Antenna system and portable repeater

Abstract

An antenna system and a portable repeater are applied to the technical field of communication, and the antenna system comprises a receiving antenna, a transmitting antenna and a one-way amplification circuit. The receiving antenna and the transmitting antenna are located on the two sides of the one-way amplifying circuit respectively and connected with the one-way amplifying circuit. The receiving antenna and the transmitting antenna are both splayed bidirectional circularly polarized antennas comprising wave beams in two rotation directions, and the receiving antenna receives signals from a base station through the wave beam in the first rotation direction and receives signals from a terminal through the wave beam in the second rotation direction; and the transmitting antenna transmits a signal to the terminal through the wave beam in the first rotation direction and transmits a signal to the base station through the wave beam in the second rotation direction. On the premise that signal transmission is guaranteed, the antenna number is reduced, the amplifying circuit structure is simplified, the signal anti-interference capability and polarization isolation are improved, and therefore high efficiency, low cost and low complexity of an antenna system are achieved.

Description

Technical Field

[0001] This application relates to the field of mobile communication technology, specifically to an antenna system and a portable repeater. Background Technology

[0002] A repeater is a wireless signal relay product. Its basic function is to act as a radio frequency signal power amplifier, using a donor antenna (forward antenna) and a repeater antenna (backward antenna) to achieve bidirectional communication between the base station and the mobile station. Portable repeaters have the advantages of being lightweight, small in size, and portable, and can effectively extend the coverage of base stations, especially in low-traffic, wide-coverage areas or fine coverage of small areas, quickly solving signal coverage problems at a low cost.

[0003] Currently, linearly polarized antennas can only receive and transmit signals with the same polarization direction, and their interference rejection capability for signals with other polarization directions is poor. Furthermore, using two back-facing antennas to achieve bidirectional beamforming increases the antenna size and thickness.

[0004] Antennas are a crucial component of repeater systems. Portable repeaters not only require simplified circuitry but also necessitate the design of low-profile, miniaturized antenna structures. Current industry research on repeater systems utilizes two back-polarized antennas for both the receiving and transmitting ends, and processes signals through uplink and downlink amplification circuits.

[0005] However, antennas that primarily use orthogonal polarized beamforms have the following problems:

[0006] 1. Poor anti-interference capability. The signal emitted by the base station is reflected multiple times by the surrounding environment, and the polarization direction becomes unpredictable. Linearly polarized antennas can only receive and transmit signals with the same polarization direction as their own, and the reception of signals with other polarization directions is weak.

[0007] 2. Large size. In order to realize the uplink and downlink operation of the repeater, one pair of antennas is used to receive signals and another pair of antennas to transmit signals. The antenna part includes four antennas and two power dividers, which makes the entire system large in size and the manufacturing process more complex.

[0008] 3. High complexity. The bidirectional amplifier circuit structure and antenna system increase the complexity of the circuit, leading to a decrease in system efficiency and performance. Utility Model Content

[0009] At least one embodiment of this application provides an antenna system and a portable repeater to solve the problems of poor anti-interference capability, large size and high complexity of antennas in the prior art that are mainly based on orthogonal polarized beamform.

[0010] To solve the above-mentioned technical problems, this application is implemented as follows:

[0011] This application provides an antenna system, including: a receiving antenna, a transmitting antenna, and a unidirectional amplifier circuit;

[0012] The receiving antenna and the transmitting antenna are located on both sides of the unidirectional amplifier circuit and are connected to the unidirectional amplifier circuit.

[0013] Both the receiving antenna and the transmitting antenna are figure-eight bidirectional circularly polarized antennas that include two types of rotating beams. The receiving antenna receives signals from the base station through the first rotating beam and receives signals from the terminal through the second rotating beam. The transmitting antenna transmits signals to the terminal through the first rotating beam and transmits signals to the base station through the second rotating beam.

[0014] Preferably, in the antenna system described above, the time slots corresponding to the first rotating beam and the second rotating beam are different.

[0015] Preferably, in the antenna system described above, the beams on the same side of the receiving antenna and the transmitting antenna have opposite rotation directions.

