Design of ultra-compact ISM band implantable patch antenna for bio-medical applications

2022 ◽  
pp. 1-10
Author(s):  
Ahmed Z. A. Zaki ◽  
Ehab K. I. Hamad ◽  
Tamer Gaber Abouelnaga ◽  
Hala A. Elsadek
Keyword(s):  
Patch Antenna ◽  
Biomedical Applications ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Federal Communication Commission ◽  
The Body ◽  
Scattering Parameters ◽  
Ism Band ◽  
Radiating Element ◽  
Implantable Antenna

Abstract In this paper, an ultra-compact implantable antenna for biomedical applications is proposed. The proposed implanted meandered compact patch antenna is implanted inside the body at a depth of 2 mm. The proposed antenna was designed with Roger RO3003 (ɛr = 3) as substrate with an overall size of dimensions 5 × 5 × 0.26 mm3. The radiating element is a square patch antenna with different size rectangular slots and coaxial feeding. The proposed implantable antenna resonates at 2.45 GHz (from 2.26 to 2.72 GHz) frequency with a bandwidth of 460 MHz and a gain of −22.6 dB. The specific absorption rate has been considered for health care considerations, and the result is within the limits of the federal communication commission. The measured and simulated scattering parameters are compared, and good agreements are achieved. The proposed antenna is simulated and investigated for biomedical applications suitability.

scholarly journals Design of dual-band implanted patch antenna system for bio-medical applications

2021 ◽  
Vol 72 (4) ◽  
pp. 240-248
Author(s):  
Ahmed Z. A. Zaki ◽  
Tamer Gaber Abouelnaga ◽  
Ehab K. I. Hamad ◽  
Hala A. Elsadek
Keyword(s):  
Patch Antenna ◽  
Biomedical Applications ◽  
Specific Absorption Rate ◽  
Antenna System ◽  
The Body ◽  
Dual Band ◽  
Patch Antennas ◽  
Scattering Parameters ◽  
Implantable Antenna ◽  
Internal Antenna

Abstract In this paper, a miniaturized implantable antenna system for biomedical applications is presented. The system consists of almost two similar patch antennas, named internal and external. The internal antenna is implanted inside the body at a depth of 2 mm, and the external antenna is to be attached to the body aligned with the internal one. The antenna system consists of implant-side antenna with dimensions are 10.25×10.25×1.27 mm3 , while the external antenna dimensions are 11.1×11.1×1.27 mm3. The proposed antennas designs showed dual resonant frequency on ISM bands (ie , 915 MHz and 2450 MHz ). The computed -10 dB bandwidth considering three-layer human phantom demonstrates that a bandwidth of 870 to 970 MHz and 2.38 to 2.47 GHz for internal and external antennas are achieved. The Specific Absorption Rate (SAR) has been considered for health care consideration. The measured and simulated scattering parameters are compared, and good agreements are achieved. The proposed antenna system is simulated and investigated for biomedical applications suitability.

Coplanar waveguide-fed ISM band implantable crossed-type triangular slot antenna for biomedical applications

2013 ◽  
Vol 6 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Srinivasan Ashok Kumar ◽  
Thangavelu Shanmuganantham
Keyword(s):  
Biomedical Applications ◽  
Biomedical Application ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
High Gain ◽  
Slot Antenna ◽  
Center Frequency ◽  
Ism Band ◽  
High Data ◽  
Implantable Antenna

A novel coplanar waveguide fed Industrial, Scientific, and Medical (ISM) band implantable crossed-type triangular slot antenna is proposed for biomedical applications. The antenna operates at the center frequency of 2450 MHz, which is in ISM band, to support GHz wideband communication for high-data rate implantable biomedical application. The size of the antenna is 78 mm3 (10 mm × 12 mm × 0.65 mm). The simulated and measured bandwidths are 7.9 and 8.2% at the resonant frequency of 2.45 GHz. The specific absorption rate distribution induced by the implantable antenna inside a human body tissue model is evaluated. The communication between the implanted antenna and external device is also examined. The proposed antenna has substantial merits such as miniaturization, lower return loss, better impedance matching, and high gain over other implanted antennas.

scholarly journals In-Vitro Test of Miniaturized CPW-Fed Implantable Conformal Patch Antenna at ISM Band for Biomedical Applications

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 43547-43554 ◽  
Author(s):  
Kumar Naik Ketavath ◽  
Dattatreya Gopi ◽  
Sriram Sandhya Rani
Keyword(s):  
Patch Antenna ◽  
Biomedical Applications ◽  
In Vitro Test ◽  
Ism Band ◽  
Vitro Test

scholarly journals A Compact Broadband Antenna with Dual-Resonance for Implantable Devices

Micromachines ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 59 ◽  
Author(s):  
Rongqiang Li ◽  
Bo Li ◽  
Guohong Du ◽  
Xiaofeng Sun ◽  
Haoran Sun
Keyword(s):  
Patch Antenna ◽  
Absorption Rate ◽  
Return Loss ◽  
Specific Absorption Rate ◽  
Implantable Devices ◽  
Impedance Bandwidth ◽  
Compact Structure ◽  
Resonant Frequencies ◽  
Broadband Antenna ◽  
Dual Resonance

A compact broadband implantable patch antenna is designed for the field of biotelemetry and experimentally demonstrated using the Medical Device Radiocommunications Service (MedRadio) band (401–406 MHz). The proposed antenna can obtain a broad impedance bandwidth by exciting dual-resonant frequencies, and has a compact structure using bent metal radiating strips and a short strategy. The total volume of the proposed antenna, including substrate and superstrate, is about 479 mm3 (23 × 16.4 × 1.27 mm3). The measured bandwidth is 52 MHz (382–434 MHz) at a return loss of −10 dB. The resonance, radiation and specific absorption rate (SAR) performance of the antenna are examined and characterized.

