A Calibration Method for Digital-Analog Mixed Power Dynamic Distribution Network

Abstract

This invention discloses a digital-analog mixed power dynamic distribution network, and a calibrating method thereof. An orthogonal random sequence cluster is adopted; an orthogonal zero-correlation sequence cluster is used as calibrating signals; only one path of the calibrating signal is coupled at an input port; the calibrating signals are decoupled by using the cross-correlation orthogonal property of the orthogonal zero-correlation sequence in a zero-correlation area; at the same time, since self-correlation has high processing gain property in the zero-correlation area and the transmitting power of the calibrating signals is reduced in engineering, the normal performance of a circuit is not affected when calibrating. Since a Butler matrix and a channel error compensation are inputted by a digital mode, the given digital-analog mixed power dynamic distribution network is characterized in distributing output power as required, measuring channel amplitude and phase error online in rea time, compensating channel error online in rea time, and so on; and thus, the excellent performance of the network is ensured.

Description

technical field [0001] The invention relates to the fields of communication, radar, and sonar engineering, in particular to a digital-analog mixed power dynamic distribution network and its calibration method, which are widely applicable to the fields of communication, radar, and sonar engineering, and especially require dynamic power distribution with multiple inputs and multiple outputs Engineering applications such as systems and transmit beamforming networks. Background technique [0002] Mobile communication systems generally use multiple spot beams to achieve wide-area coverage, enhance radiation gain, and support mobile communication services for small terminals. For example, a typical Thuraya communication satellite forms 245 spot beams, and an Imarsat4 communication satellite forms 228 spot beams. Due to the uneven distribution of population and economic development in different beam coverage areas, the distribution of communication traffic in different beams is als...

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Problems solved by technology

[0004] At present, the common power dynamic distribution network is based on the analog Butler matrix and power amplifiers. The disadvantage is that there is coupling between the channels, resulting in crosstalk between signals, and it is difficult to perform real-time online calibration.

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