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Spiral antenna for distributed wireless communications systems

A technology of wireless communication and antenna, applied in the antenna field of distributed wireless communication system

Inactive Publication Date: 2015-07-22
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These challenges include access to buildings, limited distribution space in shafts, and space for cable laying and management

Method used

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  • Spiral antenna for distributed wireless communications systems
  • Spiral antenna for distributed wireless communications systems
  • Spiral antenna for distributed wireless communications systems

Examples

Experimental program
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Embodiment Construction

[0036] In the following Detailed Description, reference is made to the accompanying drawings, which form a part hereof, and which are shown by way of illustration of specific embodiments in which the invention may be practiced. In this regard, directional terms such as "top," "bottom," "front," "rear," "head," "forward," and "tail" shall be used in conjunction with one or more of the described used in the orientation shown in the figure. Because elements of embodiments of the present invention may be arranged in a number of different orientations, the use of directional terms is for purposes of illustration and not limitation. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. Accordingly, the following detailed description should not be taken in a limiting sense, and the scope of the invention is defined by the appended claims.

[0037] The invention relates t...

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Abstract

An antenna for wireless communication comprises a dielectric substrate having a first side and an opposite second side. A first major arm having a first modified log-spiral spiral pattern is disposed on the first side of the dielectric substrate. A second major arm having a second modified log-spiral pattern is disposed on the second side of the dielectric substrate, wherein the first and second major arms are formed from a conductive material. A connector coupling is disposed at a center of the modified log-spiral patterns, the connector coupling having a first portion coupled to the first major arm and a second portion coupled to the second major arm. The antenna is self-complementary. The antenna can achieve a return loss better than 10 dB over a broadband range.

Description

technical field [0001] The invention relates to an antenna for a distributed wireless communication system. More specifically, the antenna is configured as a modified logarithmic helical antenna and can be used in a network providing in-building wireless (IBW) communications. Background technique [0002] There are hundreds of millions of multi-dwelling units (MDUs) worldwide, housing approximately one-third of the world's population. In order to provide the required bandwidth to an increasing number of customers, better wireless communication coverage is required. Accordingly, there is a need to expand the number of "micro" cell sites (sites within structures such as office buildings, schools, hospitals, and residential units) in addition to new deployments of traditional, large "macro" cell sites. In-building wireless (IBW) distributed antenna systems (DAS) are used to improve wireless coverage within buildings and related structures. A conventional DAS uses strategical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/24
CPCH01Q1/36H01Q1/27H01Q1/38H01Q1/007H01Q9/27H01Q19/10
Inventor 康斯坦德·E·耶梅隆
Owner 3M INNOVATIVE PROPERTIES CO