TWI483468B - Antenna array device - Google Patents

Description

Antenna array device

The present invention relates to an antenna device, and more particularly to an antenna array device that can elastically combine a plurality of different numbers of independent antennas to form different types.

Referring to FIG. 1, an array antenna 1 of the conventional Chinese Patent No. M383828, the array antenna 1 includes a substrate 11, a sixteen radiation sheets 12 superimposed on the substrate 11 and arranged in a 4×4 checkerboard array. And a feed network 13 connecting the radiation sheets 12.

The array antenna 1 can form a high directivity in the Z direction by the radiation sheets 12, but the radiation sheets 12 are connected to the feed network in a manner that cannot be elastically combined and disassembled. 13, the array antenna 1 cannot be increased or decreased depending on the actual use, so that the entire array antenna 1 is still required to be cumbersome and inconvenient when a high gain communication state is not required; similarly, When a higher gain transmission state is required, the number of the radiation sheets 12 cannot be increased to increase the gain. In addition, since the radiation field type of the array antenna 1 cannot be dynamically adjusted in the Z direction, it is not applicable to a communication environment in which the signal source direction is different.

Accordingly, it is an object of the present invention to provide an antenna array device.

Thus, the antenna array device of the present invention comprises a power splitter unit and a plurality of antennas. The power splitter unit includes a first end and a plurality of second ends, the first end can collect energy received from the second ends, and the energy received by the first end can also be used by the second The end sends out. Each of the antennas is detachably electrically coupled to one of the second ends of the power splitter unit, and the positions of the antennas and the set angles are variable. Therefore, the antenna array device can adjust the number of the antennas by adjusting the direction of each antenna to direct the optimal signal transmission and reception direction of the antennas to a single signal source or a plurality of signal sources in different directions, and the antennas. The distance therebetween, and the power distribution between the first end of the power splitter unit and the second ends, can change the radiation pattern of the antenna array device.

The invention has the advantages that the plurality of independent antennas can be quickly disassembled and assembled, and the position and angle of each antenna can be freely adjusted to achieve the purpose of convenient use and improved reception quality.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 2, a preferred embodiment of the antenna array device of the present invention includes a power splitter unit 2, a plurality of antennas 3, and a plurality of coaxial cables 4 corresponding to each of the antennas 3, respectively. The power splitter unit 2 includes a first end 21 and a plurality of second ends 22, the first end 21 can collect energy received from the second ends 22, and the energy received by the first end 21 can also be The second terminal 22 sends out.

In the present embodiment, the number of the antennas 3 is described by four, but the actual application is not limited thereto.

The four antennas 3 are arranged in a direction X, and the distance d between each two antennas 3 is maintained at 0.7 to 0.9 operating wavelengths, so that the antennas 3 can collectively generate a radiation beam 5 facing the direction Y.

The two ends of the same length of the coaxial cable 4 are respectively locked to the antenna 3 and one of the second ends 22 of the power splitter unit 2 by an SMA connector 41, so that the position and setting of each antenna 3 The angle can be varied by the flexible coaxial cable 4, whereby the antenna array device can adjust the direction of each antenna 3 to make the optimal signal transmission and reception direction of the antenna array device face a single signal source or plural The directivity of the radiation beam 5 can be changed by adjusting the signal source in different directions, adjusting the distance d between each two adjacent antennas 3, and the power distribution between the first end 21 of the power splitter unit 2 to the second ends 22. (directivity) or radiation gain (gain).

Referring to FIG. 3, the power splitter unit 2 includes a plurality of stacked power splitters 23, and each power splitter 23 has a first end 231 and a plurality of second ends 232. In the following description, the power splitters 23 are illustrated by three, and are sequentially numbered a~c for convenience of explanation, and each power splitter 23 has two second ends 232, which are only practical applications. The number of second ends 232 may be other complex numbers other than 2, and the number of the power splitters 23 may be increased or decreased in this manner.

The second ends 232 of the power splitter a are respectively locked to the first ends 231 of the power splitters b and c, so that the power input through the first end 231 of the fraction splitter a can be equally divided The second ends 232 of the power splitters b and c are output; similarly, the power input from the second ends 232 of the power splitters b and c can also be collected in the fraction distributor a One end 231.

When the antenna array device A communicates with another device B of the distance D1, the greater the distance D1, the number of the antennas 3 needs to be increased to improve the directivity of the antenna array device A while maintaining good communication. Quality; conversely, when the distance D1 is smaller, the number of the antennas 3 and the power dividers 23 can be disassembled to reduce the lightness and convenience of use.

Referring to FIG. 4, the power splitter unit 2 includes the same three power splitters 23 as in FIG. 3, except that the power splitters 23 are connected in series with each other, and one of the second ends 232 of the power splitter a is locked. At the first end 231 of the power splitter b, and the second end 232 of the power splitter b is locked to the first end 231 of the power splitter c, so that the power splitter unit 2 does not consider itself In the case of power loss, the transmission power ratios of the second terminals 232 of the power splitters a to c are respectively 4:2:1.

