed in the present application, the first access device includes a first interface, a first access branch and a first capacitor;

the front end of the first interface is externally connected with an external GPS antenna, the rear end of the first interface is respectively connected with the first access branch and a first capacitor through a first node, and the first capacitor is connected with a first combining pin of the combining unit;

the second access device comprises a second interface, a second access branch and a second capacitor;

the front end of the second interface is externally connected with a built-in GPS antenna, the rear end of the second interface is respectively connected with the second access branch and a second capacitor through a second node, and the second capacitor is connected with a second combining pin of the combining unit.

According to one embodiment of the present disclosure, the first access branch comprises a first resistor, a first inductor, and a third capacitor;

one end of the third capacitor is grounded, the other end of the third capacitor is connected with the first resistor and the first inductor through a third node, one end of the first inductor is connected with the first resistor, and the other end of the first inductor is respectively connected with the first capacitor and the first interface through the first node;

the second access branch comprises a second resistor, a second inductor and a fourth capacitor;

one end of the fourth capacitor is grounded, the other end of the fourth capacitor is connected with the second resistor and the second inductor through a fourth node, one end of the second inductor is connected with the second resistor, and the other end of the second inductor is connected with the second capacitor and the second interface through the second node respectively.

According to a specific embodiment disclosed in the present application, an input terminal of the combining unit is connected to an output terminal of the first access unit via a first node through a first pin, and is connected to an output terminal of the second access unit via a second node through a second pin, and an output terminal of the combining unit is connected to an input terminal of the GPS unit through a third pin.

According to a specific embodiment disclosed in the present application, the GPS unit outputs an IPPS signal to the IPPS pin of the control unit through the second pin, and outputs a TOD signal to the UART pin of the control unit through the third pin and the fourth pin.

According to one embodiment of the present disclosure, the GPS unit includes a third resistor and a fifth capacitor;

one end of the third resistor is connected with a fifth pin of the GPS unit, the other end of the third resistor is connected with the fifth capacitor through a fifth node, and the other end of the fifth capacitor is grounded;

according to one embodiment of the present disclosure, the GPS unit includes a third inductor, a sixth capacitor, and a seventh capacitor;

a sixth pin and a seventh pin of the GPS unit are connected to an eighth pin, and are connected to the third inductor via a sixth node and a seventh node, one end of the sixth capacitor is grounded, the other end of the sixth capacitor is connected to the sixth node, one end of the seventh capacitor is grounded, and the other end of the seventh capacitor is connected to the seventh node.

According to one embodiment of the present disclosure, the combining unit includes an SP-2G + chip.

According to one embodiment disclosed herein, the GPS unit includes a MAX-7Q-0 chip.

According to a specific embodiment disclosed in the present application, the antenna combining device further includes a power supply, and the antenna access unit and the GPS unit are both connected to the power supply.

Compared with the prior art, the method has the following beneficial effects:

the application provides an antenna combining device, which comprises an antenna access unit, a combining unit, a GPS unit and a control unit; the antenna access unit comprises a first access device and a second access device, a first combining pin of the combining unit is externally connected with an external GPS antenna through the first access device, and a second combining pin of the combining unit is externally connected with the internal GPS antenna through the second access device; the combiner unit is connected with the GPS unit through a third combiner pin; the first pin of the GPS unit is connected with the third combiner pin of the combiner unit, and the output pin of the GPS unit outputs a signal to the control unit. According to the radio frequency signal combiner, the built-in GPS antenna and the external GPS antenna are combined and output through the combiner unit, the antennas do not need to be switched, operation is facilitated, and the use cost is reduced. In addition, the clock synchronization of the base station and the satellite can be completed through the control unit.

Drawings

To more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope of the present application. Like components are numbered similarly in the various figures.

Fig. 1 is a schematic structural diagram of an antenna combining device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an antenna access unit related to an antenna combining device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a combining unit related to an antenna combining device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a GPS unit related to an antenna combining device according to an embodiment of the present application.

Summary of reference numerals:

10-an antenna combining device; 110-an antenna access unit; 120-a combining unit; 130-a GPS unit; 140-control unit.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present application, are intended to indicate only specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the present application belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an antenna combining device provided in an embodiment of the present application.

