Power control method of radio frequency transmission module and radio frequency transmission module

A technology of radio frequency transmission and power control, which is applied in power management, wireless communication, electrical components, etc., can solve the problems that cannot meet the carrier power accuracy requirements of each frequency band, and cannot control gain dynamic balance, and achieve the effect of improving the accuracy of transmission power

CN107529215BActive Publication Date: 2021-01-08ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-01-08

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Abstract

The invention relates to a transmission channel power control method of an RF transmission module. The method is used for controlling the power of a multi-band carrier signal. The method comprises the steps of detecting an IF digital power and an antenna port power in a transmission channel of each band of carrier; calculating a power difference of each band of carrier according to the IF digital power and the antenna port power; determining whether to adjust a gain according to the power difference of each band of carrier; if yes, determining a gain change trend of each band of carrier according to the power difference of each band of carrier; and performing corresponding gain adjustment on each band of carrier according to the gain change trend of each band of carrier. According to the transmission channel power control method of the RF transmission module, corresponding gain adjustment is performed on each band of carrier according to the gain change trend of each band of carrier, so that the power accuracy of each band of carrier can meet the requirement, and the transmission power accuracy of the RF transmission module is improved. The invention further relates to an RF transmission module.
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Description

technical field

[0001] The invention relates to the technical field of radio frequency communication equipment, in particular to a transmission channel power control method of a radio frequency transmission module and the radio frequency transmission module. Background technique

[0002] Two or more carrier signals of different frequency bands need to be transmitted in a transmission channel of a radio remote unit (Radio Remote Unit, RRU) of a multi-carrier base station. Due to the large span between carrier signals of different frequency bands, the channel gain flatness between the frequency bands is quite different. The traditional TPTL (Transmission Power Track Loop, closed-loop power control of the transmission channel) can only control the gain change of a single frequency band, but cannot control the gain dynamic balance between multiple frequency bands, so it cannot meet the power accuracy requirements of the carriers in each frequency band . Contents of the invent...

Examples

Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0013] figure 1 It is a schematic structural diagram of a radio frequency transmission module in an embodiment. The radio frequency sending module may be set in a communication base station, for example, a radio remote unit (Radio Remote Unit, RRU) in the base station. The radio frequency sending module can also be set in other mobile communication devices. The radio frequency sending module supports the transmission of ultra-wideband multi-band carrier signals. In this embodiment, the multi-band carrier signal includes at least two carriers of different frequency bands. There can also be multi...