UWB Pentagonal Shaped Fractal Patch Antenna for Wireless Capsule Endoscopy

Abstract

The capsule endoscopy device is one of the most important devices that have been invented recently because of its importance in facilitating the process of imaging the digestive system. The process of developing and improving the transmitter in the capsule is one of the most important things to improve images and accelerate the process of imaging. Microstrip antenna will be used because it has several benefits such as small size, ease of manufacture and low cost. In this paper, the microstrip antenna was designed with ultra-wideband technology (UWB) by using fractal geometry. The proposed antenna has a return loss of -25.1 at 5.45 GHz and VSWR of 1.13. Also, the radiation patterns are Omni-directional radiations over the UWB bandwidth.

Ultra-Wideband Antennas for Wireless Capsule Endoscope System: A Review

“…Currently, fractal geometry is being applied to improve antenna bandwidth. In [47], a kind of UWB fractal patch antenna with an overall size of 10 mm × 10 mm was designed on a FR-4 substrate with a relative permittivity of 4.3. The star-slot was embedded into the patch of the pentagon, and the process was iterated four times to obtain different resonant frequencies, which operated a wider range of 4.7 to 9.18 GHz.…”

A review of implantable and ingestible antenna for wireless capsule endoscopy system

“…One of the important criteria in developing such medical devices which already gaining substantial attention from the researchers is the design of a compact in-body antenna that can work in a complex lossy environment like the human body and at the same time can deal with the human safety. Several ongoing researches on the in-body antenna are proposed in (10,11,14,15,(31)(32)(33)52,53,(58)(59)(60)(61) where the types of antennas that being used are dipole, monopole, helical, conformal, patch, and loop antennas which can be found in Table 3. In the event of implantable antennas, the position and orientation are predetermined, patch designs are most commonly chosen because they are highly flexible in design due to the ability to exhibit directive radiation patterns and have a lot of choices of miniaturization techniques and shapes.…”

“…Furthermore, patch antenna also being a target in ingestible antenna for most researchers due to its flexibility. Recently, an ultra-wideband patch antenna using microstrip in WCE was presented due to its benefits in small, easy to manufacture, and low cost (33). Even has such good advantages, very few works have been done on designing the patch antenna or conformal antenna for the ingestible WCE, especially in the 2.4 GHz ISM band.…”

“…The paper also stated that fabrication jobs and effects on other circuit components can be simplified and performance tuning can be resisted without shorting pin. In addition, fractal geometry is miniaturization technique of using self-similarity and space-filling where the example can be found in (15,33). The self-similarity properties can obtain a wideband antenna by lapping a different amount of resonant frequencies together while space-filling could directly reduce the size of the antenna by the mean of lengthening the effective current flow.…”

A sub 1 GHz ultra miniaturized folded dipole patch antenna for biomedical applications

“…Advanced development in antenna designing urges the need to integrate antenna with biomedical applications 1 , especially for cancer treatment. The application of biomedical antenna lies in early-stage cancer detection 2 , 3 , glucose monitoring 4 , Cardiac pacemaker 5 , endoscopy 6 and cancer treatment through hyperthermia.…”