Ultra-wideband inverted-F antenna

By adopting a three-dimensional gradient feed structure and all-metal structure design in the inverted F antenna, combined with the F-shaped hollow groove and circular through-hole, the structural limitation problem of traditional inverted F antennas when achieving dual-band or ultra-wideband frequency coverage is solved, the demand for multi-band operation is achieved, and stable performance is maintained in metal environments.

CN119921097AActive Publication Date: 2025-05-02THE 77115TH UNIT OF THE PEOPLES LIBERATION ARMY OF CHINA
View PDF 6 Cites 0 Cited by

Patent Information

Application Number
CN202411977643.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-05-02
Estimated Expiration
2044-12-31

Smart Images

  • Figure CN119921097A_ABST
    Figure CN119921097A_ABST
Patent Text Reader

Abstract

The invention provides an ultra-wideband inverted-F antenna, which relates to the technical field of antennas and comprises an outer frame structure, a feed structure, a connecting block and a coaxial feeder line, an F-shaped hollow open groove is formed in the upper surface of the outer frame structure, and a circular through hole is formed in the lower surface of the outer frame structure; the top of the feed structure is fixedly connected with the upper top surface of the inner side of the outer frame structure, the feed structure is a three-dimensional gradual change structure, and a gap is formed between the bottom of the feed structure and the lower bottom surface of the outer frame structure; the side wall of the connecting block is fixedly connected with the side wall of the feed structure; a core wire of the coaxial feeder line penetrates through the circular through hole and is electrically connected with the connecting block, and a ground wire of the coaxial feeder line is electrically connected with the bottom of the outer frame structure. According to the invention, dual-band coverage of 0.84 GHz-1 GHz and 1.7 GHz-85 GHz is realized, the electromagnetic performance is optimized, and the feed efficiency and the standing-wave ratio characteristic are improved.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Single feeder built-in multi-frequency band antenna for mobile communication terminal

    CN101043101A

  • Plane inverse-F shaped antenna with extension grounding surface

    CN101431179A

  • Ultra-wide band printed dipole antenna with combined semicircular sheet oscillators capable of realizing balanced microstrip line feeding

    CN102694252A

  • Antenna and terminal equipment

    CN112186354A

  • Inverted F antenna structure

    CN205609752U