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Capsule antenna

A capsule and antenna technology, used in antennas, antenna coupling, loop antennas, etc., can solve the problems of narrow antenna bandwidth and influence on antenna performance, and achieve the effect of improving antenna gain, good impedance matching, and maintaining stable communication.

Active Publication Date: 2018-04-17
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problems of narrow antenna bandwidth, battery and electronic components affecting antenna performance and non-omnidirectional radiation in the prior art, the present invention proposes a capsule antenna with stable performance, through the integration of structural radiation units Design, put the battery and electronic components in the actual application inside the metal cover and metal column, thus shielding their negative impact on the antenna performance

Method used

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Examples

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Embodiment 2

[0047] Such as Figure 5As shown, the length L=26mm of the capsule antenna, the inner diameter Ri=5.44mm of the cylindrical part of the shell and the upper and lower hemispherical parts, the outer diameter Ro=5.5mm, the thickness of the shell t=0.06mm, and the entire external dimension is 26mm (length) × 11mm ( diameter) is the size of a normal capsule. The length Lg of the inner metal column 3 is 16 mm, and the radius Rg is 4.5 mm. The metal cover 5 has a radius Rh=4.5mm. The distance between the metal post 3 and the second and third metal strips 7 and 7 on both sides and the distance between the metal cover 5 and the first metal strip 6 on the top of the shell are both s=0.94mm. The width of the first metal strip wt=2mm, and the width of the second metal strip 7 and the third metal strip 7=0.6mm.

[0048] Such as Figure 6 As shown, when the capsule antenna is placed in human tissue, such as a muscle tissue with a size of 60mm×60mm×60mm, it can cover an ultra-wide operat...

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Abstract

The invention discloses a capsule antenna. The capsule antenna comprises an upper dielectric plate, a lower dielectric plate, a metal pole, a metal cover, a polyimide shell, a metal stripe and a feedmetal probe, wherein the metal pole is embedded into the center of the upper dielectric plate and the center of the lower dielectric plate, the metal cover is arranged on the top surface of the upperdielectric plate, and the bottom surface of the lower dielectric plate is covered with an annular metal layer; the polyimide shell has biocompatibility, and the exterior is in direct contact with human tissues; the metal stripe clings to the inner wall of the shell and forms an external metal ring with the annular metal layer on the bottom surface of the lower dielectric plate, and a slot antennastructure is formed among the metal ring, the metal pole and the metal cover. The metal pole serves as a carrier of a battery, and the influence of the battery on antenna performance can be shielded.Electronic parts and components of a wireless endoscope system are arranged inside the metal cover, and the influence on the radiation performance of the antenna is avoided as well. A feed port is formed in the top of the metal cover, one end is connected with the metal stripe, and the other end is connected with the metal stripe inside the polyimide shell, so that a half wave length resonant slotantenna is simulated.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a capsule antenna, which is suitable for a wireless endoscope system and can be used in the technical field of medical monitoring. Background technique [0002] The traditional endoscope system is a wired device, which is connected by a flexible cable and inserted into the human body through the oral cavity, which brings great inconvenience to medical monitoring, imaging and diagnosis. In recent years, some scientific researchers have proposed various capsule antennas suitable for wireless endoscopy systems. [0003] In 2009, Phillip M.Izdebski, Harish Rajagopalan and Yahya Rahmat-Samii published "Conformal IngestibleCapsule Antenna: ANovel Chandelier Meandered Design" in IEEE Transactions on Antennas and Propagation, proposing a meandering dipole antenna suitable for capsules. This antenna The matching is mainly improved by using the feeding method off the center o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/27H01Q1/36H01Q1/38H01Q1/42H01Q1/50H01Q1/52H01Q7/00
CPCH01Q1/273H01Q1/36H01Q1/38H01Q1/42H01Q1/50H01Q1/526H01Q7/00Y02E60/10
Inventor 段铸
Owner NANJING UNIV OF INFORMATION SCI & TECH
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