KR20220046243A - System and method for measuring antenna radiation pattern using wireless sensor - Google Patents

Abstract

The present invention relates to an antenna radiation pattern measurement technology and, more specifically, to a system and a method for measuring an antenna radiation pattern using wireless sensors, which can measure a beam pattern of an array antenna from antenna radiation strength measured by the wireless sensors by installing the wireless sensors at the array antenna or a radiation pattern measuring panel. To this end, a system for measuring an antenna radiation pattern using wireless sensors according to the present invention comprises: a plurality of beam measurement sensors attached to an antenna case in which a plurality of antennas are installed, to receive radio waves of the plurality of antennas, to receive power from voltage induced by the radio waves and to measure the radiation strength of the antennas; and a beam pattern monitoring device calculating a beam pattern of the plurality of antennas based on the radiation strength of the antennas measured by the plurality of beam measurement sensors. The present invention can monitor the antenna radiation pattern conveniently in real time.

Description

Antenna radiation pattern measuring system and method using a wireless sensor {System and method for measuring antenna radiation pattern using wireless sensor}

The present invention relates to a technique for measuring an antenna radiation pattern, and more particularly, a wireless sensor capable of measuring a beam pattern of an array antenna from the radiation intensity of the antenna measured by the wireless sensor by installing a wireless sensor in an array antenna or a radiation pattern measurement panel To a system and method for measuring an antenna radiation pattern using a sensor.

A smart antenna (beam forming antenna) is an antenna technology that can minimize the influence of an interference signal by receiving a signal in a specific direction and transmitting the signal in a specific direction using a beam forming technology.

To measure the radiation pattern of such a smart antenna, it is necessary to measure the amount of energy radiated from the smart antenna while rotating the smart antenna in the vertical and horizontal directions in the antenna measurement chamber where radio waves are blocked and absorbed.

That is, the radiation pattern of the smart antenna can be measured by fixing the receiving antenna in the antenna measuring chamber and measuring the amount of energy received from the target antenna to the receiving antenna while rotating the target antenna in vertical and horizontal directions.

In this case, in the case of a smart antenna in which a beam pattern is changed according to a set value, it is inconvenient to repeatedly measure the beam pattern by the number of combinations of the number of antennas.

Korean Patent Registration No. 10-1051964

The present invention was devised to solve the above problems, and an object of the present invention is to easily and conveniently measure the radiation status of antennas installed in the field, including smart antennas, in real time.

To this end, the antenna radiation pattern measurement system using a wireless sensor according to the present invention is attached to an antenna case in which a plurality of antennas are installed, receives the radio waves of the plurality of antennas, and receives power from a voltage induced by the radio waves to receive the radiation of the antenna. A plurality of beam measurement sensors for measuring intensities, and a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensities of the antennas measured by the plurality of beam measurement sensors.

In the antenna radiation pattern measurement system using a wireless sensor according to the present invention, a plurality of beam measurement sensors for receiving a radio wave of an antenna and receiving power from a voltage induced by the radio wave to measure the radiation intensity of the antenna are disposed so that a plurality of antennas A radiation pattern measurement panel for receiving radio waves from the arrayed antennas, and a beam pattern by the plurality of antennas based on the radiation intensity of the antennas measured by a plurality of beam measurement sensors disposed on the radiation pattern measurement panel and a beam pattern monitoring device.

A method for measuring an antenna radiation pattern using a wireless sensor according to the present invention comprises the steps of: receiving a radio wave from the array antenna and measuring the radiation intensity of the antenna by receiving power from a voltage induced by the radio wave by a plurality of wireless sensors installed in the array antenna; , and transmitting the measured antenna radiation intensity by the wireless sensor to a beam pattern monitoring device.

An antenna radiation pattern measurement system using a wireless sensor according to the present invention includes a plurality of beam measurement sensors attached to an antenna case in which a plurality of antennas are installed and receiving radio waves from the plurality of antennas to measure the radiation intensity of the antennas; and a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensity of the antenna measured by the beam measuring sensor.

In the antenna radiation pattern measurement system using a wireless sensor according to the present invention, a plurality of beam measurement sensors for receiving radio waves from the antenna and measuring the radiation intensity of the antenna are disposed, and a radiation pattern for receiving radio waves from an array antenna in which a plurality of antennas are arranged A measuring panel and a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensity of the antennas measured by the plurality of beam measuring sensors disposed on the radiation pattern measuring panel.

