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- Baghaei-Nejad, Majid, et al.
(författare)
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Fully integrated 1.2 pJ/p UWB transmitter with on-chip antenna for wireless identification
- 2010
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Ingår i: Ultra-Wideband (ICUWB), 2010 IEEE International Conference on. - : IEEE Press. - 9781424453061 ; , s. 237-240
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Konferensbidrag (refereegranskat)abstract
- A fully CMOS integrated impulse ultra wideband transmitter with monolithically on-chipantenna (OCA) for wireless identification is presented. Both OOK and BPSK modulation schemes are supported by the module. The chip is fabricated in standard 0.18μm CMOS technology. Direct measurement verifies the chip operation and wireless transmission measurement shows 7cm operation range with 1.2 pJ/pulse consumption at 10MPps, which is a huge improvement compared with related reported work with OCA.
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| 5. |
- Isfahani, S. M. M., et al.
(författare)
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An ultra-low power multi-tunable triangle wave generator with frequency and amplitude control
- 2010
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Ingår i: ; , s. 236-239
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Konferensbidrag (refereegranskat)abstract
- ultra-low power adjustable triangle wave generator with a multi tunable amplitude and frequency is introduced in this paper. The proposed circuit consists of a Schmitt trigger and a current source. The overall nonlinearity of the TWG circuit is less than 2% in its current-to-frequency transfer characteristic. The tunable frequency and amplitude range are 10KHz to 40KHz and 0.1V-1.7V respectively. The topology is suitable for VLSI realization and can be used in the WINeR system.
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- Kazerouni, I. A., et al.
(författare)
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A 77 nW bioamplifier with a tunable bandwidth for neural recording systems
- 2010
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Ingår i: IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS. - 9781424474561 ; , s. 36-39
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Konferensbidrag (refereegranskat)abstract
- In this paper a low-power low-noise amplifier for neural recording and biomedical applications is presented. The frequency band of the amplifier is tunable. It has a gain of 28.3 dB. The low and the high cut-off frequency can be adjusted from 24 mHz to 30.6 Hz and 4.5 kHz to 7.47 kHz, respectively. The circuit is designed in 0.18μm CMOS process, and it consumes only 77.8 nW at 1.8V supply voltage. The simulation results show a 14.3μV input-referred noise corresponding to 1.32 efficiency factor (NEF). It is a great improvement compared with recent presented works in terms on power consumption and NEF which is vital in neural recording applications.
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| 7. |
- Kianpour, I., et al.
(författare)
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A subthreshold ultra low power 22fJ/conversion flash ADC for RFID sensing applications
- 2011
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Ingår i: 2011 19th Iranian Conference on Electrical Engineering (ICEE). - 9781457707308 - 9789644634284 ; , s. 1-4
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- In this paper an ultra low power Flash ADC for RFID application is presented. Several techniques are used to further reduce the power consumption and relatively elevate the speed of the ADC. These techniques include a low power Track-and-Latch comparator with no static current, large resisters in the resister string, an optimum encoder with only 2 stages using subthreshold design with the aid of low supply voltage of 0.7v for resister string and 0.5v for all logic blocks. In this ADC by absolute approximation the occupied area is equal with area of 16 resisters in the string. The circuit designed in 0.18μm CMOS technology and simulations show that the 4-bit ADC consumes almost 14.5μW at 40MS/s and 93.8nW at 0.1MS/s; however, it minimally dissipates only 22fJ per each conversion step. The results show that the proposed ADC could seriously compete with other low power ADCs in RFID sensing applications such as SAR ADCs.
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| 9. |
- Nilsaz, A. S., et al.
(författare)
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Low power 0.18 um CMOS ultra wideband inductor-less LNA design for UWB receiver
- 2010
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Ingår i: IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS. - 9781424474561 ; , s. 855-858
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Konferensbidrag (refereegranskat)abstract
- This paper presents an inductor-less low-noise amplifier (LNA) design for ultra-wideband (UWB) receivers and microwave access covering the frequency range from 0.4 to 5.7 GHz using 0.18-μm CMOS. Simulation results show that the voltage gain reaches a peak of 18.94 dB in-band with an upper 3-dB frequency of 5.7 GHz. The IIP3 is about 3 dBm and the noise figure (NF) ranges from 3.15-3.86 dB over the band of interest. Input matching is better than -8.79dB and the LNA consumes 5.77mW at 1.8V supply voltage. A figure of merit is used to compare the proposed design with recently published wideband CMOS LNAs. The proposed design achieves a superior voltage gain and tolerable NF, with the additional advantage of removing the bulky inductors. It is shown that the designed LNA without on-chip inductors achieves comparable performances with inductor-based designs.
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- Radiom, S., et al.
(författare)
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Far-field RF powering system for RFID and implantable devices with monolithically integrated on-chip antenna
- 2010
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Ingår i: 2010 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS RFIC SYMPOSIUM. ; , s. 113-116
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Konferensbidrag (refereegranskat)abstract
- A fully integrated far-field powering system for RFID and implantable devices with monolithically fully integrated on-chip antenna in 0.18ÎŒm CMOS is presented. The chip receives power, clock and data wirelessly through RF signal at all the three ISM bands of 915 MHz, 2.45 GHz and 5.8 GHz. Measurements show a minimum input power of -19.41 dBm at 900MHz for chip operation, corresponding to 15.7 meter of operation range with an off-chip 0dB gain antenna. On the other hand, with its on-chip antenna at 5.8 GHz, the chip can be powered-up up to 7.5 cm distance. This is a huge improvement in terms of operation distance compared with other reported similar works with on-chip antenna as well as the off-chip antennas.
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