Radio frequency signal switching device and direction-finding antenna system

By designing a radio frequency signal switching device integrating bandpass filter and filter switch in the direction finding antenna system, the existing cavity filter has been solved, and flexible selection and channel switching of radio frequency signals are realized, and the flexibility and reusability of the system are improved.

CN119727770APending Publication Date: 2025-03-28ZHIZHU COMMUNICATION TECHNOLOGY (CHENGDU) CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202411724603.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The cavity filters used in existing direction finding antenna systems have problems such as large size, complex production process, long production cycle, large weight and poor reusability, and it is difficult to cope with complex signal environments, especially in environments where more than ten frequency band signals are required to switch signals.

Method used

A radio frequency signal switching device is designed, including an antenna switch, a filter module and a control module. A small volume bandpass filter and a filter switch are used to flexibly select the signal in the target frequency band for filtering processing through the control module.

Benefits of technology

It realizes flexible selection of radio frequency signals and flexible switching of channels, reduces the volume and weight of the device, improves reusability, and can effectively deal with complex signal environments.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to a radio frequency signal switching device and a direction-finding antenna system. The radio frequency signal switching device comprises an antenna switch, a filtering module and a control module, the antenna switch is used for externally connecting an antenna and switching channels of the antenna; the filtering module is connected with the antenna switch, the filtering module is used for filtering radio-frequency signals received by the antenna, the filtering module comprises at least two band-pass filters, filtering switches are arranged at the two ends of each band-pass filter, and the filtering switches are used for controlling one of the at least two band-pass filters to receive the radio-frequency signals for filtering; the control module is connected with the antenna switch and the filtering switch, and the control module is used for controlling the working state of the antenna switch and the working state of the filtering switch, so that the radio frequency signal of the target frequency band is received and filtered. The radio frequency signal switching device provided by the invention has the advantages of modular design, small size, light weight and high reusability, can flexibly select channels for receiving signals by the antenna, and can adapt to a multi-band complex signal environment.
Need to check novelty before this filing date? Find Prior Art