[0016] Preferably, in the antenna system described above, the unidirectional amplifier circuit includes: a low-noise amplifier and a power amplifier connected in sequence;

[0017] Wherein, one end of the low-noise amplifier, away from the power amplifier, is connected to the receiving antenna; the other end is connected to one end of the power amplifier;

[0018] The end of the power amplifier furthest from the low-noise amplifier is connected to the transmitting antenna.

[0019] Specifically, the antenna system described above further includes a control unit connected to the unidirectional amplifier circuit.

[0020] Specifically, the antenna system described above also includes a power management unit for providing power supply.

[0021] Preferably, in the antenna system described above, both the receiving antenna and the transmitting antenna are configured with a low-profile miniaturized structure and are integrated with the unidirectional amplifier circuit into a single unit.

[0022] Another embodiment of this application provides a portable repeater including the antenna system described above.

[0023] Compared with the prior art, the antenna system and portable repeater provided in this application embodiment set the receiving antenna and transmitting antenna as figure-eight bidirectional circularly polarized antennas, and connects the receiving antenna and transmitting antenna through a unidirectional amplifier circuit. Under the premise of ensuring signal transmission, it is beneficial to reduce the number of antennas, simplify the amplifier circuit structure, improve the signal anti-interference capability and polarization isolation, thereby achieving high efficiency, low cost and low complexity of the antenna system. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of an antenna system according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of signal transmission in the downlink operating mode of the antenna system according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of signal transmission in the uplink operating mode of the antenna system according to an embodiment of this application.

[0028] [Explanation of Labels in the Attached Image]

[0029] 1. Receiving antenna; 2. Transmitting antenna; 3. Unidirectional amplifier circuit; 4. Base station; 5. Terminal; 6. Control unit; 7. Power management unit. Detailed Implementation

[0030] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0031] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms "and / or" in the specification and claims indicate at least one of the connected objects.

[0032] The following description provides examples and is not intended to limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the spirit and scope of this disclosure. Various procedures or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0033] Please refer to Figures 1 to 3 According to any one of the following, an antenna system provided in this application embodiment includes: a receiving antenna 1, a transmitting antenna, and a unidirectional amplifier circuit 3;

[0034] The receiving antenna 1 and the transmitting antenna are located on both sides of the unidirectional amplifier circuit 3 and are connected to the unidirectional amplifier circuit 3.

[0035] Both the receiving antenna 1 and the transmitting antenna are figure-eight bidirectional circularly polarized antennas with two types of rotating beams. The receiving antenna 1 receives signals from the base station 4 through the first rotating beam and receives signals from the terminal 5 through the second rotating beam. The transmitting antenna transmits signals to the terminal 5 through the first rotating beam and transmits signals to the base station 4 through the second rotating beam.

[0036] The antenna system in this embodiment includes a receiving antenna 1, a transmitting antenna, and a unidirectional amplifier circuit 3. The two ends of the unidirectional amplifier circuit 3 are connected to the receiving antenna 1 and the transmitting antenna, respectively. Specifically, the signal received by the receiving antenna 1 is amplified by the unidirectional amplifier circuit 3 and then transmitted to the transmitting antenna for transmission. Both the receiving antenna 1 and the transmitting antenna are figure-eight bidirectional circularly polarized antennas with two types of rotating beams. That is, the figure-eight bidirectional circularly polarized antenna can generate two types of rotating beams. The circularly polarized antenna can receive incoming waves of arbitrary polarization, and its radiated waves can also be received by any polarized antenna, exhibiting high compatibility and adaptability. It can effectively receive and transmit signals in different electromagnetic environments. By using the circularly polarized antenna as the receiving antenna 1 and the transmitting antenna to replace the donor antenna and the repeater antenna, it is possible to receive signals from the base station 4 and the terminal 5 through one antenna and transmit signals to the base station 4 and the terminal 5 through another antenna. Compared with existing horizontally polarized antennas, this reduces the number of antennas, thereby reducing the size and cost of the antenna system, reducing polarization mismatch losses in complex electromagnetic environments, and improving signal reception quality.

