Antenna
An antenna and electrode technology, which is applied to antennas, resonant antennas, antenna components, etc., can solve the problems of increased conductive loss, thinning current path line width, and poor antenna efficiency, so as to suppress the increase of conductive loss and radiation Efficiency reduction and the effect of improving the degree of freedom of arrangement
Inactive Publication Date: 2013-04-03
MURATA MFG CO LTD
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, in the antenna of the invention described in Patent Document 1, in the case of miniaturization, since the area where the current path can be formed is narrowed, a sufficient line length cannot be secured, so only the line width of the current path can be reduced.
As a result, current concentration occurs, resulting in increased conduction loss and poor antenna efficiency.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] Hereinafter, embodiments according to the present invention will be described based on the drawings.
[0060] exist Figure 1a In , the antenna of the first embodiment is shown by a schematic perspective view. exist Figure 1b shown in Figure 1a A schematic perspective view of the antenna viewed from the rear side of . exist Figure 1c shown in Figure 1a Schematic exploded view of the antenna. exist Figure 1d shown in Figure 1a The F-F section view. exist Figure 1e shown in Figure 1a G-G cross-sectional view.
[0061] The antenna 1 example figure 2 As shown, it is disposed on one end side of a circuit board 10 of a wireless communication device such as a mobile phone, and is electrically connected to the circuit board 10 . In addition, the circuit board 10 is provided with a ground region Zg where the ground electrode 14 is formed, and a non-ground region Zp where the ground electrode 14 is not formed. exist figure 2 In the illustrated circuit board 10...
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
Login to View More Abstract
The antenna includes a power-feeding radiation electrode and a non-power-feeding radiation electrode are provided adjacent to each other with a gap therebetween on the flexible substrate, which also is bendable. The power-feeding radiation electrode is used to perform antenna operation in a basic mode in which resonant operation is performed at a basic frequency and antenna operation in a high-order mode in which resonant operation is performed at a frequency higher than the basic frequency. The power-feeding radiation electrode includes a loop path configured such that the power-feeding radiation electrode first extends in a direction away from a power-feeding end and an open end is bent toward the power-feeding end. The non-power-feeding radiation electrode has one end serving as a ground-side end and the other end serving as an open end. A dielectric body having permittivity higher than the bendable, flexible substrate is provided on a front surface or a back surface of the power-feeding radiation electrode provided in a region including a portion in which voltage of a resonant frequency in the high-order mode is zero potential and a region in the vicinity of that portion.
Description
technical field [0001] The present invention relates to, for example, an antenna provided in a wireless communication device such as a mobile phone. Background technique [0002] Various configurations have been proposed as antennas applied to wireless communication devices such as mobile phones (for example, refer to Patent Documents 1 and 2). For example, the antenna disclosed in Patent Document 1 has a first resin that is difficult to plate and a second resin that is easy to plate. The antenna was formed by two-stage injection molding so that at least a part of the second resin was exposed. A conductive metal layer is plated on the second resin, and the plated portion is configured as an element. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-78332 [0004] Patent Document 2: Japanese Patent Application Publication No. 6-34309 [0005] However, in recent years, there has been a demand for miniaturization of wireless communication devices such as portab...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/24H01Q9/42H01Q5/10
CPCH01Q9/42H01Q1/243H01Q1/38
Inventor 清水见江久保田和彦
Owner MURATA MFG CO LTD