Antenna and communication device with that antenna

一种天线、放射元件的技术，应用在天线及具备该天线的通信装置领域，能够解决难以实现薄型宽带特性、天线设置位置限制、通信电路匹配困难等问题

Inactive Publication Date: 2009-10-14
MURATA MFG CO LTD
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that there is a limitation on the installation position of the antenna
[0011] In addition, it is difficult to achieve low-profile and broadband characteristics in a single patch antenna
Therefore, in the monopole antenna as disclosed in the aforementioned Patent Document 1, if the dielectric constant used is large, matching with the communication circuit is difficult.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antenna and communication device with that antenna
  • Antenna and communication device with that antenna
  • Antenna and communication device with that antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0064] figure 1 The circuit board 4 and the antenna of the first embodiment are shown in a schematic perspective view. The antenna 1, for example as figure 2 As shown in the plan view of , it is applicable to a data communication device or the like including a circuit board 4 . A ground plane 5 is formed on the surface of the circuit board 4 . in addition, figure 1 , figure 2 The horizontal direction (the direction in which the ground plane 5 is formed) is shown as x-axis and y-axis orthogonal to each other, and the direction perpendicular to the x-axis and y-axis is shown as z-axis.

[0065] The antenna 1 has a plate-shaped radiating element 2 arranged on a ground plane 5 at a distance from the ground plane 5 . A power supply unit 3 connected to a power supply circuit (not shown) and a pair of short-circuit units 7 and 8 are provided on the peripheral portion...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A planar radiation element (2) is arranged on the ground surface (5) while spaced apart therefrom. The radiation element (2) resonates at predetermined low level wavelength lambda1 and high level wavelength lambda2. On the periphery of the radiation element (2), a feeding portion (3) to be connected with a feeding circuit and a pair of short circuit portions (7, 8) are provided. The feeding portion (3) is provided on one end side of the radiation element (2). The pair of short circuit portions (7, 8) are provided in the regions that are on the opposite sides along the circumferential edge direction of the radiation element (2) from the feeding portion (3) and give portions where the voltages of high level resonance respectively delivered from the feeding portion (3) to the short circuit portions (7, 8) become zero. The short circuit portions (7, 8) are extended to the ground surface (5) side and connected therewith. The radiation element (2) has an open end (6) on the other side, i.e.the side opposite to the feeding portion (3). Electric length of the radiation element (2) from one end side to the other end side (6) thereof is formed to be one half of the high level resonance wavelength lambda2 of the radiation element (2).

Description

technical field [0001] The present invention relates to an antenna mounted on a ground plane inserted into a substrate or the like incorporated in, for example, a personal computer, and used for wireless communication such as information communication. Furthermore, the present invention relates to a communication device including the antenna. Background technique [0002] For example, various antennas such as monopole antennas (for example, see Patent Document 1), patch antennas, and inverted-F antennas have been proposed as antennas for wireless communication. [0003] Figure 12 The antenna shown in is an inverted-F antenna (see Patent Document 2.). This inverted-F antenna is formed by arranging triangular plate-shaped antenna elements 42 at intervals on an earth plate 41 . In the center of each side of the antenna element 42, a short plate (short plate) 43 is respectively provided. The feeding point 44 is arranged at the center of gravity of the antenna element 42 , an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/08H01Q7/00H01Q5/01H01Q9/30H01Q5/00H01Q5/10H01Q5/357
CPCH01Q1/243H01Q5/0051H01Q1/38H01Q9/0421H01Q5/357
Inventor 植木纪行
Owner MURATA MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap