A Truly Low-Cost High-Efficiency ASK Demodulator Based on Self-Sampling Scheme for Bioimplantable Applications

Gong, Cihun-Siyong Alex; Shiue, Muh-Tian; Yao, Kaisheng; Chen, Tongyi; Chang, Yin; Su, Chun-Hsien

doi:10.1109/tcsi.2008.916422

Cited by 41 publications

(17 citation statements)

References 19 publications

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“…Among high data rate ASK demodulators, [3] and [4] cannot achieve high modulation rate and also require high power consumption. Low power ASK modulators has been reported in [5]- [7] and [10] . In [5] and [7], small modulated voltage is hard to detect.…”

Section: Introductionmentioning

confidence: 99%

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A 2.4pJ/bit ASK demodulator with 100% modulation rate for 13.56MHz NFC/RFID applications

Cai

Pun

Kwong

et al. 2014

2014 IEEE International Symposium on Circuits and Systems (ISCAS)

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In this paper, an Amplitude Shift Keying (ASK) demodulator circuit for Near Field Communication (NFC) target mode or Radio Frequency Identification (RFID) tag is designed by using sample and hold method. It features envelope detector, switch capacitor filter, dynamic comparator, clock extractor and phase generator. This demodulator was demonstrated and simulated in TSMC 0.18um CMOS technology with an average power of 32uW power consumption at 13.56Mbps Non-Return-to-Zero (NRZ) date rate for a carrier frequency of 13.56MHz. The minimum input voltage swing is 200mVpp.

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Section: Introductionmentioning

confidence: 99%

“…Low power ASK modulators has been reported in [5]- [7] and [10] . In [5] and [7], small modulated voltage is hard to detect. In [6], it requires extra circuit to calibrate the phase error between the input signal and the clocks.…”

Section: Introductionmentioning

confidence: 99%

A 2.4pJ/bit ASK demodulator with 100% modulation rate for 13.56MHz NFC/RFID applications

Cai

Pun

Kwong

et al. 2014

2014 IEEE International Symposium on Circuits and Systems (ISCAS)

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“…However, the ASK demodulator in [11] needed a unit gain buffer, which works as a rectifier and causes redundant power consumption. In addition, the bandwidth of all of the prior ASK demodulators is too low to be employed for many industrial, scientific and medical (ISM) bands, including 6.78, 13.56, 27.120, and 40.68 MHz [12]- [14]. All of these public bands are widely utilized in ISM applications.…”

Section: Introductionmentioning

confidence: 99%

Self-Sampled All-MOS ASK Demodulator for Lower ISM Band Applications

Wang

Chen

Kuo

et al. 2010

IEEE Trans. Circuits Syst. II

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An all-MOS ASK demodulator with a wide bandwidth for lower industrial, scientific and medical (ISM) band applications is presented. The chip area is reduced without using any passive element. It is very compact to be integrated in a system-on-chip for wireless biomedical applications, particularly in biomedical implants. Because of low area cost and low power consumption, the proposed design is also easy to integrate in other mobile medical devices. The self-sampled loop with a MOS equivalent capacitor compensation mechanism enlarges the bandwidth, which is more than enough to be adopted in any application using lower ISM bands.Index Terms-Amplitude shift keying (ASK) demodulator, industrial, scientific and medical (ISM) band, self-sampled, wireless communication.

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“…1 Proposed ASKD architecture and its timing diagram Circuit operation: Schmitt triggers have been utilised to recover the clock from the carrier owing to their excellent noise immunity [2,3,6].…”

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confidence: 99%

“…In this Letter we propose a refined Schmitt trigger for DED, which enables the threshold selection and discerns the ASK signal amplitude without using the voltage scaler employed in [3]. Fig.…”

mentioning

confidence: 99%

202pJ/bit area-efficient ASK demodulator for high-density visual prostheses

Kim

Pedrotti

2012

Electron. Lett.

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A fully integrated low-power and area-efficient ASK demodulator is presented. By using a controllable digital envelope detector and a self-biased clock extractor, the threshold-detection level of the demodulator can be adjusted and the clock from the wireless power carrier can be recovered. This implantable demodulator was fabricated in a 0.35 mm CMOS process and tested using inductively-coupled coils with a resonant frequency of 13.56 MHz.

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A Truly Low-Cost High-Efficiency ASK Demodulator Based on Self-Sampling Scheme for Bioimplantable Applications

Cited by 41 publications

References 19 publications

A 2.4pJ/bit ASK demodulator with 100% modulation rate for 13.56MHz NFC/RFID applications

A 2.4pJ/bit ASK demodulator with 100% modulation rate for 13.56MHz NFC/RFID applications

Self-Sampled All-MOS ASK Demodulator for Lower ISM Band Applications

202pJ/bit area-efficient ASK demodulator for high-density visual prostheses

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