Three frequency range double antenna with high isolation

A high-isolation, dual-antenna technology, applied in antennas, antenna coupling, antenna arrays, etc., can solve problems such as lack of clear design ideas, weak logic, and lack of design ideas

Inactive Publication Date: 2012-07-18
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] Through the search of the existing technology, it is found that the existing multi-antenna design often lacks clear design ideas and the frequency band involved in improving the isolation is often a single frequency band, such as the article in ELECTRONICS LETTERS Vol.46, No.6: with high Compact MIMO antenna with hig

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  • Three frequency range double antenna with high isolation
  • Three frequency range double antenna with high isolation
  • Three frequency range double antenna with high isolation

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[0027] The following is a detailed description of the embodiments of the present invention: this embodiment is implemented on the premise of the technical solution of the present invention, and gives detailed implementation and specific operation procedures, but the protection scope of the present invention is not limited to the following implementations example.

[0028] This embodiment provides a three-band dual antenna with high isolation, and the isolation of the antenna is better than -20dB in the DCS / PCS / UMTS three frequency bands. The design of dual antenna adopts the principle of network cancellation and the method of ADS and HFSS co-simulation optimization. The optimization model is as attached figure 1 As shown, it includes: a four-port S-parameter matrix, a power divider, and a phase shifter. The four-port S-parameter matrix is ​​connected to the power divider and the phase shifter according to the port correspondence relationship.

[0029] The method of ADS and HFSS co-...

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Abstract

The invention discloses a three frequency range double antenna with high isolation. The isolation in distributed control system (DCS)/process control system (PCS)/universal mobile telecommunications system (UMTS) frequency ranges is superior to -20dm, the design of the double antenna adopts a network compensation theory and an acad develop system (ADS) and high frequency structure simulator (HFSS) collaborative simulation optimized method, and an optimized model comprises three constituent parts of (1) four-antenna S parameter matrix, (2) power divider and (3) phase shifter. A material object of the double antenna is manufactured according to the optimized model for testing and verifying, the isolation in the DCS/ PCS/ UMTS frequency ranges is superior to -20dm, the simulation better coincides with a testing result, and effectiveness of the double antenna provided with the high isolation and designed in the DCS/ PCS/ UMTS frequency ranges is verified.

Description

technical field [0001] The patent of the present invention relates to a user equipment (UE) DCS / PCS / UMTS three-band dual antenna with high isolation. Background technique [0002] In order to utilize existing spectrum resources more effectively and promote the gradual commercial use of LTE, multi-mode multi-link UEs (M3L-UEs) have received increasing attention. For example, 3GPP has defined Type A and Type B terminals as M3L-UE in the new version. Since M3L-UE is an intelligent mobile terminal with multiple wireless links activated simultaneously, it will face a large number of software and hardware technology and product realization problems. Among the many hardware technical problems of M3L-UE, the radio frequency mutual interference problem is one of the most urgent basic and key technical problems to be solved. The reason is that the M3L-UE is a miniaturized device, the multiple antennas of the M3L-UE are very close to each other, and the electromagnetic mutual couplin...

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Application Information

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IPC IPC(8): H01Q1/52H01Q21/00
Inventor 陶睿章文昕彭宏利
Owner SHANGHAI JIAO TONG UNIV
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