scholarly journals Design and Analysis of a Modified TG Rectifier with Substrate Voltage Compensation Techniques at 45 nm Technology for High Frequency Low Power RF Energy Harvesting

2020 ◽  
Vol 11 ◽  
pp. 1-10
Author(s):  
Manash Pratim Sarma ◽  
Kandarpa Kumar Sarma
Keyword(s):  
Energy Harvesting ◽  
Wireless Network ◽  
High Frequency ◽  
High Speed ◽  
Wide Band ◽  
Input Power ◽  
Rf Energy Harvesting ◽  
Voltage Compensation ◽  
Major Bottleneck ◽  
Rf Energy

- The development of latest generation of wireless communication standards in the recent years has created enormous possibility to deploy high speed wireless network throughout the globe. There is always demand for high speed, seamless data connectivity. But it is a well-known fact that the increase in speed always makes the power consumption higher. Also while attempting to cater to the need of connectivity to a remote location, the major bottleneck is the availability of power. Hence incorporating self-sustainability to a wireless network is becoming the need of the hour. Radio frequency (RF) energy harvesting (EH) is gaining much attention in contemporary communications in this context. In the design of an EH system, the high frequency rectifier plays a significant role. Apart from several design hurdles that exist in a high frequency rectifier, to attain a high percentage conversion efficiency (PCE) at lower input power is the primary design challenge. This paper presents a design of a modified transmission gate (TG) based high frequency rectifier with two substrate voltage compensation techniques, viz. capacitor and MOS based compensation for RF EH system.The proposed capacitor and MOS based techniques enable the rectifier to achieve a PCE upto 86% and 92% at -5dBm respectively in its single stage implementation. This can be claimed to be the highest in-class efficiency as compared to recently published works. The frequency responses with both the techniques depict a wide band performance covering all popular wireless bands. The dynamic power dissipations (DPD) observed are 12nW and 16nW at -5dB, whereas the leakage power (LP) is 20x10-51W and zero respectively. Further such an performance are obtained using minimal number of transistors, viz. 4 and 5 respectively.

scholarly journals A 3-Transistor Low Power Rectifier for Wideband RF Energy Harvesting with a Threshold Voltage Compensation Technique using 45 nm Technology

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Energy Harvesting ◽  
Threshold Voltage ◽  
High Frequency ◽  
High Speed ◽  
Signal Power ◽  
Green Communication ◽  
Rf Energy Harvesting ◽  
Voltage Compensation ◽  
Compensation Technique ◽  
Rf Energy

With the advent of modern wireless communication technology and increasing requirement of high speed network, network life-time is becoming a major area of concern. The need of network power management is gaining attention with the high data network in place and is making a paradigm shift towards green communication. Hence embedding the RF energy harvesting (EH) capability in a wireless network is becoming inevitable. To make RF EH a reality a high frequency rectifier is indeed indispensable along with other circuits in the system. The RF energy needs to be harvested from the available sources in the ambience. It is also seen that the current generation of RF sources radiates at a very low signal power. So, to successfully convert and store this energy, the rectifier must not only be able to provide a sufficiently higher percentage conversion ratio (PCE) but also be able to cater it at a lower range of signal power. This paper presents the design and analysis of a simplified 3-transistor high frequency rectifier. A threshold voltage compensation technique is also incorporated and it achieves a PCE upto 85% at -2dBm in its single stage implementation. This is observed to be one of the highest in-class efficiency as compared to recently reported designs. From the frequency response it is seen to exhibit wide band performance spanning almost all popular wireless bands. The dynamic power dissipation (DPD) is calculated to be 6.25pW at -2dB, whereas the leakage power (LP) is observed to be zero.

scholarly journals A 2.77 μW Ambient RF Energy Harvesting Using DTMOS Cross-Coupled Rectifier on 65 nm SOTB and Wide Bandwidth System Design

Electronics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1173
Author(s):  
Thuy-Linh Nguyen ◽  
Yasuo Sato ◽  
Koichiro Ishibashi
Keyword(s):  
Energy Harvesting ◽  
Orthogonal Frequency Division Multiplexing ◽  
Input Power ◽  
Potential Candidate ◽  
Wide Bandwidth ◽  
Rf Energy Harvesting ◽  
Ambient Environment ◽  
Rf Energy ◽  
Rf Signal ◽  
To Receive

This paper proposes a structure of the μ W RF energy harvesting (RFEH) system that is used for scavenging RF power from an ambient environment. A cross-coupled rectifier (CCR) with floating sub-circuit structures was utilized in the application of dynamic threshold MOSFET (DTMOS) on Silicon on Thin Buried Oxide (SOTB) to obtain high drain conductance of the MOSFET. A wide bandwidth matching between antenna and rectifier was designed to receive energy from the orthogonal frequency division multiplexing (OFDM) RF signal with a bandwidth of 15 MHz at 950 MHz band. Realistic measurements with a 950 MHz LTE mobile phone signal from the ambient environment indicate that an average DC output power of 2.77 μ W is harvested with the proposed RFEH system at a level of −19.4 dBm input power. The proposed RFEH system exhibits the best performance when compared to that of other realistic RFEH systems and is a potential candidate for battery-less Internet of Things (IoT) applications.

scholarly journals Simple Adaptive Rectifier with High Efficiency over a Range of 21 dBm Input Power for RF Energy Harvesting Applications

2021 ◽  
pp. 8-15
Author(s):  
Eman M. Abdelhady ◽  
◽  
Hala M. Abdelkader ◽  
Amr A. Al-Awamry
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Breakdown Voltage ◽  
Adaptive Design ◽  
High Efficiency ◽  
Power Level ◽  
Input Power ◽  
Rf Energy Harvesting ◽  
High Input Power ◽  
Rf Energy

This paper presents a novel simple adaptive and efficient rectifier for Radio Frequency (RF) energy harvesting applications. Traditional rectifiers have maximum RF-DC Power Conversion Efficiency (PCE) over a narrow range of RF input power due to diode breakdown voltage restrictions. The proposed adaptive design helps to extend the PCE over a wider range of RF input power at 2.45GHz using a simple design. Two alternative paths arecontrolled depending on the RF input power level. Low input power levels activate the first path connected to a single rectifier; low power levels make the diode operate below its breakdown voltage and therefore avoiding PCE degradation. High input power levels activate the second path dividing it into three rectifiers. This keeps input power at each rectifier at a low power level to avoid exceeding the diode break down voltage. Simulated PCE of this work is kept above 50% over a range of 21.4 dBm input power from -0.8dBm to 20.6dBm.

scholarly journals An Efficient Reconfigurable RF-DC Converter With Wide Input Power Range for RF Energy Harvesting

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 79310-79318 ◽  
Author(s):  
Danial Khan ◽  
Seong Jin Oh ◽  
Khuram Shehzad ◽  
Muhammad Basim ◽  
Deeksha Verma ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Input Power ◽  
Rf Energy Harvesting ◽  
Rf Energy
Sign in / Sign up

Export Citation Format

Share Document