A low-power CMOS ASK clock and data recovery circuit for cochlear implants

Yan, Hao; Wu, Diancheng; Liu, Yan; Wang, Donghui; Hou, Chao-huan

doi:10.1109/icsict.2010.5667407

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…Recently, Yan et al . [ 35 ] proposed a monostable circuit for low-power CMOS ASK system with clock and data recovery for cochlear implants integrated under 0.18 μm CMOS technology. Pulse width modulation (PWM) signals with delay-locked loops (DLL) are used to recover and resynchronize the clock and data of the system [ 36 ].…”

Section: Ask Modulation and Demodulationmentioning

confidence: 99%

“…Adopting aproper method to choose the suitable modulation to be used for the wireless telemetry depends on the nature and type of the implanted device. Some implanted devices such as brain, retinal, cochlear implants, and wireless capsule endoscopy require high data rate transmission [ 35 , 38 , 39 ]. Thus, the advantages and disadvantages of the suitable modulations used in biomedical devices and biotelemetry systems need to be focused.…”

Section: Current Challenges and Problemsmentioning

confidence: 99%

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Modulation Techniques for Biomedical Implanted Devices and Their Challenges

Hannan

Abbas

Samad

et al. 2011

Sensors

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Implanted medical devices are very important electronic devices because of their usefulness in monitoring and diagnosis, safety and comfort for patients. Since 1950s, remarkable efforts have been undertaken for the development of bio-medical implanted and wireless telemetry bio-devices. Issues such as design of suitable modulation methods, use of power and monitoring devices, transfer energy from external to internal parts with high efficiency and high data rates and low power consumption all play an important role in the development of implantable devices. This paper provides a comprehensive survey on various modulation and demodulation techniques such as amplitude shift keying (ASK), frequency shift keying (FSK) and phase shift keying (PSK) of the existing wireless implanted devices. The details of specifications, including carrier frequency, CMOS size, data rate, power consumption and supply, chip area and application of the various modulation schemes of the implanted devices are investigated and summarized in the tables along with the corresponding key references. Current challenges and problems of the typical modulation applications of these technologies are illustrated with a brief suggestions and discussion for the progress of implanted device research in the future. It is observed that the prime requisites for the good quality of the implanted devices and their reliability are the energy transformation, data rate, CMOS size, power consumption and operation frequency. This review will hopefully lead to increasing efforts towards the development of low powered, high efficient, high data rate and reliable implanted devices.

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Section: Ask Modulation and Demodulationmentioning

confidence: 99%

Section: Current Challenges and Problemsmentioning

confidence: 99%

Modulation Techniques for Biomedical Implanted Devices and Their Challenges

Hannan

Abbas

Samad

et al. 2011

Sensors

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“…-Free Space ( = 2) MetAids to Programmer -Including Building Attenuation Threshold Power (According to[3])…”

mentioning

confidence: 99%

“…There are several wireless IMDs that are used in some disorder treatments i.e. deep brain neorostimulators (DBS)s, cochlear implants, implantable cardiac defibrillators (ICD)/pacemakers, gastric stimulators, insulin pumps [2][3][4][5][6]. But different wireless IMDs for the different disorder treatments will be possible in the future.…”

Section: Introductionmentioning

confidence: 99%

Determining Threshold Distance Providing Less Interference for Wireless Medical Implant Communication Systems in Coexisting Environments under Shadow Fading Conditions

Kulac

2017

SDÜ Fen Bil Enst Der

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Important interference problems will be able to be encountered especially close areas to the hospitals where wireless implantable medical systems' communication traffic occurs heavily in near future. It is possible that these interferences could cause wireless implant devices to malfunction and harmful effects on patients. In this study, it is proposed to determine threshold distance in order to get less interference for wireless implantable medical systems under shadow fading conditions where MICS band and MetAids band users coexist intensely simultaneously. In this method, threshold power according to the [1] is pulled down by adding extra distance margin in order to minimize the interference effects to the MICS systems using confidence interval calculations. Because received signal strength just below the monitoring threshold power according to the [1] brings about much more interferences for the MICS systems even if listen-before-talk technique is applied.

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