The antenna combining apparatus 10 includes an antenna access unit 110, a combining unit 120, a GPS unit 130, and a control unit 140. The antenna access unit comprises a first access device and a second access device, the first combining pin of the combining unit 120 is connected with the external GPS antenna through the first access device, and the second combining pin of the combining unit 120 is connected with the internal GPS antenna through the second access device. The output ends of the first and second accessing devices are connected to the input end of the combining unit 120.

Specifically, the first access device and the second access device in the antenna access unit 110 are used for accessing signals of the external GPS antenna and the internal GPS antenna, and the combining unit 120 combines and transmits two paths of signals to the GPS unit 130 after collecting transmission signals of the internal GPS antenna and the external GPS antenna. The output end of the GPS unit 130 is connected to the input end of the control unit 140, and the control unit 140 is a main controller of the base station device and is configured to read a signal output by the GPS unit 130, so as to implement clock synchronization between the device and a satellite. In addition, the antenna access unit 110 and the GPS unit 130 are both connected to a 3.3V power supply, and access to an active GPS antenna and a passive GPS antenna can be satisfied by supplying power through the 3.3V power supply.

The GPS antenna is a terminal for positioning or navigation by receiving satellite signals.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an antenna access unit 110 related to an antenna combining device provided in the embodiment of the present application. During the concrete implementation, external GPS antenna signal is inserted to first interface J1 one end of first access device, the other end ground connection for protect first interface J1, third electric capacity C3 one end ground connection, the other end is connected first resistance R1 and first inductance L1 via the third node, first resistance R1 is connected to first inductance L1 one end, the other end is connected first electric capacity C1 and first interface J1 respectively via first node, the 3.3V power is connected to the first resistance R1 other end, for first access device power supply. One end of a second interface J2 of the second access device is connected to a built-in GPS antenna signal, the other end of the second interface J2 of the second access device is grounded and used for protecting a second interface J2, one end of a fourth capacitor C4 is grounded, the other end of the fourth capacitor C4 is connected with a second resistor R2 and a second inductor L2 through a fourth node, one end of a second inductor L2 is connected with a second resistor R2, the other end of the second inductor L2 is connected with a second capacitor C2 and the second interface J2 through a second node, the other end of the second resistor R2 is connected with a 3.3V power supply and used as a power supply of the second access device, the resistors R1 and the R2 are pull-up resistors of the second access device of the first access device respectively, and the integrity of the signal is guaranteed.

Specifically, the other ends of the first capacitor C1 and the second capacitor C2 are respectively connected to the first combining pin P1 and the second combining pin P2 of the combining unit 120, and the capacitor C1 and the capacitor C2 are used for energy storage filtering, so as to ensure the stability of power supply.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a combining unit 120 related to an antenna combining device according to an embodiment of the present application. The combining unit 120 may employ an SP-2G + chip, and by employing the SP-2G + chip, the cost of the antenna combining device 10 may be reduced, and the combining unit 120 is configured to combine two GPS antenna signals together and output the combined signal to the GPS unit 130 through the third combining pin P3.

In addition, the connection relationship of the other pins of the SP-2G + chip shown in fig. 3 is: the GND ground, the first combining pin P1 and the second combining pin P2 are respectively used for connecting a first capacitor C1 and a second capacitor C2 to receive GPS antenna signals, and the third combining pin P3 is connected to the first pin P4 of the GPS unit 130. The combining unit 120 combines the antenna signals to output to the GPS unit 130 only when receiving the internal antenna signal and the external antenna signal at the same time.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a GPS unit 130 related to an antenna combining device according to an embodiment of the present application. In specific implementation, one end of the third resistor R3 is connected to the fifth pin P8 of the GPS unit 130, the other end of the third resistor R is connected to the fifth capacitor C5 and the 3.3V power supply via the fifth node, the other end of the fifth capacitor C5 is grounded, the sixth pin P9 and the seventh pin P10 of the GPS unit are connected to the eighth pin P11, the sixth node and the seventh node are connected to the third inductor L3, the other end of the third inductor is connected to the 3.3V power supply, one end of the sixth capacitor C6 is grounded, the other end of the sixth capacitor C6 is connected to the sixth node, and one end of the seventh capacitor C7 is grounded, and the other end of the seventh capacitor C7 is connected to the seventh node. Wherein, the GPS unit can adopt a MAX-7Q-0 chip.

