Multiband rectenna for microwave applications (original) (raw)

Cross dipoles rectenna for microwave applications

2016 46th European Microwave Conference (EuMC), 2016

This paper addresses recent results obtained in the Ku band by using an innovative cross dipoles rectenna topology. The targeted application is the harvesting of the spill-over losses of microwave antennas for powering autonomous wireless sensors used for satellite health monitoring. The experimental results demonstrate that this compact antenna can provide at least 1 mW of DC power when it is illuminated by an incident electric field of 38 V/m or higher.

A dual polarized multiband rectenna for RF energy harvesting

AEU - International Journal of Electronics and Communications, 2018

The paper presents a multiband dual polarized rectenna for RF energy harvesting in Cband application range. The receiving antenna of the designed rectenna is consisting of a truncated corner square patch loaded with several circular slots, L-slots and U-slot. A proximity coupled feeding arrangement is used for obtaining a wide impedance bandwidth so that the complete C-band from 4-8 GHz can be covered. The proposed antenna has the advantage of compact size and dual polarization since circular polarization is realized at three bands (5.42 GHz, 6.9 GHz and 7.61 GHz) in the-10 dB impedance bandwidth range. For efficient RF to DC conversion a two-stage voltage doubler rectifier is used considering that it provides a higher voltage multiplication with a small threshold voltage at its primary stage. For ensuring maximum RF to DC conversion efficiency; a matching network has been designed and is connected in between receiving antenna and the rectifier circuitry in order to match the antenna and load in different frequency bands. It is observed that a maximum conversion efficiency of 84% is achieved at 5.76 GHz. The proposed rectenna has been fabricated and it is found that measured results are in good match with the simulated results.

A Broadband Rectenna for RF Energy Harvesting from Low Power Levels

In the article, a broadband rectenna is proposed that can harvest energy from low input power levels. A broadband rectenna is designed that can operate between 1.4 GHz and 2.8 GHz with a bandwidth of 1.4 GHz. The proposed rectenna covers two important bands, i.e., GSM 1800 MHz and ISM 2450 MHz. The antenna consists of an antenna and a rectifier. A hexagonal patch antenna is designed with a defective ground structure that can operate from 1.4 GHz to 2.8 GHz. For rectification purposes, the HSMS2850 Schottky diode is used. To achieve good conversion efficiency, a matching circuit (a combination of bandpass and high-pass section) is designed. Maximum simulated conversion efficiencies achieved at 1.8 GHz with a load resistance of 1.3 kΩ are 21%, 36.3%, 51.2%, 63.7%, and 73.4% at power levels of -20 dBm, -15 dBm, -10 dBm, -5 dBm, and 0 dBm, respectively. Simulated conversion efficiency achieved at 2.45 GHz with a load resistance of 2 kΩ is 22.5%, 35%, 46%, 57.2%, and 68.5% at power level...

Design of a 2.45 GHz rectenna for electromagnetic (EM) energy scavenging

2010

A compact dual polarized rectenna operating at 2.45 GHz is presented. It consists of a square aperture coupled patch antenna with a cross shaped slot etched on its surface that permits a patch side reduction of 32.5%. The patch size is 3.4 cm by 3.4 cm. The antenna is dual linearly polarized with each orthogonal polarization received by an appropriately placed coupling slot. The received signal from each slot output is rectified by a voltage doubling circuit and the doubler DC output signals are combined allowing the rectenna receive signals of arbitrary polarization. The circuit is optimized for low input power densities using harmonic balance. Simulated rectifier maximum RF-to-DC conversion efficiency values of 15.7% and 42.1% were obtained for input available power levels of -20 dBm and -10dBm respectively at 2.45 GHz. The measured results are in agreement with the simulation.

Rectenna Design For Electromagnetic Energy Harvesting

ICNCRE 2013

The energy harvesting is the process by which energy from different sources of radiation is captured and stored. The harvesting of this energy would be an alternative energy capable of replacing, totally or partially, the battery of certain micro systems that require a low amount of energy. This paper firstly presents the quantification of the radiated power available in the ambient environment with respect to frequency through various measurements. This quantification of the RF power according to the considered environment is necessary since, it allows to choose frequency bands with the highest power density, and then to estimate the recoverable maximal DC power. Secondly, we present various simulation results under HFSS software to analyze the performance of antenna candidates for this study and which are the first elements constituting the rectennas.

