A Novel UWB Discone Antenna for Biomedical Applications

Ghafari, Mehran; Adjrad, Mounir; Ghavam, Mohammad

doi:10.1109/ems.2013.22

Cited by 7 publications

(7 citation statements)

References 7 publications

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“…The total received power can be calculated from equation (9) by applying equation (10). We can rewrite it in logarithmic format (dB) for both frequencies as: P r 3.5 = EIRP dB + 4 + 27.5 − 20 log(3500) −20 log(0.023) − 9.82 (11) and P r 6.1 = EIRP dB + 4 + 27.5 − 20 log(6100)…”

Section: Receiver Antenna and Power Analysismentioning

confidence: 99%

“…Several antennas (Patch, Loop, Bowtie) have been designed and simulated, however, the radiation efficiency reduced significantly as antenna is placed in close proximity to the skin surface (10 -15 cm distance) due to high reflection. As the result, we propose to use the UWB discone antenna from [11] according to its good radiation and directivity in response to the skin reflection and because it operates at lower-band of the UWB frequency range. In addition, the antenna has a wide bandwidth, small dimension ( 26 mm for largest length) and suitable for UWB biomedical applications.…”

Section: System Topologiesmentioning

confidence: 99%

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UWB power propagation for bio-medical implanted devices

Ghafari

Brennan

Ghavami

2015

2015 17th International Conference on E-Health Networking, Application &Amp; Services (HealthCom)

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Abstract-This work presents a study of ultra wideband (UWB) technology to compute the energy transmission level as an electromagnetic impulse traveling from the transmitter antenna into the human body, and reaching the receiver antenna. The consideration is based on two center frequencies at 3.5 GHz which occupies 1 GHz bandwidth and at 6.1 GHz occupying 6 GHz bandwidth. A small discone antenna with gain of 1.8 dBi is employed as the transmitter antenna and a designed implantable patch antenna with gain of 4 dBi is also used as the receiver antenna. The distance between two antennas is 23.6 mm and the tissue attenuation has been considered for two layers including skin and fat with thickness of 2 mm and 9.6 mm respectively. The computation is accomplished for one way-link UWB radar system with respect to FCC regulation, UWB antenna characteristic and Biological tissue model focusing on attenuation affects. The attenuation is based on the response of the transmitted incident power to reflection, absorption and thickness of the human tissue including frequency-dependent parameters such as permittivity and conductivity. Computer simulation results demonstrate the power comparison for two center frequencies in terms of bandwidth and attenuation. Since the lower band of UWB is suitable for radiation into the human body due to the greater penetration of signals, the results indicate that despite the increasing frequency from 3.5 GHz to 6.1 GHz, there is only minor power variations at the receiver.

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Section: Receiver Antenna and Power Analysismentioning

confidence: 99%

Section: System Topologiesmentioning

confidence: 99%

UWB power propagation for bio-medical implanted devices

Ghafari

Brennan

Ghavami

2015

2015 17th International Conference on E-Health Networking, Application &Amp; Services (HealthCom)

Self Cite

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“…According to the aforementioned requirements, conical skirt monopoles or discone antennas could be a good candidate owing to its really compact structure, its omnidirectional radiation pattern within the entire frequency range and its large bandwidth. This kind of antenna is widely used within UWB frequency band [73], [74]. Hence, these kinds of antennas could comply with the requirements of the WCE.…”

Section: Gainmentioning

confidence: 99%

“…As mentioned in the previous section, the antenna should be resized in order to t into the capsule. Introducing some steps in the conical structure could be an optimization technique to resize the antenna [74]. In this way, the current ow in the side of the cone is kept.…”

Section: Resizing and Optimization Of The Antenna Model In Free Spacementioning

confidence: 99%

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UWB radio channel and diversity characterization for wireless implanted devices

Estellés¹

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DC ground compact wideband omnidirectional vertically polarised slot loop antenna for 4G long‐term evolution applications

Cai¹,

Qi²,

Weng

et al. 2018

IET Microwaves, Antennas & Propagation

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A compact, wideband, omnidirectional, vertically polarised antenna without electrostatic discharge problems is proposed in this study for 4G long‐term evolution applications. The proposed antenna is composed of three identical basic radiators separated by an angle of 120°. The basic radiator is based on a slot loop which is a wideband and DC ground structure. By bending the basic radiators, the antenna achieves better impedance matching and lower gain variation in the horizontal plane in a compact size. The proposed antenna reaches a fractional bandwidth of 45.5% for the voltage standing wave ratio (VSWR) <1.5, a peak gain from 2.4 to 3.8 dBi with a gain ripple around 2 dB in the omnidirectional plane. It operates from 1700 to 2700 MHz, covering most 4G long‐term evolution frequency bands. Both simulation and measurement of a prototype is done in this study to verify the antenna performance.

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A Novel UWB Discone Antenna for Biomedical Applications

Cited by 7 publications

References 7 publications

UWB power propagation for bio-medical implanted devices

UWB power propagation for bio-medical implanted devices

UWB radio channel and diversity characterization for wireless implanted devices

DC ground compact wideband omnidirectional vertically polarised slot loop antenna for 4G long‐term evolution applications

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