In addition, the connection relationship of the other pins of the MAX-7Q-0 chip shown in FIG. 3 is: GNND is grounded, the second pin P5 outputs an IPPS signal to the control unit 140, the third pin P6 is connected to the fourth resistor R4 to output a todx signal to the control unit 140, and the fourth pin P7 is connected to the fifth resistor R5 to output a todx signal to the control unit 140. The MAX-7Q-O chip has high overall sensitivity and low power consumption and can be used for accurate positioning.

The performance indexes of the GPS module mainly comprise receiving sensitivity, positioning time, position precision, power consumption, time precision and the like. The module boot positioning time is very different in different boot modes. Generally, the cold start time refers to a condition that no data helpful for positioning is stored inside the module, including ephemeris, time, and the like, and is generally within 1 packet nominally; the warm start time means that a relatively new satellite ephemeris is arranged in the module, but the time deviation is large, and is generally within 45 seconds in a nominal mode; the hot start time refers to the condition that the power-off time does not exceed twenty minutes, and the RTC time error is small. Typically within 10 seconds of nominal; the recapture time is just as if the vehicle had drilled a tunnel and the satellite was recaptured when it exited the tunnel. Typically nominally within 4 seconds.

In this application, the control unit 140 is a base station controller, which is a control and management part of a base station subsystem, located between the MSC and the BTS, and is responsible for completing wireless network management, wireless resource management, and monitoring management of a wireless base station, the control unit 140 controls the device to complete clock synchronization with a satellite by reading an IPPS signal and a TOD signal output by the GPS unit 130, and simultaneously, a control instruction can be transmitted to the GPS unit through the control unit 140 via the fifth pin.

In summary, the present application can combine the internal antenna signal and the external antenna signal to output to the GPS unit through the combining unit, and the control unit synchronizes clocks of the device and the satellite, so that a good signal strength can be received in any use scene, and the combining operation can be performed at a low cost by using the SP-2G + chip.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an antenna combiner equipment, its characterized in that, antenna combiner equipment includes antenna access unit, combiner unit, GPS unit and the control unit:

the antenna access unit comprises a first antenna access device and a second antenna access device, a first combining pin of the combining unit is externally connected with an external GPS antenna through the first access device, and a second combining pin of the combining unit is externally connected with an internal GPS antenna through the second access device;

the combiner unit is connected with the GPS unit through a third combiner pin;

2. The antenna combining device of claim 1, wherein the first access device includes a first interface, a first access branch, and a first capacitor;

3. The antenna combining device of claim 2, wherein the first access branch comprises a first resistor, a first inductor, and a third capacitor;

4. The antenna combining device of claim 2, wherein an input of the combining unit is connected to an output of the first access unit via a first node through a first pin, and is connected to an output of the second access unit via a second node through a second pin, and an output of the combining unit is connected to an input of the GPS unit via a third pin.

5. The antenna combining device of claim 1, wherein the GPS unit outputs an IPPS signal to an IPPS pin of the control unit through a second pin, and outputs a TOD signal to a UART pin of the control unit through a third pin and a fourth pin.

6. The antenna combining device of claim 1, wherein the GPS unit includes a third resistor and a fifth capacitor;

one end of the third resistor is connected with a fifth pin of the GPS unit, the other end of the third resistor is connected with the fifth capacitor, and the other end of the fifth capacitor is grounded.

7. The antenna combining device of claim 1, wherein the GPS unit includes a third inductor, a sixth capacitor, a seventh capacitor;

8. The antenna combining device of claim 1, wherein the combining element comprises an SP-2G + type chip.

9. The antenna combining device of claim 1, wherein the GPS unit includes a MAX-7Q-0 type chip.

10. The antenna combining device of claim 1, further comprising a power source, the antenna access unit and the GPS unit both being connected to the power source.