scholarly journals Effect of A Superstrate on On-Head Matched Antennas for Biomedical Applications

Electronics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1099
Author(s):  
Md Rokunuzzaman Robel ◽  
Asif Ahmed ◽  
Akram Alomainy ◽  
Wayne S. T. Rowe
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Performance Improvement ◽  
Direct Contact ◽  
Biomedical Applications ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Conducting Layer ◽  
Electric And Magnetic Field ◽  
Biomedical Diagnosis

The effect of using a superstrate dielectric layer on an on-head matched antenna for biomedical diagnosis applications is investigated. Two on-head matched antennas are considered with different length meandered lines ensuring operation around 0.9 GHz frequency. The first antenna’s conductive radiating structure is in direct contact with the head phantom, whereas the second one utilises a 0.5 mm thick superstrate layer on top of the conducting layer as a buffer. The lateral dimensions of both antennas are held constant at 30 × 30 mm2. The electric and magnetic field distribution is analysed and the power penetration, 50 mm inside the head phantom, is derived from the electromagnetic field surrounding the antennas. Both homogeneous and inhomogeneous head phantoms are considered while evaluating the antennas in terms of their reflection coefficient, current distribution, electric field, magnetic field, specific absorption rate (SAR) and power penetration inside the head. The antennas are fabricated and measured utilizing an inhomogeneous phantom to validate the proposed performance improvement using a superstrate. It is shown that the superstrate antenna achieves a ~8 dB increase in power penetration inside the head phantom along with a 0.0731 W/kg decrease in SAR compared to the antenna without a superstrate.

scholarly journals Miniaturized Circularly Polarized Implantable Antenna for ISM-Band Biomedical Devices

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Ke Zhang ◽  
Changrong Liu ◽  
Xueguan Liu ◽  
Huiping Guo ◽  
Xinmi Yang
Keyword(s):  
Patch Antenna ◽  
Axial Ratio ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Optimized Design ◽  
Circularly Polarized ◽  
Ism Band ◽  
Microstrip Patch ◽  
Compact Size ◽  
Implantable Antenna

A compact circularly polarized antenna operating at 915 MHz industrial, scientific, and medical (ISM) band for biomedical implantable applications is presented and experimentally measured. The proposed antenna can be miniaturized to a large extent with the compact size of 15 × 15 × 1.27 mm3 by means of loading patches to a ring-shaped microstrip patch antenna. An impedance bandwidth of 10.6% (865–962 MHz) for reflection coefficient less than −10 dB can be obtained. Meanwhile, the simulated 3 dB axial-ratio (AR) bandwidth reaches 14 MHz. Finally, the optimized design was fabricated and tested, and the measured results agree well with simulated results.

scholarly journals Design, Simulation and Fabrication of an Implanted Antenna at ISM Band in Body Tissue

2021 ◽  
Author(s):  
Majedeh Seydi ◽  
Mohammad Sajjad Bayati
Keyword(s):  
Patch Antenna ◽  
Biomedical Applications ◽  
Impedance Matching ◽  
Ism Band ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Shorting Pin ◽  
L 14 ◽  
Minced Meat ◽  
Coaxial Probe

Abstract A rectangular meandering-microstrip patch antenna (RM-MPA) with shorting pin for implant antenna and biomedical applications at industrial, scientific, and medical (ISM) band is proposed. The rectangular patch has length of l =14 mm and width of w =9.4 mm. The substrate and superstrate are made of Rogers 3210 with dielectric constant equals 10.2. The RMMPA is placed between the substrate and superstrate dielectric layers whose same thickness equals 0.635 mm. The proposed antenna is fed by a 50-ohm coaxial probe, at the centre of the length and edge of the width of the patch. The input impedance of patch antenna varies with the patch geometry. Thus, the geometry of the patch changed to achieve impedance matching at ISM band. The rectangular patch divided to three sections along width for meandering. The resonance frequency is tuned by meandering each section. The proposed antenna is simulated in free space and skin phantom. Proposed antenna has efficiency of 90%, bandwidth 1.02%. Both radiation pattern and SAR are evaluated which SAR level is below the safety and satisfies SAR standards. Finally, the antenna is tested in minced meat and tissue liquid.

scholarly journals A Triband Slot Patch Antenna for Conformal and Wearable Applications

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3155
Author(s):  
Erfeng Li ◽  
Xue Jun Li ◽  
Boon-Chong Seet
Keyword(s):  
Internet Of Things ◽  
Communication Technology ◽  
Patch Antenna ◽  
Absorption Rate ◽  
Specific Absorption Rate ◽  
Rapid Development ◽  
The Internet ◽  
Body Area ◽  
The Internet Of Things ◽  
Pet Substrate

With the rapid development of wireless communication technology and the Internet of Things (IoT), wireless body area networks (WBAN) have been thriving. This paper presents a triband patch antenna with multiple slots for conformal and wearable applications. The proposed antenna operates at 5.8, 6.2, and 8.4 GHz. The antenna was designed with a flexible polyethylene terephthalate (PET) substrate, and the corresponding conformal tests and on-body performance were conducted via simulation. The antenna demonstrated promising gain and acceptable fluctuations when applied on curvature surfaces. The specific absorption rate (SAR) for on-body simulation also suggests that this antenna is suitable for wearable applications.

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