Control circuit and terminal achieving carrier aggregation and WIFI double-frequency MIMO

Abstract

The invention provides a control circuit achieving carrier aggregation and WIFI double-frequency MIMO and a terminal. The control circuit comprises a first antenna, a second antenna, a third antenna and a fourth antenna. The first antenna is connected to a receiving and sending device via a first switch and a first filter assembly. The second antenna is connected to the receiving and sending device via a second switch and a second filter assembly. A third antenna is connected to a third switch and a WIFI receiving and sending device via a first frequency divider. The fourth antenna is connected to a fourth switch and the WIFI receiving and sending device via a second frequency divider. In this way, in the case that the number of the whole antennas of the system is not increased, the carrier aggregation function and the WIFI double-frequency MIMO function can be achieved, and output power of a PA is not additionally increased, thereby reducing power consumption of the terminal.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a control circuit and a terminal for realizing carrier aggregation and WIFI dual-frequency MIMO. Background technique [0002] At present, China Mobile, China Unicom, and China Telecom are actively upgrading their networks and deploying CA (Carrier Aggregation). Currently, China Mobile's CA requirements are B39 (Band39) and B41 (Band41) carrier aggregation, so adopt The duplex filter scheme performs carrier aggregation, while China Unicom and China Telecom belong to FDD-LTE (Frequency Division Duplexing-Long Term Evolution, Frequency Division Duplexing-Long Term Evolution), requiring B1 (Band1)+B3 (Band3) carrier aggregation, while FDD -The LTE solution currently adopts a quadplexer solution to simultaneously receive B1 and B3 FDD-LTE signals in the downlink. [0003] In addition, most terminals (such as mobile phones) that implement carrier aggregation currently implem...

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Problems solved by technology

[0003] In addition, most terminals (such as mobile phones) that implement carrier aggregation currently implement WIFI (Wireless Fidelity, wireless broadband) dual-band SISO (SingleInputSingleOut, single-input-single-out), and few implement WIFIMIMO (MultipleInputMultipleOut, multiple input, multiple output). Mainly due to the limited space of the terminal, increasing the number of antennas makes terminal design more difficult

[0004] In the above-mentioned existing technical solutions, the cost of using a quadruplexer device is very high, and the insertion loss is too large, so that the PA (Power Amplifier, power amplifier) ​​outputs more power to compensate for the insertion loss caused by the quadruplexer, and the ACLR of the PA ( AdjacentChannelLeakageRatio, the adjacent channel leakage ratio) the greater the transmit power, the larger the current and the lower the efficiency

And when the terminal is in the non-CA state, the transmit power of the PA is still transmitted at a higher power value, resulting in unnecessary current consumption

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