A novel UWB flexible antenna with dual notch bands for wearable biomedical devices

This study presents a novel UWB flexible antenna with dual band-notched design for wearable biomedical devices. The proposed antenna is designed on Kapton Polyimide-based flexible substrate. This includes a CPW fed circular and triangle structure. The dual notched bands are realized by using two tri...

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Bibliographic Details
Published inAnalog integrated circuits and signal processing Vol. 114; no. 3; pp. 439 - 450
Main Author Dilruba Geyikoglu, Miraç
Format Journal Article
LanguageEnglish
Published New York Springer US 01.03.2023
Springer Nature B.V
Subjects
Anechoic chambers
Antenna radiation patterns
Antennas
Banded structure
Circuits and Systems
Electrical Engineering
Engineering
Frequency shift
Kapton (trademark)
Polyimide resins
Radiation
Signal,Image and Speech Processing
Substrates
Thickness
Wearable technology
UWB
Airbrush printing
Flexible antenna
Wearable biomedical devices
Dual notch
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Summary:This study presents a novel UWB flexible antenna with dual band-notched design for wearable biomedical devices. The proposed antenna is designed on Kapton Polyimide-based flexible substrate. This includes a CPW fed circular and triangle structure. The dual notched bands are realized by using two triangular-shaped spiral slots defected ground structures. The first notched band (2.4–3.7 GHz) is generated for rejecting WLAN and WiMAX, the second notch (5.15–5.725 GHz) is generated for rejecting HyperLAN/2. The designed UWB antenna has approximately a bandwith of 159% (2.05–14 GHz) in simulation. Thus, the designed UWB antenna meets FCC standards. The antenna has an omnidirectional radiation pattern with a maximum gain of 12.7 dB in 8.4 GHz. The proposed antenna is fabricated with the low-cost airbrush printed technique. In this technique, a higher gain value is obtained by controlling the thickness of the conductive layer. Effect of flexibility on the antenna performance is tested for different configurations in the simulation and anechoic chamber environments. According to the results obtained, the overall performance is not affected except for the shift in frequency. Since the antenna has a UWB structure, the frequency shift that occurs in bending is at a tolerable level. The proposed UWB antenna is suitable for wearable biomedical devices, with a high UWB performance.
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ISSN:0925-1030
1573-1979
DOI:10.1007/s10470-023-02146-y