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KR-20260063889-A - HIGH FREQUENCY BAND RADIATING ELEMENT WITH REDUCED INTERFERENCE AND MULTI BAND ANTENNA INCLUDING THE SAME

KR20260063889AKR 20260063889 AKR20260063889 AKR 20260063889AKR-20260063889-A

Abstract

A high-band radiation element having reduced interference and a multi-band antenna including the same are provided. The high-band radiation element includes: a balun installed vertically on a reflector; a radiation substrate supported by the balun; a dipole element fed by the balun and including a first dipole element and a second dipole element intersecting each other on one surface of the radiation substrate; and a closed-loop parasitic element formed on the radiation substrate, forming a closed loop with respect to the first dipole element and the second dipole element and surrounding them.

Inventors

  • 김상진
  • 김정보
  • 전동하
  • 나상근

Assignees

  • 주식회사 오늘이엔엠

Dates

Publication Date
20260507
Application Date
20241031

Claims (14)

  1. A balloon installed vertically on a reflector; A radiation substrate supported by the above balun; A dipole element comprising a first dipole element and a second dipole element that are fed by the above balun and intersect each other on the radiating substrate; and A closed-loop parasitic element formed on the above-mentioned radiating substrate, comprising a closed-loop parasitic element that surrounds and forms a closed loop with respect to the first dipole element and the second dipole element. High-bandwidth radiation device.
  2. In Article 1, The first dipole element radiates polarization in the +45° direction, and the second dipole element radiates polarization in the -45° direction. High-bandwidth radiation device.
  3. In Article 1, Compared to the length of the current path formed by the power supply of the first dipole element, The length of the current path formed by the coupling of the above closed-loop parasitic element with the first dipole element is long, High-bandwidth radiation device.
  4. In Article 1, The above closed-loop parasitic element is spaced apart by a slot on the plane of the dipole element and the radiating substrate, High-bandwidth radiation device.
  5. In Paragraph 4, The above slot has a constant width over the perimeter of the above closed-loop parasitic element, High-bandwidth radiation device.
  6. In Paragraph 4, The width of the above slot is 0.001 to 0.04 λc, and The above λc is the wavelength of the center frequency of the frequency band of the broadband highband radiating element, High-bandwidth radiation device.
  7. In Article 1, The width of the above closed-loop parasitic element is 0.004 to 0.07 λc, and The above λc is the wavelength of the center frequency of the frequency band of the broadband highband radiating element, High-bandwidth radiation device.
  8. In Article 1, The above broadband high-bandwidth radiating element has a bandwidth of 1400 MHz to 2700 MHz, High-bandwidth radiation device.
  9. A low-band radiation element array comprising a plurality of low-band radiation elements arranged in a row on a reflector; and A multi-band antenna comprising a high-band radiation element array including a plurality of high-band radiation elements formed around each of the plurality of low-band radiation elements on the reflector, Each of the above high-band radiation elements is, A balloon installed vertically on a reflector; A radiation substrate supported by the above balun; A dipole element comprising a first dipole element and a second dipole element that are fed by the above balun and intersect each other on the radiating substrate; and A closed-loop parasitic element formed on the above-mentioned radiating substrate, comprising a closed-loop parasitic element that surrounds and forms a closed loop with respect to the first dipole element and the second dipole element. A multi-band antenna comprising a high-band radiating element having reduced interference.
  10. In Article 9, The above closed-loop parasitic element is spaced apart by a slot on the plane of the dipole element and the radiating substrate, A multi-band antenna comprising a high-band radiating element having reduced interference.
  11. In Article 10, The above slot has a constant width over the perimeter of the above closed-loop parasitic element, A multi-band antenna comprising a high-band radiating element having reduced interference.
  12. In Article 10, The width of the above slot is 0.001 to 0.04 λc, and The above λc is the wavelength of the center frequency of the frequency band of the broadband highband radiating element, A multi-band antenna comprising a high-band radiating element having reduced interference.
  13. In Article 9, The width of the above closed-loop parasitic element is 0.004 to 0.07 λc, and The above λc is the wavelength of the center frequency of the frequency band of the broadband highband radiating element, A multi-band antenna comprising a high-band radiating element having reduced interference.
  14. In Article 9, Each of the above high-band radiation elements is, The sum of the lengths formed by the balun and the dipole element is less than or equal to 1/4 of the wavelength of the center frequency of the low-band radiation element. A multi-band antenna comprising a high-band radiating element having reduced interference.

Description

High frequency band radiating element with reduced interference and multi-band antenna including the same The present invention relates to a high-band radiation element having reduced interference and a multi-band antenna including the same, and more specifically, to a high-band radiation element operating in an extended frequency bandwidth of 1400 MHz to 2700 MHz including a radiation element having an optimized length and a closed-loop parasitic element, and to a multi-band antenna including the high-band radiation element capable of reducing resonance generated in a high-frequency radiation element by a low-band radiation element. The dipole antenna of Patent Document 1 discloses a dual-polarized planar dipole antenna comprising a feed balun on a reflector and a square-shaped dipole installed on the feed balun. The most important performance metric of various dipole antennas, including this antenna structure, includes a wideband operating frequency. The conventional dipole antenna of Patent Document 1 is described as utilizing a band of approximately 1750 to 2600 MHz. Meanwhile, a multi-band antenna operating by arranging the dipole antenna of Patent Document 1 as a high-frequency radiating element and arranging a low-frequency radiating element together may experience interference due to coupling between the radiating elements. Such interference may cause distortion in the radiation pattern of the low-frequency band, thereby degrading broadband characteristics. FIG. 1 is a drawing for explaining a high-band radiation element having reduced interference according to an embodiment of the present invention and a multi-band antenna including the same. FIGS. 2 and 3a are drawings for explaining a high-bandwidth radiation element according to an embodiment of the present invention. FIGS. 3b and 3c are drawings for illustrating a high-bandwidth radiating element according to another embodiment of the present invention. FIGS. 4a to 4d are drawings for explaining the effects of a high-bandwidth radiation element according to an embodiment of the present invention. FIGS. 5a, 5b and 6 are drawings for explaining the effects of a high-bandwidth radiating element according to an embodiment of the present invention. FIG. 7 is a diagram illustrating a low-band radiating element included in a multi-band antenna according to an embodiment of the present invention. FIGS. 8a and 8b are drawings for explaining the effect of a high-band radiation element included in a multi-band antenna according to an embodiment of the present invention. FIG. 9 is a diagram illustrating the effect of a multi-band antenna according to an embodiment of the present invention. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components. When one component is referred to as being "connected to" or "coupled to" another component, it includes cases where it is directly connected or coupled to the other component, or cases where another component is interposed. Conversely, when one component is referred to as being "directly connected to" or "directly coupled to" another component, it indicates that no other component is interposed. "And/or" includes each of the mentioned items and all combinations of one or more of them. The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and/or "comprising" do not exclude the presence or addition of one or more other components, steps, actions, and/or elements to the mentioned components, steps, actions, and/or elements. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the "first component" mentioned below may be the "second component" within the technical scope of the present invention. Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or