Compact and tissue-insensitive implantable antenna on magneto-dielectric substrate for wireless biotelemetry

Micro & Optical Tech Letters

2020

A compact implantable microstrip patch antenna is proposed with small patch size for biotelemetry applications, which works on Industrial, Scientific, and Medical (ISM) (2400.0-2483.5 MHz) band. Rogers RO Duroid 3010 is used as a substrate as well as superstrate layer of dielectric constant 10.2 and thickness 0.64 mm. The dimensions of antenna are 13.3 × 14.6 mm 2. The frequency range covered by the antenna is 2.26 to 2.71 GHz with appreciable bandwidth of 18.10% and its resonating frequency is 2.45 GHz at which its return loss is −20.7 dB inside skin. For validation of results, the antenna performance is checked inside in-vitro solution of skin mimicking liquid. Thus, a miniaturized skin implantable antenna for biotelemetry applications is proposed.

Section: Resultsmentioning

confidence: 65%

Volume factor ((), VF) = Bandwidth ((), kHz) / Antenna area ((), {mm}^{3})

…”

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Skin and brain implantable inset‐fed antenna at ISM band for wireless biotelemetry applications

Micro & Optical Tech Letters

2020

“…As the antenna must be inserted inside skin; therefore, it is to be as small as possible. For creating a compact size antenna, many techniques are used like as planar inverted‐F antenna (PIFA) structure, 14 meandered, 15 shorting pin, 16,17 patch stacking, 18‐20 spiral 21‐24 shaped designs, and use of high dielectric materials 25‐27 …”

Section: Introductionmentioning

confidence: 99%

“…Last challenge faced while making an implantable antenna is volume factor. Volume factor of antenna can be defined as the ratio of bandwidth of antenna (in kHz) to the area of antenna (in mm 3 ) as shown in Equation ) 24

Volume factor ((), VF) = Bandwidth ((), in kHz) / Antenna area ((), {mm}^{3})

…”

Section: Introductionmentioning

confidence: 99%

In‐silico and in‐vitro testing of an implantable superstrate loaded biocompatible antenna for MICS band applications

Micro & Optical Tech Letters

2020

A superstrate loaded body implantable microstrip patch antenna working on Medical Implant Communications Service (MICS) (402‐405 MHz) band for biotelemetry applications is proposed. A 0.64‐mm thick high‐dielectric material Rogers RO Duroid 3010 is used both as substrate and superstrate of dielectric constant 10.2. Shorting pin is used to make compact antenna with footprint of 13.3 × 14.6 mm2. Appreciable bandwidth of 40% is covered by antenna with return loss of −30.95. In‐silico testing inside skin, brain and three layered tissue models is done to test functionality of antenna in homogeneous as well as inhomogeneous tissue environment. For validation of results the fabricated antenna is successfully tested inside in‐vitro solution of homogeneous skin mimicking liquid.

Small Footprint Biocompatible Antenna for Implantable Devices: Design, In-Silico, In-Vitro and Ex-Vivo Testing

Iran J Sci Technol Trans Electr Eng

2023

In this paper, a miniaturized skin implantable biocompatible microstrip antenna is proposed for biotelemetry applications at 2.4–2.48 GHz. The volume of the antenna is 42.68 mm 3 with dimensions 8.2 × 6.94 × 0.75 mm 3 . Rogers RO Duroid 3010 of 0.25 mm thickness is used for designing the proposed biocompatible antenna. This material is also used as a superstrate to cover the antenna from both sides to provide safety to patients. Further, specific absorption rate (SAR) is analyzed and found 552 W/Kg and 73.2 W/Kg for 1 g- and 10 g-averaged tissue, respectively, at an operating frequency of 2.45 GHz, which makes it biocompatible. An appreciable volume factor of 9371.8 is achieved with a good percentage bandwidth of 16.1%. In-silico, in-vitro and ex-vivo testing is performed for the proper validation of the proposed antenna. The antenna is found to be functional at ISM band, which makes it best suitable for implantable devices.