[0037] Preferably, the receiving antenna 1 and the transmitting antenna transmit signals from the same source through the same direction of beam rotation. Signals from different sources correspond to different beam rotation directions. Specifically, the receiving antenna 1 receives signals from the base station 4 through a first direction of beam rotation, and the transmitting antenna transmits signals to the terminal 5 through the first direction of beam rotation, realizing signal transmission from the outdoor base station 4 to the indoor terminal 5. The receiving antenna 1 also receives signals from the terminal 5 through a second direction of beam rotation, and the transmitting antenna transmits signals to the base station 4 through the second direction of beam rotation, realizing signal transmission from the indoor terminal 5 to the outdoor base station 4. That is, using beams with different rotation directions provides a larger polarization isolation value, avoiding self-oscillation of the amplifier circuit and improving the anti-interference capability of the signal.

[0038] This antenna system uses a single amplifier circuit instead of the traditional independent uplink and downlink amplifier circuits, which simplifies the circuit structure and further improves system efficiency and performance.

[0039] In summary, this application sets the receiving antenna 1 and the transmitting antenna as figure-eight bidirectional circularly polarized antennas, and connects the receiving antenna 1 and the transmitting antenna through a unidirectional amplifier circuit 3. Under the premise of ensuring signal transmission, this approach helps to reduce the number of antennas, simplify the amplifier circuit structure, improve signal anti-interference capability and polarization isolation, thereby achieving high efficiency, low cost and low complexity of the antenna system.

[0040] Preferably, in the antenna system described above, the time slots corresponding to the first rotating beam and the second rotating beam are different.

[0041] In this embodiment, the time slots corresponding to beams with different rotation directions are different, making full use of the time-division characteristics of the Time Division Duplex (TDD) system. This allows the use of a unidirectional method circuit to replace the traditional uplink and downlink amplifier circuits, thus simplifying the circuit structure. Furthermore, by ensuring that the uplink and downlink operating modes are in different time slots, base station 4 and terminal 5 are not affected by the transmission of the remaining beam.

[0042] Please refer to Figures 1 to 3 In any of the above, preferably, in the antenna system described above, the beams of the receiving antenna 1 and the transmitting antenna located on the same side have opposite rotation directions.

[0043] In this embodiment, the beams on the same side of the receiving antenna 1 and the transmitting antenna are set to opposite rotation directions, thereby further improving the isolation between the receiving antenna 1 and the transmitting antenna. In a specific embodiment, the rotation direction of the first side (forward) of the receiving antenna 1 is a first rotation direction (e.g., left-hand rotation), and the rotation direction of the second side (backward) is a second rotation direction (e.g., right-hand rotation), while the rotation direction of the first side (forward) of the transmitting antenna is a second rotation direction (e.g., right-hand rotation), and the rotation direction of the second side (backward) is a first rotation direction (e.g., left-hand rotation).

[0044] Specifically, see Figure 2 The signal transmitted by base station 4 is received by the first-rotation beam on the first side of receiving antenna 1, and after passing through unidirectional amplification circuit 3, is transmitted to terminal 5 by the first-rotation beam on the second side of transmitting antenna 2; see also Figure 3 The signal transmitted by terminal 5 is received by the second-rotation beam on the second side of receiving antenna 1, and after passing through unidirectional amplification circuit 3, it is transmitted to base station 4 by the second-rotation beam on the first side of transmitting antenna 2. This allows the uplink and downlink operating modes to be in different time slots, so that base station 4 and terminal 5 will not be affected by the transmission of the remaining beam. Furthermore, by using beams with the same rotation direction to transmit the same signal and setting beams with different rotation directions on the same side, the signal anti-interference capability and polarization isolation are improved.

[0045] Preferably, in the antenna system described above, the unidirectional amplifier circuit 3 includes: a low-noise amplifier and a power amplifier connected in sequence;

[0046] Wherein, one end of the low-noise amplifier away from the power amplifier is connected to the receiving antenna 1; the other end is connected to one end of the power amplifier;

[0047] The end of the power amplifier furthest from the low-noise amplifier is connected to the transmitting antenna.

