On the Use of Tunable Power Splitter for Simultaneous Wireless Information and Power Transfer Receivers

Quddious, Abdul; Abbasi, Muhammad Ali Babar; Tariq, Muhammad Haroon; Antoniades, Marco A.; Vryonides, Photos; Nikolaou, Symeon

doi:10.1155/2018/6183412

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…The capacitance of varactor diodes can be controlled by DC voltage, resulting in bandwidth or power-dividing ratio change. 1,2,3 . In addition to reconfigurability, NGD is required to overcome beam squint problems in antenna array elements.…”

Section: Introduction 1 Introductionmentioning

confidence: 99%

Design Theory of Compact Power Divider with Reconfigurable Power Division and Negative Group Delay Characteristics

Nair

Natarajamani

2023

Preprint

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This article presents the combined analysis of reconfigurable power division and Negative Group Delay (NGD) in a power divider. A novel composite transmission line (CT) based reconfigurable power divider with high power division ratio, variable negative group delay and lower characteristic impedance is presented in this work. The impedance transformation in composite transmission lines controls both NGD and power division. This power divider possesses a wide range of power division ratios from 1 to 39, adequate isolation, impedance matching, and NGD of-3.4 ns to-4.7 ns in the reconfigurable transmission path. The NGD is achieved without using any additional group delay circuits. Theoretical equations corresponding to the low characteristic impedance of the transmission line sections and that of isolation elements are derived. The measurement results justifies the attainment of high tuning of the power division ratio, and NGD. Isolation and return loss are higher than-15dB at the centre frequency of 1.5GHz. The major contributions of this design can be listed as the wide reconfigurable power division along with negative group delay and reduced size.

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Section: Introduction 1 Introductionmentioning

confidence: 99%

Design Theory of Compact Power Divider with Reconfigurable Power Division and Negative Group Delay Characteristics

Nair

Natarajamani

2023

Preprint

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“…Recently, one of the key developments in wireless communication is the exploitation of the same RF signal for information and energy harvesting. This refers to the concept of simultaneous wireless information and power transfer (SWIPT) [12] systems. Finally, RF EH is widely used in RFID tags that are used for tracking and identification [13].…”

Section: Introductionmentioning

confidence: 99%

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

Quddious¹,

Antoniades²,

Vryonides³

et al. 2020

Recent Wireless Power Transfer Technologies

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Wireless Power Transfer (WPT) is promoted as a key enabling technology (KET) for the widespread use of batteryless Internet of Things (IoT) devices and for 5G wireless networks. RF-to-DC rectifiers are essential components for the exploitation of either ambient RF power or wireless transmitted power from a dedicated source. There are several alternative rectifier topologies which can be selected depending on the desired wireless charging scenario and may include one or more diodes. For full rectification, a minimum of two diodes are needed. The current chapter discusses various implementations of voltage-doubler designs, which revolve around the basic topology of two diodes and two capacitors. Schottky diodes are usually used, in combination with lumped capacitors. Off-the-shelf diodes include both separate diodes and integrated voltage-doubler topologies in a single package. Rectifiers are inherently narrowband, non-linear devices, and the RF-to-DC efficiency, which is usually the figure of merit, depends non-linearly on both the termination load and the received RF power. The bandwidth of the rectifier depends on the preceding matching network.

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Design theory of compact power divider with reconfigurable power division and negative group delay characteristics

Nair

Natarajamani

2023

Sci Rep

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This article presents the combined analysis of reconfigurable power division and negative group delay (NGD) in a power divider. A novel composite transmission line based reconfigurable power divider with high power division ratio, variable negative group delay, and lower characteristic impedance is presented in this work. The impedance transformation in composite transmission lines control both negative group delay and power division. This power divider possesses a wide range of power division ratios from 1 to 39, adequate isolation, impedance matching, and NGD of $$-3.4$$ - 3.4 ns to $$-4.7$$ - 4.7 ns in the reconfigurable transmission path. The negative group delay is achieved without using any additional group delay circuits. Theoretical equations corresponding to the low characteristic impedance of the transmission line sections and that of isolation elements are derived. The measurement results justify the attainment of high tuning of the power division ratio and negative group delay. Isolation and return loss are higher than − 15 dB at the centre frequency of 1.5 GHz. The significant contributions of this design can be listed as the wide reconfigurable power division along with negative group delay and reduced size.

show abstract

On the Use of Tunable Power Splitter for Simultaneous Wireless Information and Power Transfer Receivers

Cited by 9 publications

References 24 publications

Design Theory of Compact Power Divider with Reconfigurable Power Division and Negative Group Delay Characteristics

Design Theory of Compact Power Divider with Reconfigurable Power Division and Negative Group Delay Characteristics

Voltage-Doubler RF-to-DC Rectifiers for Ambient RF Energy Harvesting and Wireless Power Transfer Systems

Design theory of compact power divider with reconfigurable power division and negative group delay characteristics

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