The method for measuring an antenna radiation pattern using a wireless sensor according to the present invention comprises the steps of: a plurality of wireless sensors installed in an array antenna or a radiation pattern measurement panel to receive radio waves from the array antenna and measure the radiation intensity of the antenna; and transmitting the measured antenna radiation intensity to a beam pattern monitoring device.

As described above, conventionally, an antenna measurement chamber is required to measure the radiation pattern of a smart antenna, and there is an inconvenience in that a measurement professional has to repeatedly measure the beam pattern as much as the number of combinations of smart antennas. However, by installing a wireless sensor in the smart antenna without expensive measuring equipment, there is an effect that the radiation pattern of the smart antenna can be easily and conveniently monitored in real time from the radiation intensity measured by the wireless sensor.

1 is a diagram schematically showing the configuration of an antenna radiation pattern measurement system using a wireless sensor according to the present invention.
Figure 2 is a view showing the internal configuration of the wireless sensor according to the present invention.
3 is a view showing an array antenna in which the wireless sensor is installed inside or outside the antenna in the antenna radiation pattern measurement system using the wireless sensor according to the present invention.
4 is a view showing a radiation pattern measurement panel in which a plurality of wireless sensors are disposed in the antenna radiation pattern measurement system using a wireless sensor according to the present invention.
5 is a view showing a state in which a plurality of radiation pattern measuring panels shown in FIG. 4 are arranged.
6 is a flowchart illustrating a method for measuring an antenna radiation pattern using a wireless sensor according to the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

In addition, the terms “…unit” and “…module” described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software.

Hereinafter, a system and method for measuring an antenna radiation pattern using a wireless sensor according to an embodiment of the present invention will be described in detail with reference to the drawings.

1 shows a schematic configuration of an antenna radiation pattern measurement system using a wireless sensor according to the present invention.

Referring to FIG. 1 , an antenna radiation pattern measurement system (hereinafter, antenna radiation pattern measurement system) using a wireless sensor according to the present invention measures an antenna 20 connected to a wireless transmitter 10 , and a beam installed in the antenna 20 . It includes a sensor 30, a beam pattern monitoring device 40 for receiving and processing the radiation intensity of the antenna from the beam measuring sensor 30, and the like.

The wireless transmission device 10 generates a wireless transmission signal and outputs it to the antenna 20 . The wireless transmitter 10 may be a base station or a repeater.

Although only one antenna 20 is connected to the wireless transmitter 10 in FIG. 1 , the wireless transmitter 10 is provided with a plurality of output terminals, so that an antenna may be connected to each output terminal.

The antenna 20 receives a wireless transmission signal from the wireless transmission device 10 and transmits the wireless signal. The antenna 20 according to the present invention is an array antenna composed of a plurality of antennas as a smart antenna.

The antenna 20 may receive a signal in a specific direction and transmit a signal in a specific direction by using a beam forming technique. When the antenna 20 outputs a beam in the main direction (a), a beam is also formed in the side (b) and the rear (c).

The beam measuring sensor 30 receives a radio wave (wireless signal) output from the antenna 20 , receives power from a voltage induced by the radio wave, and measures the radiation intensity of the antenna 20 . The beam measuring sensor 30 is a wireless sensor that measures the radiation intensity based on the radio wave received from the antenna 20 and wirelessly transmits the radiation intensity to the beam pattern monitoring device 40 .

In FIG. 1 , one beam measuring sensor 30 is installed in the antenna 20 , but a plurality of beam measuring sensors 30 are installed in the antenna 20 .

The beam pattern monitoring apparatus 40 receives the radiation intensity of the antenna 20 measured by the beam measuring sensor 30 and calculates a radiation pattern by the antenna 20 from the radiation intensity.

The beam pattern monitoring device 40 receives the radiation intensity of the antenna 20 through short-range communication from the beam measurement sensor 30 and wireless communication (LTE, LTE-A) or the Internet from the gateway 42 and the gateway 42 and a management server 44 that receives the radiation intensity of the antenna 20 through and analyzes the radiation intensity of the antenna to calculate a beam pattern by the antenna 20 .

Figure 2 shows the internal configuration of the wireless sensor according to the present invention.

