Radio frequency front end and terminal device

Abstract

The present disclosure provides a radio frequency front end and a terminal device. The radio frequency front end comprises a controller, a UWB antenna and an amplification unit. The controller comprises a receiving end. The amplification unit is electrically connected with the controller, and the amplification unit comprises an amplifier connected between the receiving end and the UWB antenna. In this way, during the transmission of the electromagnetic wave signal received by the UWB antenna to the receiving end, the electrical signal transmitted by the UWB antenna to the receiving end is amplified through the amplifier, thereby facilitating the subsequent identification and processing of the electrical signal and improving the communication quality.

Description

Technical Field

[0001] This disclosure relates to the field of communications, and more particularly to a radio frequency front-end and terminal device. Background Technology

[0002] Ultra-wideband (UWB) antenna technology is a wireless technology that uses an extremely wide frequency band for communication, featuring high-precision positioning, anti-interference, and low power consumption.

[0003] In related technologies, the UWB RF front-end solution in the terminal device's chip is limited by the PCB layout, making it difficult to guarantee that the path performance of each UWB antenna meets the requirements. Furthermore, when a user holds the phone, it interferes with the UWB antenna's communication. Utility Model Content

[0004] This disclosure provides a radio frequency front-end and terminal device for improving the performance of UWB antennas.

[0005] In a first aspect, this disclosure provides a radio frequency front end, including:

[0006] The controller includes the receiver;

[0007] UWB antenna;

[0008] An amplification unit, electrically connected to the controller, includes an amplifier connected between the receiver and the UWB antenna.

[0009] Optionally, the amplification unit further includes:

[0010] A bypass circuit is connected in parallel with the amplifier;

[0011] A switching circuit is connected in series with the amplifier;

[0012] The controller also includes a transmitter, which is electrically connected to the UWB antenna via the amplification unit;

[0013] When the switching circuit is on and the bypass circuit is off, the receiver, the amplifier, and the UWB antenna are connected.

[0014] When the bypass circuit is on and the switching circuit is off, the transmitter and the UWB antenna are connected.

[0015] Optionally, the switching circuit includes a first switch and a second switch, the first switch and the second switch being connected in series with the amplifier, and the first switch, the second switch and the amplifier being connected in parallel with the bypass path.

[0016] Optionally, the controller further includes a transmitter electrically connected to the UWB antenna;

[0017] The UWB antenna further includes a first UWB antenna and a second UWB antenna. The radio frequency front end includes a gating circuit, which includes a first connection terminal, a second connection terminal, and a third connection terminal. The first connection terminal is electrically connected to the transmitting end; the second connection terminal is electrically connected to the first UWB antenna; and the third connection terminal is electrically connected to the second UWB antenna.

[0018] The gating circuit is used to connect the first connection terminal to the second connection terminal, or to connect the first connection terminal to the third connection terminal.

[0019] Optionally, the receiving end includes a first receiving end and a second receiving end.

[0020] The first receiving end is connected to the first UWB antenna, and the second receiving end is connected to the second UWB antenna.

[0021] Optionally, the gating circuit includes a fourth connection terminal and a fifth connection terminal, wherein the fourth connection terminal is connected to the first receiving terminal and the fifth connection terminal is connected to the second receiving terminal;

[0022] When the gating circuit connects the first connection terminal and the second connection terminal, and the fifth connection terminal connects the third connection terminal, the transmitting terminal connects to the first UWB antenna, and the second receiving terminal connects to the second UWB antenna;

[0023] When the gating circuit connects the first connection terminal and the third connection terminal, and the fourth connection terminal connects the second connection terminal, the transmitting terminal connects to the second UWB antenna, and the first receiving terminal connects to the first UWB antenna.

[0024] Optionally, the gating circuit includes a double-pole double-throw switch and a single-pole double-throw switch. The double-pole double-throw switch includes a first contact, a second contact, a third contact, and a fourth contact. The first contact is selectively connected to either the second contact or the fourth contact. The third contact is selectively connected to either the second contact or the fourth contact. The first contact is the first connection terminal of the gating circuit. The second contact is the second connection terminal of the gating circuit. The third contact is the fourth connection terminal of the gating circuit.

