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Dual-frequency microstrip antenna of wireless capsule endoscope

A capsule endoscope and microstrip antenna technology, which is applied to antennas, antenna supports/installation devices, and devices that enable the antennas to work in different frequency bands at the same time, can solve the problem of occupying capsule space, short battery maintenance time, and high communication frequency. problem, to achieve the effect of reducing space, reducing capsule size, and increasing frequency bandwidth

Inactive Publication Date: 2014-07-02
XIAN JIAOTONG LIVERPOOL UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0012] The purpose of the present invention is to provide a dual-frequency microstrip antenna applied to wireless capsule endoscopes, which solves the problems of the microstrip antennas used in wireless capsule endoscopes in the prior art occupying space in the capsule, high communication frequency, and battery maintenance time. Short and other technical issues

Method used

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  • Dual-frequency microstrip antenna of wireless capsule endoscope
  • Dual-frequency microstrip antenna of wireless capsule endoscope
  • Dual-frequency microstrip antenna of wireless capsule endoscope

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Embodiment 1～2

[0043] Embodiments 1-2 are applied to the dual-frequency microstrip antenna of the wireless capsule endoscope

[0044] Such as figure 1 As shown in (a), the dual-frequency microstrip antenna applied to the wireless capsule endoscope is an antenna attached to the outer wall of the capsule of the wireless capsule endoscope, and can be applied to a general wireless capsule endoscope. Designed on a substrate with a length of 33mm and a width of 23mm, the dielectric constant of the substrate is 3.7, the thickness of the copper foil is 0.035mm, and the figure 1 The antenna shown in (a) is placed in a phantom body with a dielectric constant of 56 and a conductivity of 0.8 S / m. In order to reduce the space occupied in the capsule shell, the invented antenna is pasted on the outer wall of the capsule shell to obtain the antenna in the final use state (such as figure 2 (a) shown). The inventive antenna requires a capsule shell radius of 5.3 mm, respectively.

[0045] In order to fu...

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Abstract

The invention discloses a dual-frequency microstrip antenna applied to a wireless capsule endoscope. The dual-frequency microstrip antenna is attached to the capsule outer wall of the wireless capsule endoscope. The dual-frequency microstrip antenna of the wireless capsule endoscope is characterized in that a feeder line end, an outer hollow-square-shaped antenna part and an inner hollow-square-shaped antenna part are included, and the two antenna parts are electrically connected with the feeder line end. The length of the outer hollow-square-shaped antenna part corresponds to the full wave length of the center frequency of a first expectation frequency band, and the length of the inner hollow-square-shaped antenna part corresponds to the full wave length of the center frequency of a second expectation frequency band. The inner hollow-square-shaped antenna part is embedded in the outer hollow-square-shaped antenna part, and the center frequency of the first expectation frequency band and the center frequency of the second expectation frequency band are both smaller than and equal to 1 GHz. A third antenna part is embedded in the inner hollow-square-shaped antenna part, and the third antenna part is provided with a plurality of sets of hollow-square-shaped attaching pieces which are electrically connected with the inner hollow-square-shaped antenna part and is used for improving the matching impedance of the feeder line end. The dual-frequency microstrip antenna is a capsule outer wall attaching antenna, the working frequency is lower than 1 GHz, the advantages of ultra bandwidths and small sizes are achieved, and the dual-frequency microstrip antenna is suitable for working in the small intestine of a human body.

Description

technical field [0001] The invention belongs to the technical field of in vivo detection and detection, and in particular relates to a dual-frequency microstrip antenna applied to a wireless capsule endoscope. Background technique [0002] The history of humans using endoscopes to detect internal organs can be traced back to the 19th century. In 1806, German scientist Philipp Bozzini first invented the prototype of an endoscope that used candlelight to detect human bladder and intestines. Since then, different types of endoscopes (such as gastroscopes, used to detect gastric lesions; colonoscopes, used to detect intestinal lesions) have been continuously developed and improved to help doctors detect diseases of the digestive system in vivo . [0003] In the past two decades, related science and technology have developed rapidly. A medical auxiliary device that can be used to replace gastroscopy and colonoscopy—the wireless capsule endoscope was born, which enables simultane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/22H01Q5/01H01Q5/10
Inventor 林永义王炤杨民助王璟琛
Owner XIAN JIAOTONG LIVERPOOL UNIV
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