Unlock instant, AI-driven research and patent intelligence for your innovation.

Double by-pass circuit wide-band antenna

A broadband antenna and dual-branch technology, applied in the field of dual-branch broadband antennas, can solve the problems of complex antenna structure, unsuitable application, and large antenna size.

Inactive Publication Date: 2008-11-19
LITE ON TECH CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Taiwan Patent Announcement No. M269,583 "Digital TV Receiving Antenna", which discloses a digital TV receiving antenna, but the structure of the antenna is complicated, so the antenna manufacturing cost is high and the impedance bandwidth is small
And the disclosed a kind of digital TV receiving antenna of Taiwan Patent Publication No. D105,579 " digital TV receiving antenna ", it has the shortcoming that antenna size is too large, makes this antenna in actual operation, though can receive digital TV signal, but not Suitable for general portable mobile products

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
  • Double by-pass circuit wide-band antenna
  • Double by-pass circuit wide-band antenna
  • Double by-pass circuit wide-band antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Please refer to figure 1 , figure 1 It is a schematic diagram of the first embodiment of the dual-branch broadband antenna of the present invention. The dual-branch broadband antenna includes a ground plane 12 and a radiation portion 13 . The radiating part 13 is substantially a planar structure, including a first radiating metal arm 14 and a second radiating metal arm 15 . The first radiating metal arm 14 has a starting end 141 and an end 142. The starting end 141 is located near the edge 121 of the ground plane 12 and is the feeding point of the antenna. The centerline 16 extends in the direction. The second radiating metal arm 15 has a starting end 151 and an end 152, the starting end 151 is electrically connected to the vicinity of the starting end 141 of the first radiating metal arm 14, and the end 152 is bent toward the first radiating metal arm by at least one bending. The end 142 of the first radiating metal arm 14 extends in a direction and has a certain d...

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 multiband antenna makes use of a short first radiation metal arm to produce a high-frequency(about700MHz) mode through resonance vibration, and a long second radiation metal arm to produce a low-frequency(about 500MHz)through resonance vibration, and makes the second radiation metal arm extend towards the end of the first radiation metal arm through bending, with a specific distance to the end of the first radiation metal arm. The matching of the low-frequency resonance vibration modes can be effectively improved by regulating the distance, so that the low-frequency resonance vibration modes can be compounded to produce an operation frequency which entirely covers all digital TV channels(470-862MHz).

Description

technical field [0001] The invention relates to a broadband antenna, in particular to a dual-branch broadband antenna suitable for portable multimedia players. Background technique [0002] In the era of rapid information dissemination, television has become an indispensable role for ordinary people to receive news, entertainment, leisure and information. With the development of wireless communication, in the past, TV programs transmitted signals in an analog way, and then presented their images through analog TVs. The signal transmission process was not only susceptible to noise interference, but the clarity and stability of the presented pictures were also greatly reduced. . [0003] In contrast, the signal transmitted by digital means not only presents better picture quality, but also has a more stable signal, and can provide further multimedia services. Therefore, replacing the traditional analog TV system with a digital TV system has become a It is an inevitable trend...

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): H01Q1/38H01Q9/04H01Q13/08H01Q1/22
Inventor 翁金辂杨育展李伟宇苏绍文周瑞宏
Owner LITE ON TECH CORP