[0025] The single-pole double-throw switch includes a fifth contact, a sixth contact, and a seventh contact. The seventh contact can be selectively connected to either the fifth contact or the sixth contact. The fifth contact is electrically connected to the fourth contact. The sixth contact is the fifth connection terminal of the gating circuit, and the seventh contact is the third connection terminal of the gating circuit.

[0026] Optionally, a filter is also included, which is connected in series between the UWB antenna and the amplifier.

[0027] Optionally, the amplifier is a low-noise amplifier.

[0028] Secondly, this disclosure also provides a terminal device, the terminal device including the radio frequency front-end described in the first aspect.

[0029] Thus, during the transmission of electromagnetic wave signals received by the UWB antenna to the receiving end, the signal is amplified by an amplifier, which facilitates subsequent identification and processing of the signal and improves communication quality. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0031] Figure 1 The diagram shown is a schematic representation of an embodiment of the radio frequency front-end of this disclosure.

[0032] Figure 2 As shown Figure 1 A detailed schematic diagram of the RF front end is shown.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. RF front end; 10. Controller; 11. Receiver; 111. First receiver; 112. Second receiver; 12. Transmitter; 20. UWB antenna; 21. First UWB antenna; 22. Second UWB antenna; 30. Amplification unit; 31. Amplifier; 32. Bypass circuit; 33. Switching circuit; 331. First switch; 332. Second switch; 40. Gating circuit; 41. First connection terminal; 42. Second connection terminal; 43. Third connection terminal; 44. Fourth connection terminal; 45. Fifth connection terminal; 46. Double-pole double-throw switch; 461. First contact; 462. Second contact; 463. Third contact; 464. Fourth contact; 47. Single-pole double-throw switch; 471. Fifth contact; 472. Sixth contact; 473. Seventh contact; 50. Filter. Detailed Implementation

[0035] The technical solutions in the embodiments (or "implementations") of this disclosure will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0036] If this disclosure uses terms relating to directional indications or positional relationships (e.g., up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, terms such as "first" and "second" in this disclosure are used only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0037] This disclosure provides a radio frequency (RF) front-end and terminal device. The RF front-end and terminal device of this disclosure will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0038] This disclosure provides a terminal device. Specifically, it can be a mobile phone, tablet computer, etc. The terminal device includes a radio frequency front-end 100, which receives electromagnetic wave signals and converts them into processable electrical signals, or converts baseband signals into radio frequency signals for output, thereby enabling communication between the terminal device and other external devices.

[0039] See Figure 1 and Figure 2 As shown, the RF front-end 100 includes a controller 10, a UWB antenna 20, and an amplifier unit 30. The controller 10 includes a receiver 11. The amplifier unit 30 is electrically connected to the controller 10. The amplifier 31 module includes an amplifier 31, which is connected between the receiver 11 and the UWB antenna 20.

[0040] Thus, during the transmission of electromagnetic wave signals received by the UWB antenna 20 to the receiver 11, the signal is amplified by the amplifier 31, which facilitates the subsequent identification and processing of the signal and improves the communication quality.

[0041] In an optional embodiment, see Figure 1 and Figure 2As shown, the amplifier 31 module also includes a bypass circuit 32 and a switching circuit 33. The switching circuit 33 is connected in series with the amplifier 31 and is used to control the switching on and off of the amplifier 31. The bypass circuit 32 is connected in parallel with the amplifier 31. The controller 10 also includes a transmitter 12, which is electrically connected to the UWB antenna 20 through the amplification unit 30. When the switching circuit 33 is on and the bypass circuit 32 is off, the receiver 11, the amplifier 31, and the UWB antenna 20 are connected; when the bypass circuit 32 is on and the switching circuit 33 is off, the transmitter 12 and the UWB antenna 20 are connected. The on and off states of the switching circuit 33 and the bypass circuit 32 can be controlled by the controller 10.

[0042] By setting up a bypass path, the transmitter 12 can connect to the UWB antenna 20 without passing through amplifier 31, ensuring that the UWB antenna 20 complies with relevant regulations during use and avoids interference with other frequency bands. When the receiver 11 connects to the UWB antenna 20, the electrical signal is amplified by amplifier 31, which facilitates subsequent identification and processing of the electrical signal and improves communication quality. Amplification unit 30 can be multiplexed under different usage conditions of RF front-end 100, which is beneficial to the user experience of RF front-end 100.

