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Radio frequency system

A radio frequency system and radio frequency unit technology, applied in the field of radio frequency systems, can solve the problems of inconvenient expansion, reduced system reliability, and complicated maintenance.

Inactive Publication Date: 2011-10-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

First, an external combiner device is added, and the device needs to meet the functions of waterproof and other outdoor applications, which increases the cost of the device and reduces the reliability of the system; second, when expanding the frequency band, it is necessary to disassemble the antenna and RRU device at the same time, causing expansion The inconvenience and complexity of maintenance

Method used

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Examples

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specific Embodiment 1

[0069] This embodiment is a system solution for a radio frequency system (taking two antennas as an example) supporting multiple frequency bands and multiple standards. The block diagram is as follows Figure 8a and Figure 8b Shown:

[0070] Figure 8a It shows the situation of the radio frequency system supporting multi-standard and multi-band that is directly connected to different standard BBUs; Figure 8b The radio frequency system that supports both TDD and FDD with two single fibers is shown, and the corresponding BBU also needs to support TDD and FDD at the same time.

[0071] see Figure 8a and Figure 8b As shown, it is divided into broadband antenna, main control unit, radio frequency unit, filter unit, and power supply module.

[0072] 1) Broadband antenna

[0073] Covering a wide frequency band of 1.8-2.6G, it can cover the existing TD-SCDMA, TD-LTE, and FDD frequency bands. According to system requirements, two-antenna, four-antenna, and eight-antenna array...

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Abstract

The invention discloses a radio frequency system. According to the invention, a radio frequency remote operation can be carried out without adding external combined equipment. The radio frequency system comprises a filtering unit, a main control unit, and at least two radio frequency units. Each radio frequency unit is respectively connected with the main control unit and the filtering unit. The filtering unit is used for combining and filtering received signals of all radio frequency units and emitting filtered signals together by an antenna; besides, the filtering unit is also used for shunting and filtering received signals by the antenna and sending each received signal to a corresponding radio frequency unit. Each radio frequency unit is used for carrying out an amplifying and filtering process and a down conversion process on received signals from the filtering unit and sending the processed signals to the main control unit; besides, the each radio frequency unit is also used for carrying out modulation, up conversion, and amplification on signals from the main control unit and sending the processed signals to the filtering unit. The main control unit is used for allowing the signal transformation between a BBU and a radio frequency unit.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a radio frequency system. Background technique [0002] When the existing wireless communication system supports multiple standards and multiple frequency bands, it adopts an external combination installation method to fulfill the wireless network requirements. In order to support the application of more standards and frequency bands and reduce the cost of installation and removal, the antenna adopts a broadband design that can cover multiple frequency bands at the same time, such as figure 1 As shown, a single-antenna remote radio unit (RRU) is taken as an example. When RRUs of different standards are connected to antennas, a combination method is adopted. [0003] The existing third-generation mobile communication base station system adopts the optical fiber remote RRU solution, and the earlier radio frequency remote solution has been greatly improved. It is a relatively...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04W88/08
CPCY02B60/50Y02D30/70
Inventor 倪慧娟段滔
Owner DATANG MOBILE COMM EQUIP CO LTD
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