A compact peanut-shape printed antenna for bio-telemetric tablet system

Zulkefli, M.S.; Malek, F.; Mat, M.H.; Ronald, S.H.; Jamlos, Mohd Faizal

doi:10.1109/icobe.2012.6179057

Cited by 3 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, most of the research related to the WCE's telemetry system has conducted with the random selection of the system's frequency without proper consideration of the propagation characteristics of the human body on the system's frequency [10]. In light of that, the following upgrades to the capsule-endoscopy system have been proposed: a lowpower, 3-5-GHz,ultra-wideband transceiver [11]; a 15-Mbps, 900-MHz ASK transmitter [12]; a 2.4-GHz, high-data-rate transceiver [13]; a 0.5-GHz, high-speed, high-efficiency system [14]; a 1.4-GHz conformal, ingestible, capsule antenna [15]; and a 2.4-GHz, peanut-shaped, printed antenna for the bio-telemetric tablet [16].…”

Section: Introductionmentioning

confidence: 99%

The Use of a Human Body Model to Determine the Variation of Path Losses in the Human Body Channel in Wireless Capsule Endoscopy

Basar¹,

Malek²,

Juni³

et al. 2013

PIER

View full text Add to dashboard Cite

Abstract-Presently, wireless capsule endoscopy (WCE) is the sole technology for inspecting the human gastrointestinal (GI) tract for diseases painlessly and in a non-invasive way. For the further development of WCE, the main concern is the development of a highspeed telemetry system that is capable of transmitting high-resolution images at a higher frame rate, which is also a concern in the use of conventional endoscopy. A vital task for such a high-speed telemetry system is to be able to determine the path loss and how it varies in a radio channel in order to calculate the proper link budget. The hostile nature of the human body's channel and the complex anatomical structure of the GI tract cause remarkable variations in path loss at different frequencies of the system as well as at capsule locations that have high impacts on the calculation of the link budget. This paper presents the path loss and its variation in terms of system frequency and location of the capsule. Along with the guideline about the optimum system frequency for WCE, we present the difference between the maximum and minimum path loss at different anatomical regions, which is the most important information in the link-margin setup for highly efficient telemetry systems in next-generation capsules. In order to investigate the path loss in the body's channel, a heterogeneous human body model was used, which is more comparable to the human body than a homogenous model. The finite integration technique (FIT) in Computer Simulation Technology's (CST's) Microwave Studio was used in the simulation. The path loss was analyzed in the frequency range of 100 MHz to 2450 MHz. The path loss was found to be saliently lower at frequencies below 900 MHz. The smallest loss was found around the frequency of 450 MHz, where the variation of path loss throughout the GI tract was 29 dB, with a minimum of −9 dB and a maximum of −38 dB. However, at 900 MHz, this variation was observed to be 38 dB, with a minimum of −10 dB and a maximum of −48 dB. For most positions of the capsule, the path loss increased rapidly after 900 MHz, reaching its peak at frequencies in the range of 1800 MHz to 2100 MHz. During examination of the lower esophageal region, the maximum peak observed was −84 dB at a frequency of 1760 MHz. The path loss was comparatively higher during examination of anatomically-complex regions, such as the upper intestine and the lower esophagus as compared to the less complex stomach and upper esophagus areas.

show abstract

Section: Introductionmentioning

confidence: 99%

The Use of a Human Body Model to Determine the Variation of Path Losses in the Human Body Channel in Wireless Capsule Endoscopy

Basar¹,

Malek²,

Juni³

et al. 2013

PIER

View full text Add to dashboard Cite

show abstract

Effects of shell and body tissue simulating liquid (BTSL) thickness on capsule antenna performance

Zulkefli

Malek

Jamlos

et al. 2012

2012 International Symposium on Computer Applications and Industrial Electronics (ISCAIE)

Self Cite

View full text Add to dashboard Cite

In this paper, the study of shell and body tissue simulating liquid (BTSL) thickness and its effects on capsule antenna performance at 2.45 GHz were presented. Two simulation setups which consists two different sets of shell and BTSL position near the capsule antenna were used in the simulation process. The reflection coefficient, directivity, gain and efficiency performance in those simulation setups were determined and compared. The influence of human tissue thickness on the antenna behavior must be considered.

show abstract

Effects of shell and body tissue simulating liquid (BTSL) on the compact peanut-shape antenna performance

Zulkefli

Malek

Jamlos

et al. 2012

2012 IEEE Symposium on Wireless Technology and Applications (ISWTA)

Self Cite

View full text Add to dashboard Cite

In this paper, the study of shell and body tissue simulating liquid (BTSL) effects on compact peanut-shape antenna performance that operate at frequency 2.45 GHz are presented. Two simulation setups which consist of eight different types of simulation were used in the simulation process. Reflection coefficient, bandwidth, radiation pattern and directivity in those simulation setups are determined and compared. The influence of human tissue on the antenna behavior must be considered.

show abstract

A compact peanut-shape printed antenna for bio-telemetric tablet system

Cited by 3 publications

References 4 publications

The Use of a Human Body Model to Determine the Variation of Path Losses in the Human Body Channel in Wireless Capsule Endoscopy

The Use of a Human Body Model to Determine the Variation of Path Losses in the Human Body Channel in Wireless Capsule Endoscopy

Effects of shell and body tissue simulating liquid (BTSL) thickness on capsule antenna performance

Effects of shell and body tissue simulating liquid (BTSL) on the compact peanut-shape antenna performance

Contact Info

Product

Resources

About