[0043] In an optional embodiment, the switching circuit 33 includes a first switch 331 and a second switch 332. The first switch 331 and the second switch 332 are connected in series with the amplifier 31, and the first switch 331, the second switch 332 and the amplifier 31 are connected in parallel with the bypass path.

[0044] In this embodiment, the first switch 331 is connected to one end of the amplifier 31, and the second switch 332 is connected to the other end of the amplifier 31. In other embodiments, the first switch 331 may also be connected to one end of the second switch 332, and the amplifier 31 may be connected to the other end of the second switch 332.

[0045] Thus, the controller 10 controls the opening and closing of the first switch 331 and the second switch 332. When either the first switch 331 or the second switch 332 is opened, or when both switches 331 and 332 are opened simultaneously, the switch circuit 33 is disconnected. This ensures that when the bypass circuit 32 is on and the switch circuit 33 is off, the switch circuit 33 is disconnected, allowing the transmitter 12 to connect to the UWB antenna 20 without passing through the amplifier 31. This ensures that the UWB antenna 20 complies with relevant regulations during use and avoids interference with other frequency bands. When the first switch 331 and the second switch 332 are closed simultaneously, the switch circuit 33 is on, and the bypass circuit 32 is off, connecting the receiver 11, the amplifier 31, and the UWB antenna 20. The amplifier 31 amplifies the electrical signal, which is beneficial for subsequent identification and processing of the signal. This allows the controller 10 to control the switching circuit 33 and the bypass circuit 32 to turn on and off, ensuring the normal use of the RF front-end 100 and reducing the risk that the RF front-end 100 does not comply with relevant restrictions.

[0046] In an optional embodiment, see Figure 1 As shown, the UWB antenna 20 also includes a first UWB antenna 21 and a second UWB antenna 22. The RF front-end 100 includes a gating circuit 40, which includes a first connection terminal 41, a second connection terminal 42, and a third connection terminal 43. The first connection terminal 41 is electrically connected to the transmitter 12; the second connection terminal 42 is electrically connected to the first UWB antenna 21; and the third connection terminal 43 is electrically connected to the second UWB antenna 22.

[0047] The gating circuit 40 is used to connect the first connection terminal 41 and the second connection terminal 42 so that the transmitter 12 is connected to the first UWB antenna 21; or to connect the first connection terminal 41 and the third connection terminal 43 so that the transmitter 12 is connected to the second UWB antenna 22.

[0048] Thus, when transmitter 12 needs to output externally, it can be connected to the first UWB antenna 21 or the second UWB antenna 22 via gating circuit 40. Controller 10 can select the UWB antenna 20 that meets the external output requirements based on the current path performance with the first UWB antenna 21 and the second UWB antenna 22, thereby ensuring the communication performance between the RF front-end 100 and the outside world when the user is using a handheld terminal device, which is beneficial to the user experience of the RF front-end 100.

[0049] In an optional embodiment, see Figure 1 As shown, the gating circuit 40 includes a fourth connection terminal 44 and a fifth connection terminal 45. The fourth connection terminal 44 is connected to the first receiving terminal 111, and the fifth connection terminal 45 is connected to the second receiving terminal 112.

[0050] When the switching circuit 40 is connected to the fourth connection terminal 44 and the second connection terminal 42, the fifth connection terminal 45 is connected to the third connection terminal 43, the first receiving terminal 111 is connected to the first UWB antenna 21, and the second receiving terminal 112 is connected to the second UWB antenna 22. At this time, electromagnetic wave signals can be received through either the first UWB antenna 21 or the second UWB antenna 22 and converted into processable electrical signals.

[0051] When output is required, if the path performance of the first UWB antenna 21 is better than that of the second UWB antenna 22, the gating circuit 40 connects the first connection terminal 41 and the second connection terminal 42, the fifth connection terminal 45 connects the third connection terminal 43, the transmitting terminal 12 connects the first UWB antenna 21, and the second receiving terminal 112 connects the second UWB antenna 22.

[0052] When the path performance of the first UWB antenna 21 is better than that of the second UWB antenna 22, the gating circuit 40 connects the first connection terminal 41 and the third connection terminal 43, the fourth connection terminal 44 connects the second connection terminal 42, the transmitting terminal 12 connects the second UWB antenna 22, and the first receiving terminal 111 connects the first UWB antenna 21.

