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A power detection circuit and terminal
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A power detection circuit and terminal technology, applied in the field of communication, can solve the problems of increasingly high layout design requirements and inability to meet application requirements, and achieve the effect of ensuring accuracy
Active Publication Date: 2021-03-23
VIVO MOBILE COMM CO LTD
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Problems solved by technology
[0004] However, with the trend of smaller and smaller terminal sizes, the layout design requirements for signal detection and power detection are getting higher and higher, and the existing designs can no longer meet the application requirements.
Method used
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Embodiment 1
[0053] Figure 4 It is a first circuit structure diagram of a power detection circuit provided by an embodiment of the present invention.
[0054] Such as Figure 4 As shown, connect the RX of LTE and NR to the first switch module, and connect the TRX of LTE and NR to the second switch module. After the first switch module and the second switch module are switchably connected to the 4 antennas by controlling the directional coupler at port 7, the TRX can freely switch between the 4 antennas and complete the power detection at the same time.
[0055] The power detection circuit in the embodiment of the present invention includes: a radio frequency transceiver module, a radio frequency front-end module connected to the radio frequency transceiver module, a first switch module, a second switch module and a directional coupler;
[0056] The RF front-end module includes 6 receiving sub-modules (ie 3 NR Rx modules and 3 LTE Rx modules) and 4 transceiver sub-modules (ie 3 NRTRx mod...
Embodiment 2
[0075] Figure 5 A second circuit structure diagram of a power detection circuit provided by an embodiment of the present invention is shown.
[0076] The difference from Embodiment 1 is that the position of the directional coupler, in one example, is as Figure 4 As shown, the position of the directional coupler is integrated in the first switch module. Of course, in another example (not shown in the figure), the position of the directional coupler can also be integrated in the second switch module.
Embodiment 3
[0078] Figure 6 A third circuit structure diagram of a power detection circuit provided by an embodiment of the present invention is shown.
[0079] The difference from Embodiment 1 is that the positions of the transmitting sub-module, the second switch module and the directional coupler in the radio frequency front-end module are changed. Specifically, at least one transmitting sub-module in the radio frequency front-end module, the second switch module and the directional coupler are integrated in the first switch module, which reduces the area of the power detection circuit and reduces the manufacturing cost.
[0080] Thus, based on Figure 3-Figure 6 It can be seen that the position of the directional coupler can be adjusted according to the actual application scenario.
[0081] Therefore, in the embodiment of the present invention, when the terminal is actually used, it is guaranteed to support free switching between multiple antennas and ensure the accuracy of power...
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Abstract
Disclosed in the embodiments of the present disclosure are a power detection circuit and a terminal. The power detection circuit comprises: a radio frequency transceiving module, a radio frequency front-end module connected to the radio frequency transceiving module, a first switch module, a second switch module and a directional coupler. The radio frequency front-end module comprises at least one receiving sub-module and at least one transmitting sub-module. The at least one receiving sub-module is connected, in a switchable manner, to at least two antennas of the terminal by means of the first switch module. The first switch module is connected to the second switch module by means of the directional coupler. The at least one transmitting sub-module is connected, in a switchable manner, to a first end of the directional coupler by means of the second switch module. A second end of the directional coupler is connected, in a switchable manner, to the at least two antennas. A third end of the directional coupler is connected to the radio frequency transceiving module.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular, to a power detection circuit and a terminal. Background technique [0002] In recent years, multiple-input multiple-output system (Multiple-Input Multiple-Output, MIMO) has become one of the important means of guaranteeing the performance of wireless communication systems, and is widely used in various wireless communication systems and communication standards, especially in the fifth generation mobile Communication technology (5th-Generation, 5G) and various types of communication terminals. [0003] At present, in the power detection scenario in the non-standalone (NSA) of the 5G network, in order to ensure the normal use of the user, the terminal needs to perform power detection on the transmission power. The main implementation method is to connect to each antenna A signal detection module is set on the path to measure the signal transmissi...
Claims
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Application Information
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