2, the beam measuring sensor 30, which is a wireless sensor, includes a radio wave receiving unit 101, a matching unit 103, a rectifying unit 105, a voltage detecting unit 107, a display unit 109, a short-distance communication unit 111, etc. includes

The radio wave receiving unit 101 receives the radio wave (wireless signal) transmitted from the antenna 20 . The radio wave receiving unit 101 may be configured as a plate or sheet having a predetermined shape capable of receiving radio waves of the antenna 20, such as in the form of a dipole antenna.

Power is induced from the radio wave received by the radio wave receiver 101, and the wireless sensor may operate by the induced power.

The matching unit 103 is composed of an electric element that performs a function of matching the impedance difference between the radio wave receiving unit 101 and the rectifying unit 105 .

The rectifying unit 105 performs a function of converting the AC component of the electromagnetic wave (radio wave) output from the antenna 20 into DC.

The voltage detection unit 107 performs a function of detecting a voltage of a DC component input from the rectifying unit 105 . The voltage detected by the voltage detector 107 corresponds to the radiation intensity of the antenna.

The display unit 109 is composed of LEDs and emits light by electric power derived from the radio waves of the antenna 20 . The color of the LED is changed according to the intensity of the radio wave received by the radio wave receiver 101 .

The short-distance communication unit 111 transmits the radiation intensity corresponding to the voltage detected by the voltage detection unit 107 to the gateway 42 through short-range communication. The short-range communication unit 111 may be configured as a BLE communication module.

3 shows an array antenna in which a wireless sensor is installed in the antenna radiation pattern measurement system using a wireless sensor according to the present invention.

Referring to FIG. 3 , a plurality of antenna modules 2 are disposed in an antenna case 1 to constitute an array antenna.

The beam measuring sensor 30 is attached to the side of the array antenna, that is, at an appropriate distance from the inside or outside of the antenna case 1 that does not significantly affect the unique antenna radiation pattern. For example, if B1 and B2 operate in the antenna module 2, the LEDs of SB0, SB1, and SB2 in the beam measurement sensor 30 will emit light, and it is easy to know from this that the antenna modules of B1 and B2 are operating. can

At this time, the beam pattern monitoring device 40 may receive and process the electric field values measured by the 12 beam measuring sensors 30 to monitor the radiation status of the array antenna.

4 shows a state of a radiation pattern measuring panel in which a plurality of wireless sensors are arranged, and FIG. 5 shows a state in which a plurality of radiation pattern measuring panels shown in FIG. 4 are arranged.

Referring to FIG. 4 , a plurality of wireless sensors 30 are disposed on the radiation pattern measurement panel 24 .

When the antenna module of a specific area in the array antenna 22 operates, a beam pattern is transmitted as shown in FIG. 4 , and only the wireless sensor 30 corresponding to the area of the beam pattern responds to output a color according to the radiation intensity.

At this time, the beam pattern monitoring apparatus 40 may receive the electric field value measured by each wireless sensor 30 and calculate the amount of spatial energy at the point where the wireless sensor is located through data processing.

As shown in FIG. 5 , when a plurality of radiation pattern measurement panels 24 shown in FIG. 4 are arranged, the array antenna 22 may be positioned between the radiation pattern measurement panels 24 .

The antenna module 2 selectively operating in the array antenna 22 outputs a rear beam or a side beam together with the front beam, and the wireless sensor 30 disposed on the radiation pattern measurement panel 24 provides beams in each direction. Depending on the response, the radiation pattern of the antenna may be displayed in various colors and shapes.

At this time, similarly, the beam pattern monitoring apparatus 40 may receive the electric field value measured by each wireless sensor 30 and calculate the amount of spatial energy at the point where the wireless sensor is located through data processing.

6 shows a process of measuring an antenna radiation pattern using a wireless sensor according to the present invention.

Referring to FIG. 6 , first, when the array antenna 22 operates and transmits a wireless signal, a plurality of wireless sensors 30 installed in the array antenna 22 are each antenna module 2 constituting the array antenna 22 . A radio wave is received from (S10).

The wireless sensor 30 receives power from the voltage induced by the radio wave of the array antenna 22 while detecting the voltage of the DC component (S20), and measuring the radiation intensity corresponding to the detected voltage to monitor the beam pattern It is transmitted to (40) (S30).

The plurality of wireless sensors 30 have their own identification information and transmit their identification information together with the radiation intensity to the beam pattern monitoring apparatus 40 .

When the beam pattern monitoring device 40 receives identification information and radiation intensity from a plurality of wireless sensors 30, based on the identification information of the wireless sensor, the beam pattern monitoring device 40 can determine the radiation location from the array antenna, and analyze the radiation location and radiation intensity. It becomes possible to calculate the radiation pattern by the array antenna (S40).