[0053] Thus, when no output is required, the controller 10 can obtain the path performance of the first UWB antenna 21 and the second UWB antenna 22 based on the electrical connection between the first receiver 111 and the first UWB antenna 21, and the electrical connection between the second receiver 112 and the second UWB antenna 22. When output is required, the controller 10 controls the gating circuit 40 to connect the better path performance of the first UWB antenna 21 and the second UWB antenna 22 to the transmitter 12 based on the path performance of the first UWB antenna 21 and the second UWB antenna 22, so that the transmitter 12 can output smoothly, reducing the risk of interference to the path performance of the UWB antenna 20 caused by the handheld terminal device, and facilitating the use of the RF front-end 100.

[0054] In an optional embodiment, see Figure 2As shown, the selection circuit 40 includes a double-pole double-throw switch 46 and a single-pole double-throw switch 47. The double-pole double-throw switch 46 includes a first contact 461, a second contact 462, a third contact 463, and a fourth contact 464. The first contact 461 can be selectively connected to either the second contact 462 or the fourth contact 464; the third contact 463 can be selectively connected to either the second contact 462 or the fourth contact 464. The single-pole double-throw switch 47 includes a fifth contact 471, a sixth contact 472, and a seventh contact 473. The seventh contact 473 can be selectively connected to either the fifth contact 471 or the sixth contact 472. The first contact 461 is the first connection terminal 41 of the selection circuit 40; the second contact 462 is the second connection terminal 42 of the selection circuit 40; and the third contact 463 is the fourth connection terminal 44 of the selection circuit 40. The fifth contact 471 is electrically connected to the fourth contact 464; the sixth contact 472 is the fifth connection terminal 45 of the gating circuit 40, and the seventh contact 473 is the third connection terminal 43 of the gating circuit 40.

[0055] When the third contact 463 is connected to the second contact 462, and the sixth contact 472 is connected to the seventh contact 473, the selection circuit 40 connects the fourth connection terminal 44 and the second connection terminal 42, the fifth connection terminal 45 connects to the third connection terminal 43, the first receiving terminal 111 connects to the first UWB antenna 21, and the second receiving terminal 112 connects to the second UWB antenna 22. At this time, electromagnetic wave signals can be received through either the first UWB antenna 21 or the second UWB antenna 22 and converted into processable electrical signals.

[0056] When output is required, if the path performance of the first UWB antenna 21 is better than that of the second UWB antenna 22, the first contact 461 and the second contact 462 are connected, the sixth contact 472 and the seventh contact 473 are connected, the transmitter 12 is connected to the first UWB antenna 21, and the second receiver 112 is connected to the second UWB antenna 22.

[0057] When the path performance of the first UWB antenna 21 is better than that of the second UWB antenna 22, the third contact 463 is connected to the second contact 462, the first contact 461 and the fourth contact 464 are connected, the fifth contact 471 and the seventh contact 473 are connected, the transmitter 12 is connected to the second UWB antenna 22, and the first receiver 111 is connected to the first UWB antenna 21.

[0058] This improves the integration of the RF front-end 100 and facilitates flexible switching between a single transmitter 12 and dual receivers 11. When output is required, the controller 10 controls the gating circuit 40 to connect the transmitter 12 to the one with better path performance between the first UWB antenna 21 and the second UWB antenna 22, based on the path performance of the first UWB antenna 21 and the second UWB antenna 22. This allows the transmitter 12 to output smoothly, reducing the risk of interference from handheld terminal devices to the path performance of the UWB antenna 20 and facilitating the use of the RF front-end 100.

[0059] In an optional embodiment, see Figure 1 and Figure 2 As shown, the RF front-end 100 also includes a filter 50, which is connected in series between the UWB antenna 20 and the amplifier 31.

[0060] In this way, reducing noise and interference in the electromagnetic wave signals received and transmitted by the UWB antenna 20 is beneficial to improving the signal-to-noise ratio of the target signal, which is beneficial to the subsequent identification and processing of electrical signals and improves communication quality.

[0061] In an optional embodiment, amplifier 31 is a low-noise amplifier 31.

