Active integrated antenna system

Abstract

The invention discloses an active integrated antenna system. The system comprises an antenna pedestal, wherein the antenna pedestal is provided with an antenna array, a feed network, a feed power supply, a monitoring unit and a radio frequency amplification unit. The radio frequency amplification unit is connected with the feed network, the feed power supply and the monitoring unit, so that the radio frequency amplification unit is integrated in the antenna system and a signal can be actively amplified and controlled when the antenna system receives and transmits the radio frequency signal. Because an amplification circuit is integrated in an antenna, the output power is directly connected with the antenna array to be transmitted, no energy loss is caused in the process, and the power loss and increasing of noise coefficient, which are caused by feeder loss, are greatly reduced. In addition, due to the structural design of the system, the system has more advantages in both aspects of cost and reliability.

Description

technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to an active integrated antenna system. Background technique [0002] With the development of science and technology and the progress of economy and society, mobile communication has played an increasingly important role in people's daily life. By the end of 2009, the number of mobile communication users in my country has exceeded 700 million, and this number is still increasing at a high speed. Especially since the issuance of 3G licenses in 2009, operators have started a new round of large-scale construction of base stations. [0003] The base station antenna is the most basic and indispensable part of mobile communication. In the past construction, the downlink signal transmitted by the base station was connected to the base station antenna for transmission through the feeder; similarly, the uplink signal received by the mobile phone received by the base...

AI Technical Summary

Problems solved by technology

For the downlink signal transmitted by the base station, the feeder loss means the loss of high power, and the realization of high power will pay a high price of cost and technology; for the uplink signal transmitted by the mobile phone received by the base station antenna, the feeder loss means the noise figure The increase of the noise figure will reduce the receiving sensitivity of the base station and reduce the coverage of the base station

At present, the system with large feeder loss can only be compensated by adding tower-mounted amplifiers under the base station antenna. However, the addition of tower-mounted amplifiers will cause the system installation to be complicated, and the second is to place high-power tower-mounted amplifiers outside to stabilize the system. sex will be greatly reduced

[0004] Even if the feeder loss between the base station and the base station antenna can be solved by adding a tower top amplifier, the inherent loss of the internal feed network of the passive base station antenna cannot be eliminated. This inherent loss is at least above 1dB, which is equivalent to at least 20%. energy loss, which also means more energy loss for large signals

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