Hereinafter, for convenience of explanation, the electrical connections and the antennas 3 of the power splitter unit 2 are sequentially numbered a' to d'.

When the antenna array device A needs to communicate with two devices C and D2 of different devices D and D2 in different directions (D1>D2), the antennas a' and b' pointing to the device B will be respectively Electrically coupled to the other second end 232 of the power splitters a and b via the flexible coaxial cable 4; the antennas c' and d' directed to the device C are electrically coupled to the power splitter c The second end 232, because the antennas a', b' and the antennas c', d' are oriented in different directions, the antenna array device A can simultaneously transmit and receive signals in the two different directions, and because of these The output or received power ratio of the antennas a' to d' is 4:2:1:1 (assuming that the antennas a'~d' are the same antennas), so the antenna a' and the antenna allocated to the larger transmission power are allocated. b' can be responsible for the electromagnetic signal transmission and reception of a longer distance D1 (compared to the distance D2); the same, the antenna c' and the antenna d' assigned to the smaller transmission power can be responsible for the electromagnetic signal transmission and reception of the closer distance D2, so that The antenna array device A can maintain communication with devices B, C of at least two different directions and distances.

In summary, the antenna array device A can receive or transmit signals from different direction sources by flexing the coaxial cable 4 to change the direction of the antennas 3, by elastically from the power splitter. The combination of the unit 2 and the disassembly of the individual antennas 3 allows for flexibility in both high directivity and lightness, so that the antenna array device A can achieve the object of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1. . . Array antenna

11. . . Substrate

12. . . Radiation film

13. . . Feed into the network

2. . . Power distribution unit

twenty one. . . First end

twenty two. . . Second end

twenty three. . . Power splitter

231. . . First end

232. . . Second end

3. . . antenna

4. . . Coaxial cable

41. . . SMA connector

5. . . Radiation beam

a’. . . antenna

B’. . . antenna

c’. . . antenna

D’. . . antenna

a. . . Power splitter

b. . . Power splitter

c. . . Power splitter

A. . . Antenna array device

B. . . Device

C. . . Device

d. . . distance

D1. . . distance

D2. . . distance

X. . . direction

Y. . . direction

Z. . . direction

1 is a perspective view of a conventional array antenna, illustrating that the sixteen radiating fins of the array antenna are fixed on a substrate by a feed network;

2 is a schematic diagram of a preferred embodiment of the antenna array device of the present invention, illustrating that the four antennas of the preferred embodiment are detachably electrically connected to a power splitter unit via a four-coaxial cable;

3 is a schematic diagram of communication between the preferred embodiment and a device B, illustrating that the power splitter unit includes three stacked power splitters;

4 is a schematic diagram of the preferred embodiment communicating with the device B and another device C, illustrating that the power splitters are connected in series with each other.

2. . . Power distribution unit

twenty one. . . First end

twenty two. . . Second end

3. . . antenna

4. . . Coaxial cable

41. . . SMA connector

5. . . Radiation beam

d. . . distance

X. . . direction

Y. . . direction

Claims (6)

An antenna array device includes: a power splitter unit including a first end and a plurality of second ends, wherein the first end can collect energy received from the second ends, and the energy received by the first end And transmitting, by the second ends, a plurality of antennas, each antenna being detachably electrically connected to one of the second ends of the power splitter unit, and the position and setting of each antenna The angle of the antenna array device can be adjusted by adjusting the direction of each antenna such that the optimal signal transmission and reception direction of the antennas is directed to a single signal source or a plurality of signal sources in different directions, and the antennas are adjusted. The number, the distance between the antennas, and the power distribution between the first end of the power splitter unit and the second ends may change the radiation pattern of the antenna array device; and a plurality of coaxial cables, each One end of the coaxial cable is connected to a single antenna and the other end is connected to one of the second ends of the power splitter unit, whereby each antenna can be moved or steered via the flexible coaxial cable. The antenna array device of claim 1, wherein each of the two ends of the coaxial cable is respectively connected to the antenna and the second end of the power splitter unit by an SMA connector. The antenna array device of claim 1, wherein the power splitter unit comprises a plurality of power splitters. The antenna array device of claim 3, wherein each power splitter has a first end and a plurality of second ends, the The energy received at one end can be sent equally by the second ends equally. The antenna array device of claim 3, wherein the power splitters are overlapped with each other. The antenna array device of claim 3, wherein the power dividers are connected in series with each other, whereby the single or multiple antennas allocated to the higher power are compared to the ones assigned to the lower power The antenna can be used to receive sources of signals that are farther away or weaker.