Quad-Band Rectenna for RF Energy Harvesting System

Journal of Electromagnetic Analysis and Applications, 2020

The design of multiband microstrip rectenna for radio frequency energy harvesting applications is presented in this paper. The designed antenna has good performance in the GSM-900/1800, WiFi and WLAN bands. In addition, the rectifier circuit is designed at multi resonant frequencies to collect the largest amount of RF ambient power from different RF sources. The developed antenna is matched with the rectifier at four desired frequencies using several rectifier branches to collect the largest of RF power. The proposed rectenna is printed on FR4 substrate with modified ground plane to achieve suitable impedance bandwidth. The proposed antenna consists of elliptical radiating plane with stubs and stepped modified ground plane. The rectenna resonates at quad frequency bands at (GSM 900/1800, WiFi band and WLAN bands) with rectifier power conversion efficiency up to 56.4% at 0 dBm input power using the HSMS-2850 Schottky diode. The efficiency is more enhanced by using SMS-7630-061 Schottky diode which is characterized by a low junction capacitance and a low threshold voltage to achieve higher conversion efficiency up to 71.1% at the same 0 dBm input power for the same resonating frequency band.

Design Challenges of Rectenna for Energy Harvesting from Microwave Pollution

Asian Journal of Water, Environment and Pollution, 2019

We are always exposed to a significant amount of microwave energy emitted by the wireless fidelity (Wi-Fi), television broadcasting, and different wireless communication systems which has many adverse effects. However, by harvesting the microwave energy from the surrounding, the microwave pollution can be reduced as well as the microwave energy can be effectively utilized. Rectenna is an electronic device which is used to harvest the microwave pollution. In this paper, the design procedure of a rectenna system is described and the key design challenges are highlighted for wireless energy harvesting. The key design parameters include harmonic suppression, the design of low-power rectifier circuits and the effect of load conditions on the rectenna conversion efficiency. The effect of load conditions against rectenna performances is extracted using Advanced Design System (ADS). Effect of different rectifier circuits including Half Wave Configuration and voltage-doubler are in the context of wireless energy harvesting systems. The article gives a comprehensive exposure to the rectenna design, the possibilities of wireless energy harvesting and likewise useful for researchers working in the field of wireless power transfer systems.

Dual-Band Multi-Port Rectenna for RF Energy Harvesting

Progress in Electromagnetics Research C, 2021

In this article, a novel dual-band multi-port compact rectenna design for RF energy harvesting is proposed. An E-shaped coaxial fed microstrip antenna combined with an inverted Lshaped structure is used to achieve a dual-band operation at 0.9 GHz (GSM900) and 2.4 GHz (WiFi) frequency bands with gains of 0.8 dBi and 4.4 dBi, respectively. A shorting post is incorporated in the design, which restricts the antenna size to 50 mm × 47 mm, making the overall rectenna compatible with any sensor nodes. Further, a compact rectifier circuit covering both the frequency bands is designed to obtain a conversion efficiency up to 50% for an input power as low as −20 dBm. The matching circuit ensures that the nonlinear impedance of the rectifier matches with that of the antenna under varying operating conditions. Finally, the rectennas designed are combined and arranged together to form a cubical structure to produce an output voltage as large as 0.5 V for an input power of −20 dBm. With 360◦ cover...

Quad-Band Rectenna for Ambient Radio Frequency (RF) Energy Harvesting

Sensors, 2021

RF power is broadly available in both urban and semi-urban areas and thus exhibits as a promising candidate for ambient energy scavenging sources. In this research, a high-efficiency quad-band rectenna is designed for ambient RF wireless energy scavenging over the frequency range from 0.8 to 2.5 GHz. Firstly, the detailed characteristics (i.e., available frequency bands and associated power density levels) of the ambient RF power are studied and analyzed. The data (i.e., RF survey results) are then applied to aid the design of a new quad-band RF harvester. A newly designed impedance matching network (IMN) with an additional L-network in a third-branch of dual-port rectifier circuit is familiarized to increase the performance and RF-to-DC conversion efficiency of the harvester with comparatively very low input RF power density levels. A dual-polarized multi-frequency bow-tie antenna is designed, which has a wide bandwidth (BW) and is miniature in size. The dual cross planer structure...

Triple-Band Single-Layer Rectenna for Outdoor RF Energy Harvesting Applications

Sensors

A triple-band single-layer rectenna for outdoor RF energy applications is introduced in this paper. The proposed rectenna operates in the frequency bands of LoRa, GSM-1800, and UMTS-2100 networks. To obtain a triple-band operation, a modified E-shaped patch antenna is used. The receiving module (antenna) of the rectenna system is optimized in terms of its reflection coefficient to match the RF-to-DC rectifier. The final geometry of the proposed antenna is derived by the application of the Moth Search Algorithm and a commercial electromagnetic solver. The impedance matching network of the proposed system is obtained based on a three-step process, including the minimization of the reflection coefficient versus frequency, as well as the minimization of the reflection coefficient variations and the maximization of the DC output voltage versus RF input power. The proposed RF-to-DC rectifier is designed based on the Greinacher topology. The designed rectenna is fabricated on a single laye...