A dual mode UHF EPC Gen 2 RFID tag in 0.18 μm CMOS

Najafi, Vali; Mohammadi, Siamak; Roostaie, V.; Fotowat-Ahmady, Ali

doi:10.1016/j.mejo.2009.11.005

Cited by 9 publications

(5 citation statements)

References 4 publications

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“…For this design, the power consumption is equal to 0.47mW. This is relative high as compare to [5], but the latter employed very complex power optimization techniques such as clock gating and operand isolation to achieve 0.22 mW.…”

Section: Discussionmentioning

confidence: 99%

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Power Management Circuit for Semi-Passive UHF RFID Transponder

Yong

Mohd-Yasin

2022

2022 IEEE International Conference on Semiconductor Electronics (ICSE)

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This work develops a power management system that switches between RF rectified power and internal battery to power RFID transponder operating at ultra-high frequency band (860-915 MHz), with operating voltage of 1.8V circuit. The proposed design employs a single stage full wave rectifier, 4stage Dickson charge pump and a novel switching circuit. The power management unit is able to sustain the operation of 1.82V, 15uA at 120KΩ load. This is comparable with the performances of previously published works, but with less transistor counts due to the efficient design.

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Section: Discussionmentioning

confidence: 99%

“…The wake up mode is designed to be power sensitive, where it will be waked-up only when it is located in the interrogating field. Najafi et al [5] used elaborated clock gating and operand isolation techniques.…”

Section: Introductionmentioning

confidence: 99%

Power Management Circuit for Semi-Passive UHF RFID Transponder

Yong

Mohd-Yasin

2022

2022 IEEE International Conference on Semiconductor Electronics (ICSE)

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“…In the physical layer, the forward link is achieved by ASK modulation using Pulse-Interval Encoding (PIE) while in the backward link, the tags broadcast its ID to the interrogator by backscattering the amplitude and/or phase of the Radio Frequency carrier modulation by means of FM0 or Miller-Modulated Subcarrier (MMSC) encoding scheme. The protocol can include several data rate ranges, i.e., [26.7-128 kbps] for the forward link and [5-640 kbps] for the backward link [18]. Also, the communication link is halfduplex.…”

Section: Epc Gen2 Principalmentioning

confidence: 99%

“…The number of clock cycles during the RTCal signal is calculated and then divided by two to fix a pivot threshold. If the number of cycles is less than this threshold, the signal is a data-0 symbol, else, it is a data-1 symbol [18]. In the tag Identification Layer, the reader accomplishes the tag population by three elementary operations.…”

Section: Epc Gen2 Principalmentioning

confidence: 99%

Behavioral Simulation of ISO 18000-6 Type-C Class 1 Gen2 Protocol for RFID UHF Transponder and its Application as Anti-collision Protocol in Interference Case

Saadi¹,

Rnnane²,

Touhami³

et al. 2018

IJET

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In RFID systems, the Transponder Protocol usually uses the standard ISO 18000-6 Type-C Class 1 Generation 2, originally developed to communicate with the reader. Since a typical RFID system could be used in a myriad of tasks from product identification to environmental sensing, behavioral software functionality and hardware cost constraints are extremely constricted, principally due to their ¶standard’s requirements.¶ Thus, in this paper, an advanced behavioral simulation of the Tag ID layer of ISO 18000-6 Type-C protocol is proposed with all its states, commands and functionality, a crucial step toward effective design and test. The approach was then successfully applied to collision issues in interference case.

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“…In [2] the signal envelope is consistently compared with the fixed voltage which causes difficulty in the data detection in low voltages of RF input signal. The LPF stage in [3, 4] includes RC circuit which has the drawback of large resistor and capacitor for decreasing the rapid variation of envelope voltage. The RC circuit in [5] consists of weighted resistors which culminate in high chip area.…”

Section: Introductionmentioning

confidence: 99%

Threshold voltage-level change in ASK demodulator related to RF input signal amplitude for the ultra-high frequency RFID passive tag

Dastanian¹,

Abiri

Taherinia

2015

Int. J. Microw. Wireless Technol.

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In this paper, an amplitude shift keying (ASK) demodulator with 100% modulation depth is proposed. In order to achieve the higher power and wider reading range the designed ASK demodulator works in the ultra-high frequency. In this design, the average detector and voltage divider are used in order to define the appropriate threshold voltage level for the radio frequency input signal which leads to the accurate data detecting even at long distances between the tag and reader. In addition, for diminishing the power dissipation of the proposed demodulator, an enable input is used in the buffer and comparator. This circuit is simulated in 0.18 μm complementary metal–oxide–semiconductor (CMOS) technology with Cadence software. Its power dissipation and chip area are 3.9 nW and 0.0025 mm2, respectively.

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A dual mode UHF EPC Gen 2 RFID tag in 0.18 μm CMOS

Cited by 9 publications

References 4 publications

Power Management Circuit for Semi-Passive UHF RFID Transponder

Power Management Circuit for Semi-Passive UHF RFID Transponder

Behavioral Simulation of ISO 18000-6 Type-C Class 1 Gen2 Protocol for RFID UHF Transponder and its Application as Anti-collision Protocol in Interference Case

Threshold voltage-level change in ASK demodulator related to RF input signal amplitude for the ultra-high frequency RFID passive tag

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