[0062] In this way, while amplifying the electrical signal transmitted from the UWB antenna 20 to the receiver 11, noise and interference in the electromagnetic wave signal received by the UWB antenna 20 can be reduced, which is beneficial to improving the signal-to-noise ratio of the target signal, facilitating subsequent identification and processing of the electrical signal, and improving communication quality.

[0063] In an optional embodiment, amplifier 31 is positioned on the PCB circuit board of the terminal device near the UWB antenna 20. In specific implementations, this configuration improves the path performance by more than 3dB when the receiver 11 is connected to the UWB antenna 20.

[0064] It should be noted that the technical solutions or features described in the above embodiments can be combined or complemented by each other without conflict. The scope of protection of this disclosure is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A radio frequency front end, characterized by include: The controller includes the receiver; UWB antenna; An amplification unit, electrically connected to the controller, includes an amplifier connected between the receiver and the UWB antenna.

2. The radio frequency front end of claim 1, wherein, The amplification unit further includes: A bypass circuit is connected in parallel with the amplifier; A switching circuit is connected in series with the amplifier; The controller also includes a transmitter, which is electrically connected to the UWB antenna via the amplification unit; When the switching circuit is on and the bypass circuit is off, the receiver, the amplifier, and the UWB antenna are connected. When the bypass circuit is on and the switching circuit is off, the transmitter and the UWB antenna are connected.

3. The radio frequency front end of claim 2, wherein, The switching circuit includes a first switch and a second switch, the first switch and the second switch are connected in series with the amplifier, and the first switch, the second switch and the amplifier are connected in parallel with the bypass path.

4. The radio frequency front end of claim 1, wherein, The controller also includes a transmitter, which is electrically connected to the UWB antenna; The UWB antenna further includes a first UWB antenna and a second UWB antenna. The radio frequency front end includes a gating circuit, which includes a first connection terminal, a second connection terminal, and a third connection terminal. The first connection terminal is electrically connected to the transmitting end; the second connection terminal is electrically connected to the first UWB antenna; and the third connection terminal is electrically connected to the second UWB antenna. The gating circuit is used to connect the first connection terminal to the second connection terminal, or to connect the first connection terminal to the third connection terminal.

5. The radio frequency front end of claim 4, wherein, The receiving end includes a first receiving end and a second receiving end. The first receiving end is connected to the first UWB antenna, and the second receiving end is connected to the second UWB antenna.

6. The radio frequency front end of claim 5, wherein, The gating circuit includes a fourth connection terminal and a fifth connection terminal, the fourth connection terminal being connected to the first receiving terminal and the fifth connection terminal being connected to the second receiving terminal; When the gating circuit connects the first connection terminal and the second connection terminal, and the fifth connection terminal connects the third connection terminal, the transmitting terminal connects to the first UWB antenna, and the second receiving terminal connects to the second UWB antenna; When the gating circuit connects the first connection terminal and the third connection terminal, and the fourth connection terminal connects the second connection terminal, the transmitting terminal connects to the second UWB antenna, and the first receiving terminal connects to the first UWB antenna.

7. The radio frequency front end of claim 6, wherein, The gating circuit includes a double-pole double-throw switch and a single-pole double-throw switch. The double-pole double-throw switch includes a first contact, a second contact, a third contact, and a fourth contact. The first contact can be selectively connected to either the second contact or the fourth contact. The third contact can be selectively connected to either the second contact or the fourth contact. The first contact is the first connection terminal of the gating circuit. The second contact is the second connection terminal of the gating circuit. The third contact is the fourth connection terminal of the gating circuit. The single-pole double-throw switch includes a fifth contact, a sixth contact, and a seventh contact. The seventh contact can be selectively connected to either the fifth contact or the sixth contact. The fifth contact is electrically connected to the fourth contact. The sixth contact is the fifth connection terminal of the gating circuit, and the seventh contact is the third connection terminal of the gating circuit.

8. The radio frequency front end according to claim 1, characterized in that, It also includes a filter connected in series between the UWB antenna and the amplifier.

9. The radio frequency front end of claim 1, wherein, The amplifier is a low-noise amplifier.

10. A terminal device, comprising: The terminal device includes the radio frequency front-end as described in any one of claims 1-9.

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