A fully integrated Software-Defined FDD transceiver tunable from 0.3-to-1.6 GHz

Yang, Dong; Yuksel, Hazal; Newman, Christopher L.; Lee, Changhyuk; Boynton, Zachariah; Paya, Noman; Pedrone, Miles; Apsel, Alyssa; Molnar, Alyosha

doi:10.1109/rfic.2016.7508320

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…In [78], [79], the antenna is connected to the RX using multiple artificial transmission line segments in series. The PA is distributed into multiple sub-PAs and each of the sub-PAs is connected to the nodes in between the transmission line segments.…”

Section: Other Integrated Shared Antenna Interfacesmentioning

confidence: 99%

“…A few of the best integrated antenna interface implementations, in terms of the antenna interface efficiency shown in Table 1, include the antenna interfaces reported in [53] (in 45 nm CMOS), [78] (in 65 nm CMOS) and [24] (in 180 nm CMOS) which have efficiencies of 54.7%, 31.6%, and 27.6%, respectively. In particular, [53] is a multi-feed antenna design which permits the TX and RX ports to be connected to different physical locations on the antenna such that the output from the TX port does not leak into the RX.…”

Section: ) Antenna Interface Efficiencymentioning

confidence: 99%

“…However, the multi-feed antenna design fixes the antenna architecture which prevents it being operated with a commercial off-the-shelf antenna. The high efficiency of [78] is due to no added TX-ANT insertion loss and no DC power consumption with only the ANT-RX NF degrading the antenna interface efficiency. However, typical distributed PA architectures have reduced PA efficiency while the antenna interface efficiency can remain high.…”

Section: ) Antenna Interface Efficiencymentioning

confidence: 99%

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A Survey and Quantitative Evaluation of Integrated Circuit-Based Antenna Interfaces and Self-Interference Cancellers for Full-Duplex

Chen

Garikapati

Nagulu

et al. 2021

IEEE Open J. Commun. Soc.

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Full-duplex (FD) wireless -simultaneous transmission and reception on the same frequency -is a promising technique that can significantly improve spectrum efficiency and reduce communication latency in future wireless networks. To enable FD operation, the powerful self-interference (SI) signal leaking from the transmitter (TX) into the receiver (RX) needs to be suppressed and canceled to an extreme degree at the antenna interface as well as in the RF/analog and digital domains. Various approaches to achieve TX-RX isolation at the antenna interface and SI cancellation (SIC) in the RF/analog and digital domains have been demonstrated, with a focus on using bench-top off-the-shelf components. Recent advances in integrated circuit (IC) implementations of various types of shared antenna interfaces and cancellers in the RF and/or analog baseband (BB) domains have further pushed the frontier of realizing FD wireless in small-form-factor/hand-held devices. Moreover, it is still important to fundamentally study the SIC performance that can be achieved by different types of cancellers. In this paper, we present a first-of-its-kind comprehensive overview on the implementation and comparison of various state-of-theart integrated shared antenna interfaces and SI cancellers in both the RF and analog BB domains. We define two figures of merit (FOM) for the IC-based shared antenna interfaces and SI cancellers, which capture various design considerations and performance tradeoffs including the achievable isolation/SIC, bandwidth, noise figure degradation, TX/SI power handling, and power consumption. In particular, we focus on two types of integrated shared antenna interfaces including electrical-balance duplexers and circulators. We also discuss two types of SI cancellers based on the time-domain and frequency-domain approaches, which respectively employ parallel delay lines and bandpass filters to emulate the SI channel. Based on realistic measurements, we perform extensive numerical evaluations to illustrate and compare the achievable RF SIC performance in different scenarios, as well as discuss various design tradeoffs. Finally, we provide an overview of the IC-based implementations and performance evaluations of both types of cancellers based on our recent work. INDEX TERMS Full-duplex wireless, integrated circuit (IC), antenna interface, self-interference cancellation, systems and testbeds. TINGJUN CHEN (Member, IEEE) received the B.Eng. degree in electronic engineering from Tsinghua University in 2014, and the Ph.D. degree in electrical engineering from Columbia University in 2020. He is an Assistant Professor with the Department of Electrical and Computer Engineering, Duke University and was a Postdoctoral Associate with Yale University from 2020 to 2021. His research interests are in the area of networking and communications with a specific focus on next-generation wireless networks and Internet-of-Things systems.

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Section: Other Integrated Shared Antenna Interfacesmentioning

confidence: 99%

Section: ) Antenna Interface Efficiencymentioning

confidence: 99%

Section: ) Antenna Interface Efficiencymentioning

confidence: 99%

See 1 more Smart Citation

A Survey and Quantitative Evaluation of Integrated Circuit-Based Antenna Interfaces and Self-Interference Cancellers for Full-Duplex

Chen

Garikapati

Nagulu

et al. 2021

IEEE Open J. Commun. Soc.

View full text Add to dashboard Cite

show abstract

“…While some recent works [51] include the full transceiver on chip, the vast majority of other cancellation works [41,40,20,42] use some external elements in their measurements. These elements come in the form of either external antenna interfaces with isolation, external PAs, or both.…”

Section: Chip Implementationmentioning

confidence: 99%

“…Compared with prior art at the time of publication in Table 3.1, this work significantly outperforms all but one prior art for maximum power handling capability. Compared with [51], which can handle up to +14dBm TX power before compressing, this work achieves 25dB higher cancellation of single-tone and modulated data, and has far lower noise figure at low TX power levels. It is also worth noting that while some works either are incapable of performing modulated data cancellation [41] or achieve significantly lower cancellation for modulated data [40], this work can actually achieve higher average cancellation for modulated data vs. single-tone due to the quantization noise limited regime that the canceller operates in.…”

Section: System Measurementsmentioning

confidence: 99%