An On-Chip Configurable Receiver With &gt;55-dB Tx Leakage Suppression for UHF RFID Reader

Guo, Qiang; Zhai, Yunkai; Tan, Xi; Min, Hao

doi:10.1109/lmwc.2019.2907173

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…1. analog approaches with the need for custom design of some key elements [6] [7] [8] [9] 2. digital approaches with the need for custom design of active cancellation systems of different complexities [10] or recurring to custom integrated designs as [11] The purpose of this work is to propose a novel full-analog self-jamming canceller scheme and verify its feasibility using off-the-shelf components and an innovative modular microwave technology, without resorting to custom design.…”

Section: Discussion Of Related Work and Contributionmentioning

confidence: 99%

Experimental Implementation Of a Low Cost Full Analog Self-Jammer Canceller for UHF RFID Devices

Rossi¹,

Liberati²,

Frasca³

et al. 2020

Preprint

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Section: Discussion Of Related Work and Contributionmentioning

confidence: 99%

Experimental Implementation Of a Low Cost Full Analog Self-Jammer Canceller for UHF RFID Devices

Rossi¹,

Liberati²,

Frasca³

et al. 2020

Preprint

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“…In recent years, many transceiver systems based on UHF RFID readers have been manufactured [3][4][5][6][7]. Among them, some circuit structures [6,7] have been proposed to realize self-jamming signal suppression. Other works with only the SJC circuit are also proposed in [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

A Fully Integrated Passive Self-Jamming Cancellation Architecture with Fast Settling Time for UHF RFID Reader

Chen

Jiang

et al. 2022

Electronics

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This paper presents a fully integrated passive self-jamming cancellation (SJC) circuit in 0.18 µmComplementary Metal Oxide Semiconductor (CMOS) technology for ultra-high frequency (UHF) radio frequency identification (RFID) applications. Based on the active amplitude and phase control, a novel passive variable capacitor array and signal combiner are adopted instead of a traditional variable amplifier/attenuator and a phase shifter to reduce the circuit complexity and thus achieve higher linearity and low noise. We use an improved cancellation algorithm based on the local search method to quickly and accurately find the cancellation point that minimizes the self-jamming signal power. The simulation and measurement results are constant, and a suppression of 38 dB can be achieved in the working frequency of 860–960 MHz. The cancellation algorithm can be finished within 0.5 ms. These results indicate that the designed SJC circuit can be a promising candidate for UHF RFID applications.

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“…Digital approaches with the need for custom design of active cancellation systems of different complexities [10] or recurring to custom integrated designs as in [11].…”

mentioning

confidence: 99%

“…The adaptive cancellation has allowed a typical isolation of around 30 dB with a good receiver NF less than 1 dB. A deeply integrated solution has been proposed in [11] with a small, fully specialized CMOS chip able to reach a carrier suppression of around 55 dB with a receiver NF of more than 18 dB. Regardless of the approaches used in these anti-self-jam solutions, it is important to remember that while the main goal is to achieve high isolation between the transmitter and the receiver, it is equally important to minimize the insertion loss between the antenna and the receiver.…”

mentioning

confidence: 99%

Experimental Implementation of a Low-Cost, Fully-Analog Self-Jamming Canceller for UHF RFID Devices

Rossi¹,

Liberati²,

Frasca³

et al. 2020

Electronics

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It is quite common for transceivers to operate with the RF receiver and transmitter working on different time slots. Typical applications are radars and transceivers in the field of communications. Generally, the receiver is turned off when the transmitter broadcasts and vice versa. This is done in order to prevent the transmitter from blinding the receiver or causing the RF low noise amplification (LNA) stage to saturate. When keeping a receiver active, some leakage of RF energy is inevitable, and therefore shielding is applied to mitigate spurious signals. However, there are many applications wherein the receiver cannot be turned off. To address these applications, we investigate the design and performance of a fully-analog self-jamming canceller able to operate in UHF (Ultra High Frequency) RFID devices. While the traditional cost to design and build this type of topology can be quite high, our proposal is based on a low-cost physical approach. In addition to using common SMT (Surface Mount Technology) devices, we leveraged a new piece of modular technology offered by X-Microwave which allows designers to easily produce RF solutions with a broad portfolio of modular system drop-in blocks. A prototype was realized and the measured results are in close agreement with theoretical simulations. Significant damping of the leaked signal in the receiving channel was realized.

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An On-Chip Configurable Receiver With >55-dB Tx Leakage Suppression for UHF RFID Reader

Cited by 8 publications

References 6 publications

Experimental Implementation Of a Low Cost Full Analog Self-Jammer Canceller for UHF RFID Devices

Experimental Implementation Of a Low Cost Full Analog Self-Jammer Canceller for UHF RFID Devices

A Fully Integrated Passive Self-Jamming Cancellation Architecture with Fast Settling Time for UHF RFID Reader

Experimental Implementation of a Low-Cost, Fully-Analog Self-Jamming Canceller for UHF RFID Devices

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