Antenna and calibration device thereof
An antenna calibration, antenna technology, applied in the direction of antenna, antenna array, transmission monitoring, etc., can solve the problems of occupation, unfavorable antenna miniaturization, multi-antenna internal space, etc.
Active Publication Date: 2014-06-11
COMBA TELECOM TECH (GUANGZHOU) CO LTD +1
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Problems solved by technology
Multiple calibration devices occupy more internal space of the antenna, which is not conducive to the miniaturization of the antenna
Method used
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[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] see Figure 4 , Figure 4 is a functional block diagram of the antenna calibration device of the present invention, such as Figure 4 As shown, including power distribution network, directional coupler unit and combiner.
[0029] In this embodiment, one power distribution network, eight directional coupler units and one combiner are included. Among them, the power distribution network is formed by cascading 7 power dividers. To simplify notation, Figure 4 Only one power splitter and one directional coupler unit are marked.
[0030] In this embodiment, the power distribution network, the coupler unit and the combiner are all arranged on the surface of the same dielectric board.
[0031] In other embodiments, the power distribution network and the coupler unit are disposed on the surface of one dielectric board, and the combiner is dispose...
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The invention discloses a calibration device of an antenna. The calibration device of the antenna comprises a dielectric slab, a power distribution network, a plurality of coupler units and a combiner. Each coupler unit comprises a first coupling branch, a second coupling branch and a main coupling branch, wherein the first coupling branch, the second coupling branch and the main coupling branch are respectively composed of two directional couplers; the power distribution network comprises a combination port and a plurality of branch ports connected with the main coupling branches of the coupler units; the combiner is connected with the combination port of the power distribution network; coupling ports at one ends of the first coupling branches and coupling ports at one ends of the second coupling branches are used for being connected with a multi-band antenna with different frequency bands; coupling ports at the other ends of the first coupling branches and coupling ports at the other ends of the second coupling branches are used for being connected with base station equipment at different frequency bands respectively; ports of the combiner are used for being connected with base station calibration equipment at different frequency bands respectively. The invention further discloses the antenna provided with the calibration device inside. In this way, the multi-band antenna can be calibrated through the single calibration device, the inner space of the antenna is saved, and miniaturization of the antenna is achieved.
Description
technical field [0001] The invention relates to the field of antenna calibration, in particular to an antenna and a calibration device thereof. Background technique [0002] The smart antenna is a multi-channel antenna, which uses the interference of electromagnetic waves when each channel works together to generate various coverage beams required by the system. In order to ensure the performance of the beam, it is necessary to use a calibration device to detect the inherent and time-varying errors of each channel. And corresponding compensation is carried out in the signal processing algorithm. Therefore, the calibration device is one of the core components of the smart antenna and plays a decisive role in ensuring the system performance. [0003] The current smart antenna calibration device is generally composed of a directional coupler and a power divider, which can only be used for calibration of a single frequency band, but the calibration device can be used in a broadb...
Claims
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IPC IPC(8): H04B17/00H01Q21/00
Inventor 赖展军李明超
Owner COMBA TELECOM TECH (GUANGZHOU) CO LTD