Enhancement of locking range through reactive loading on the feedback path

Colwell, M.; Pearson, Linda

doi:10.1109/lmwc.2003.815287

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…For SWIPT systems, the K factor encompasses several loss mechanisms. For the WPT part of SWIPT, there will be additional loss due to polarization mismatch between the power source's electric field intensity vector and the RFIC on-chip energy-harvesting linearly polarized antenna [22]. On the WAN side, this factor K describes the reduction in low power receive signal from the RFIC due to similar antenna polarization mismatches due to the potential random orientation of the RFIC sensor compared with the data-receive antenna.…”

Section: Powering Wireless Sensorsmentioning

confidence: 99%

Breakthroughs in Microwaves: Increasing Signal Strength in Swarms of Wireless Sensors—An Interview With Dr. Aydin Babakhani

Caverly

2021

IEEE J. Microw.

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This article is the first in the periodic Breakthroughs in Microwaves series. This series is intended to highlight recent accomplishments, especially to those new to the field, by researchers in microwave engineering that hold promise for long-term impact in the field. The articles are written after a conversation with the author so that background information can be provided to understand the breakthrough more fully. This first article looks at the pioneering work of Dr. Aydin Babakhani from UCLA in the USA. Dr. Babakhani's work is a novel application based on oscillator injection locking to synchronize, in the RF domain, the transmit frequency from individual sensors in a sensor swarm so that the individual sensors' signals constructively add at the receiver to increase the overall swarm signal level. The article reviews the loss issues in the system, both path loss for the transmit-receive path as well as for wireless power transfer. The article also provides background on RF integrated circuit transceiver circuits so that the reader can more fully understand the novelty of the RF phase synchronization technique. Finally, the article concludes with a short conversation with Dr. Babakhani that provides further insight into this pioneering technique.

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Section: Powering Wireless Sensorsmentioning

confidence: 99%