[0048] In this embodiment, the unidirectional amplifier circuit 3 includes a low-noise amplifier and a power amplifier arranged sequentially along the receiving antenna 1 to the transmitting antenna. The low-noise amplifier is used to receive and amplify weak useful signals, improve signal strength, and suppress noise signals in the signal, thereby reducing signal loss and distortion during signal transmission, improving the signal-to-noise ratio, reducing the bit error rate, and thus improving system performance. The power amplifier is used to amplify the signal to a high power level to meet the needs of the system or device. It can also increase the output power of the signal to cover a wider propagation range and further improve the signal-to-noise ratio of the system, thereby improving signal quality and ensuring the reliability of communication.

[0049] Please refer to Figure 1 Specifically, the antenna system described above also includes a control unit 6 connected to the unidirectional amplifier circuit 3.

[0050] In this embodiment, the antenna system further includes a control unit 6 connected to the unidirectional amplifier circuit 3. Through the control unit 6, signal control can be performed, such as signal modulation, signal dynamic gain, signal output switch control, feedback control, etc., to ensure normal signal transmission.

[0051] Please refer to Figure 1 Specifically, the antenna system described above also includes a power management unit 7 for providing power supply.

[0052] In this embodiment, the antenna system further includes a power management unit 7, which can supply power to each power component (such as the control unit 6, the unidirectional amplifier circuit 3, etc.) in the entire antenna system to ensure the normal operation of the antenna system.

[0053] Preferably, in the antenna system described above, both the receiving antenna 1 and the transmitting antenna are configured with a low-profile miniaturized structure and are integrated with the unidirectional amplifier circuit 3 into a single unit.

[0054] In this embodiment, to further reduce the size of the antenna system, the receiving antenna 1 and the transmitting antenna are configured as low-profile miniaturized structures, including but not limited to: microstrip antennas, patch antennas, printed antennas, balun antennas, spiral sweetheart antennas, bent antennas, and slot antennas. Furthermore, by integrating the unidirectional amplifier circuit 3 with the receiving antenna 1 and the transmitting antenna, the size and thickness of the antenna system are further reduced, facilitating the realization of low-profile miniaturized portable devices.

[0055] Another embodiment of this application provides a portable repeater including the antenna system described above.

[0056] This embodiment provides a portable repeater including the antenna system described above. By employing the antenna system described above, the antenna system in the portable repeater can achieve signal transmission from base station 4 to terminal 5 and from terminal 5 to base station 4, while reducing the overall size and cost of the portable repeater and improving its efficiency and performance.

[0057] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An antenna system, characterized in that, include: A receiving antenna (1), a transmitting antenna, and a unidirectional amplifier circuit (3); The receiving antenna (1) and the transmitting antenna are located on both sides of the unidirectional amplifier circuit (3) and connected to the unidirectional amplifier circuit (3); Both the receiving antenna (1) and the transmitting antenna are figure-eight bidirectional circularly polarized antennas with two types of rotating beams. The receiving antenna (1) receives signals from the base station (4) through the first rotating beam and receives signals from the terminal (5) through the second rotating beam. The transmitting antenna transmits signals to the terminal (5) through the first rotating beam and transmits signals to the base station (4) through the second rotating beam.

2. The antenna system according to claim 1, characterized in that, The time slots corresponding to the first rotating beam and the second rotating beam are different.

3. The antenna system of claim 1 or 2, wherein, The beams on the same side of the receiving antenna (1) and the transmitting antenna have opposite rotation directions.

4. The antenna system of claim 1, wherein, The unidirectional amplifier circuit (3) includes a low-noise amplifier and a power amplifier connected in sequence; Wherein, one end of the low-noise amplifier away from the power amplifier is connected to the receiving antenna (1); the other end is connected to one end of the power amplifier; The end of the power amplifier furthest from the low-noise amplifier is connected to the transmitting antenna.

5. The antenna system of claim 1, wherein, Also includes: Control unit (6) connected to the unidirectional amplifier circuit (3).

6. The antenna system of claim 1, wherein, Also includes: Power management unit (7) used to provide power supply.

7. The antenna system of claim 1, wherein, Both the receiving antenna (1) and the transmitting antenna are configured with a low-profile miniaturized structure and are integrated with the unidirectional amplifier circuit (3) into a single structure.

8. A portable repeater, characterized in that, Including the antenna system as described in any one of claims 1 to 7.

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