In the embodiment of the present invention, the wireless sensor 30 is operated by receiving power from the radio wave of the antenna, and since it is difficult to receive operating power when the radio wave reception distance of the antenna is long, a separate battery is mounted in the wireless sensor 30 . In this way, the measurement range of the antenna radiation pattern can be expanded.

Accordingly, when the battery is embedded in the wireless sensor 30 , the wireless sensor 30 can measure the radiation status of the antenna while always operating regardless of whether the antenna is in operation.

The above detailed description should not be construed as restrictive in all respects and should be considered as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

1: antenna case 2: antenna module
10: wireless transmitter 20: antenna
22: array antenna 24: radiation pattern measurement panel
30: Beam measurement sensor (wireless sensor)
40: beam pattern monitoring device 42: gateway
44: management server 101: radio wave receiver
103: matching unit 105: rectifying unit
107: voltage detection unit 109: display unit
111: short-distance communication unit

Claims (10)

A plurality of beam measuring sensors attached to an antenna case in which a plurality of antennas are installed, receiving the radio waves of the plurality of antennas, and receiving power from a voltage induced by the radio waves to measure the radiation intensity of the antenna;
Antenna radiation pattern measurement system using a wireless sensor including a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensity of the antenna measured by the plurality of beam measurement sensors. A radiation pattern measuring panel for receiving radio waves from an antenna and receiving electric waves from an array antenna in which a plurality of antennas are arranged, in which a plurality of beam measuring sensors that receive power from the voltage induced by the radio waves and measure the radiation intensity of the antenna are arranged; ,
Antenna radiation pattern measurement using a wireless sensor including a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensity of the antennas measured by the plurality of beam measurement sensors disposed on the radiation pattern measurement panel system. 3. The method of claim 1 or 2,
The beam pattern monitoring device includes a gateway for receiving the radiation intensity of the antenna through short-distance communication from the plurality of beam measuring sensors;
and a management server that receives the radiation intensity of the antenna from the gateway, analyzes the radiation intensity of the antenna, and calculates a beam pattern by the plurality of antennas. In the method for measuring an antenna radiation pattern using a wireless sensor,
A plurality of wireless sensors installed in the array antenna receiving radio waves from the array antenna, receiving power from the voltage induced by the radio waves, and measuring the radiation intensity of the antenna;
The method comprising the step of transmitting, by the wireless sensor, the measured antenna radiation intensity to a beam pattern monitoring device. 5. The method of claim 4,
The method further comprising the step of calculating, by the beam pattern monitoring apparatus, a beam pattern by the array antenna based on the radiation intensity of the antenna received from the wireless sensor. A plurality of beam measuring sensors attached to an antenna case in which a plurality of antennas are installed and receiving radio waves from the plurality of antennas to measure the radiation intensity of the antennas;
Antenna radiation pattern measurement system using a wireless sensor including a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensity of the antenna measured by the plurality of beam measurement sensors. A radiation pattern measurement panel in which a plurality of beam measurement sensors for receiving radio waves from the antenna and measuring the radiation intensity of the antenna are disposed to receive radio waves from the array antenna in which the plurality of antennas are arranged;
Antenna radiation pattern measurement using a wireless sensor including a beam pattern monitoring device for calculating a beam pattern by the plurality of antennas based on the radiation intensity of the antennas measured by the plurality of beam measurement sensors disposed on the radiation pattern measurement panel system. 8. The method of claim 6 or 7,
The beam pattern monitoring device includes a gateway for receiving the radiation intensity of the antenna through short-distance communication from the plurality of beam measuring sensors;
and a management server that receives the radiation intensity of the antenna from the gateway, analyzes the radiation intensity of the antenna, and calculates a beam pattern by the plurality of antennas. In the method for measuring an antenna radiation pattern using a wireless sensor,
A plurality of wireless sensors installed in the array antenna or radiation pattern measurement panel, receiving radio waves from the array antenna and measuring the radiation intensity of the antenna;
The method comprising the step of transmitting, by the wireless sensor, the measured antenna radiation intensity to a beam pattern monitoring device. 10. The method of claim 9,
The method further comprising the step of calculating, by the beam pattern monitoring apparatus, a beam pattern by the array antenna based on the radiation intensity of the antenna received from the wireless sensor.

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