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Small-size dual-frequency single-fed omnidirectional antenna

An omnidirectional antenna, small size technology, applied in the direction of the connection of the antenna grounding switch structure, the structure of the radiating element, etc., can solve the problems of MIMO design difficulties, and achieve the effect of compact feeding method, small overall size, and good omnidirectional coverage.

Inactive Publication Date: 2018-11-06
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially on portable devices, limited space makes multi-antenna MIMO design encounter many difficulties

Method used

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  • Small-size dual-frequency single-fed omnidirectional antenna
  • Small-size dual-frequency single-fed omnidirectional antenna
  • Small-size dual-frequency single-fed omnidirectional antenna

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Embodiment Construction

[0018] The specific content of the present invention will be described in detail with reference to the accompanying drawings. Such as Figure 1-2 As shown, a small-size dual-frequency single-fed omnidirectional antenna, two 5G wide metal radiating arms 1 and two 2.4G narrow metal radiating arms 2 are printed on the insulating dielectric board 3 in reverse symmetry through circuit board printing technology. The front side of the 2.4G narrow metal radiating arm 2 is connected in series with a right-angle bent curved branch 7 in series to achieve good frequency band characteristics in a small size. The 2.4G narrow metal radiating arm 2 and 5G wide metal radiation on the same side Arm 1 is combined together to form a radiating arm of a dual-frequency single-fed omnidirectional antenna. The length l of the antenna radiating arm follows the following relationship: λ l Is the free space wavelength corresponding to the center frequency of the 2.4G and 5G wifi bands, ε eff For the effe...

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Abstract

The invention discloses a small-size dual-frequency single-fed omnidirectional antenna; a 2.4G narrow metal radiation arm and a 5G wide metal radiation arm on the same side are combined together to jointly form a radiation arm of the dual-frequency single-fed omnidirectional antenna, wherein the middle of the 2.4G narrow metal radiation arm is connected with a right-angle bending type curved branch in series, and a gap is pre-arranged between the two antenna radiation arms; the two antenna radiation arms adjacent to the gap are provided with feed bonding pads which are used as respective inputports and are connected with an inner conductor and an outer conductor of a coaxial cable respectively; a long and narrow short-circuit branch forms a 180-degree phase inverter, wherein the phase inverter is placed at the feed position of the antenna radiation arms; and the two ends of the phase inverter are connected with the two antenna radiation arms respectively, and are used for realizing relatively high balanced feeding of the two antenna radiation arms. The antenna is small in overall size and compact in feeding mode, so that the requirement for impedance matching in the bandwidth of the antenna and the high-integration-level application of multiple antennas can be met; and the antenna can be flexibly hidden inside a product, so that the attractive ID design and high omnidirectional coverage are realized.

Description

Technical field [0001] The invention belongs to the technical field of wireless communication and smart network antennas, and specifically relates to a small-size dual-frequency single-feed omnidirectional antenna. Background technique [0002] With the rapid development of the 5G era, the Internet of Things, and home smart cloud platform technologies, mobile communications and wireless network access devices continue to evolve toward miniaturization, multi-band, broadband, and intelligence, and the antenna volume, working frequency band and the whole machine are integrated Degree requirements are getting higher and higher. Compared with the traditional antennas in the past, the antenna design will face more demanding requirements in the future: multi-band, high performance, intelligence, small size, light weight, low profile, easy integration and conformal, low cost, etc. In order to solve the above problems, the present invention designs a high-performance miniaturized antenna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/50
Inventor 李雪萍徐世周詹华伟董晓王永永
Owner HENAN NORMAL UNIV
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