Related Experiment Video
Updated: Sep 29, 2025
10:03
Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment
Published on: July 22, 2022
4.6K
Design and Evaluation of a Button Sensor Antenna for On-Body Monitoring Activity in Healthcare Applications
Shahid Muhammad Ali1, Cheab Sovuthy1, Sima Noghanian2
1Department of Electrical and Electronic Engineering, Universiti Teknologi, PETRONAS Bander Seri Iskandar, Tronoh 32610, Perak, Malaysia.
Micromachines
|March 26, 2022
Summary
This study presents a robust dual-band button antenna for wireless body area network (WBAN) systems, offering excellent performance for on-body monitoring. The compact sensor antenna ensures reliable wireless communication with minimal impact from body proximity and movement.
Area of Science:
- Electrical Engineering
- Biomedical Engineering
- Antenna Design
Background:
- Designing antennas for wireless body area network (WBAN) systems is challenging due to close coupling with the human body.
- Existing solutions often face limitations in robustness and performance when integrated with wearable sensors.
Purpose of the Study:
- To propose a mechanically robust, dual-band button antenna integrated with a wireless sensor module on a printed circuit board (PCB).
- To evaluate the antenna's performance for on-body monitoring applications, focusing on radiation characteristics, efficiency, and body proximity effects.
Main Methods:
- A dual-band button antenna was designed and integrated with a wireless sensor module on a PCB.
- Simulated and measured results were compared to validate the design.
- Performance metrics including reflection coefficient (S11), gain, radiation efficiency, and specific absorption rate (SAR) were assessed.
- Range tests were conducted to evaluate coverage in indoor and outdoor environments.
Main Results:
- The proposed system exhibits a small footprint with good radiation characteristics and efficiency in both free space and on-body conditions.
- Measured results show high radiation efficiency (up to 92.51%) and gain (up to 6.70 dBi) across lower and upper bands.
- Performance remained minimally affected by bending, movement, and fabrication tolerances.
- Specific absorption rate (SAR) values were below regulatory limits.
- Experimental range tests confirmed coverage up to 40 meters.
Conclusions:
- The developed dual-band button antenna is a mechanically robust and high-performance solution for WBAN systems.
- Its design offers excellent radiation efficiency and gain, suitable for on-body monitoring.
- The antenna's resilience to physical variations and its substantial coverage range make it a promising candidate for wearable healthcare applications.
Related Concept Videos
01:14Assessing Body Temperature - Oral
856
Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
856
01:14Assessing Body Temperature - Axilla
686
Procedural Guide for Assessing Axillary Body Temperature using a Digital Thermometer:
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
Step 1: Perform hand hygiene and put on clean gloves to maintain infection control and prevent cross-contamination.
Step 2: Prepare the patient by explaining the procedure to ensure understanding and cooperation. Ensure privacy, expose the axilla, and inform the patient that minimal movement is crucial for an accurate reading.
Step 3: Adjust the patient’s clothing to expose only the axilla. It minimizes...
686
01:14Assessing Body Temperature - Tympanic membrane
682
Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
682