Enhanced narrow-band operation of ultra-fast rectennas (original) (raw)
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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.
2018 IEEE Wireless Power Transfer Conference (WPTC), 2018
This paper addresses the design and the characterization of a new topology of compact rectenna used for electromagnetic energy harvesting of low incident electromagnetic power densities. The rectenna uses a broadband miniaturized flat dipole antenna with a single diode rectifier. The experimental results demonstrate that the efficiency of the proposed compact rectenna is up to 38% at 900MHz for electromagnetic power density of 0.26µW/cm².
Multiband rectenna for microwave applications
2016 IEEE Wireless Power Transfer Conference (WPTC), 2016
This paper reports recent results obtained in the Ku and K band by using a multiband rectenna. The targeted application is the electromagnetic 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 rectenna can harvest efficiently the incident electromagnetic energy at three different frequencies that roughly correspond to the resonant frequencies of the used cross dipoles antenna array.
An Ism Band Conventional CPW Rectenna for Low Power Levels
Progress In Electromagnetics Research C
This paper presents the design and fabrication of a coplanar waveguide (CPW) rectenna using a sequential modular approach. The rectenna is printed on high permittivity, low-loss board ARLON AD1000 (r = 10.35 and tan δ = 0.0023 @ 10 GHz). The rectifier section is realized with a single reverse-biased schottky diode SMS-7630 in reverse topology for which a diode model is obtained at −20 dBm for frequencies F 0 = 2.45 GHz and 2F 0 = 4.9 GHz. The low-pass filter and the impedance matching are synthesized from passive CPW structures. Co-simulation technique is used to overcome CPW simulation limitations and to integrate the diode characteristics. The antenna consists of a circular slot loop antenna with stub matching such that its input impedance is close to 50 Ω. The goal of this work is to design a rectifier to simplify and speed up the fabrication process of a rectenna array. We reduced the number of processes to etch the rectifier on the board and minimized the number of lumped elements. At −20 dBm, simulation of the rectifier with an ideal impedance matching network shows rectification at 2.45 GHz with efficiency of 12.8%. The rectifier and rectenna show efficiency of approximately 10% at an operating frequency of 2.48 GHz.
Key Components of Rectenna System: A Comprehensive Survey
IETE Journal of Research, 2020
In this paper, a comprehensive survey on the key components of a rectenna system, including antenna configurations, rectifier configurations, impedance matching networks, and RF filter, is outlined. Due to increased applications, the rectenna has occupied a unique place in the RF and microwave engineering. For the last few decades, the research on the rectenna design is focusedon to improve the power conversion efficiency, compatibility and to reduce the design complexity. The main objective of the proposed paper is (i) to accommodate the key design requirements of the rectenna; (ii) highlight the specifications and the possible configurations of the rectenna elements as diode, rectifier, and input source; and (iii) present an inclusive survey of the remarkable research carried out and obtained results.
Study and Design of New Rectenna Structures for Wireless Power Transmission Applications
Advances in Computer and Electrical Engineering, 2020
This chapter presents many research works that have been carried out to deal with the problem of power supply to remote sensors. A 2.45 GHz voltage multiplier rectifier was validated to deliver 18V of output voltage with a conversion efficiency of 69%. Another rectenna was fabricated at 5.8 GHz of the Industrial Scientific Medical band and reach a measured voltage of 7.4V at 18 dBm. The third structure is about a series rectifier working at 2.45 GHz associated with a microstrip low pass filter which produces a supplying voltage of 11.23V. Added to the aforementioned results, the objective in this work is to design, optimize and realize two structures: A dual band patch antenna working at 2.45 GHz and 5.8 GHz, and a compact rectifier circuit at 2.45 GHz for the power supply of low-consumption devices. This rectifier has been designed using Advanced Design System. The bridge topology was employed on an FR4 substrate. A good matching input impedance was observed and high conversion eff...
W-Band Rectenna Coupled With Low-Barrier Mott Diode
IEEE Microwave and Wireless Components Letters, 2016
Design and characterization of a W-band rectenna, consisting of a 2 × 2 patch sub-array integrated with matching elements and rectifying circuitry is presented. The key element of the rectenna is a Mott diode that has permitted considerable improvement of RF-to-DC conversion efficiency in comparison with commercially available GaAs mm-wave diodes. The experimental setup was equipped by two focusing lenses, allowing a concentration of RF power within the beam spot of a 1 cm diameter at a distance of 1 m. The tuneable W-band source delivering 0.4 W RF CW power was employed to perform large-signal experiments and to measure load characteristics of the rectenna. The measured RF-to-DC conversion efficiency with the single Mott diode is approximately 17%, which is approximately 5 times higher than the commercial counterpart (Microsemi).
35 GHz rectenna implemented with a patch and a microstrip dipole antenna
1992 IEEE Microwave Symposium Digest MTT-S
35 GHz rectennas have been developed using a patch and a microstrip dipole antenna. The power conversion efficiencies from RF to DC were measured as 29% and 39% with an input power of 120 mW. The multi-reflection method developed for the analysis of a mixer was used to analyze the performance of a 35 GHz rectenna using a Ka-band mixer diode. Through this analysis, the effect of the reactive elements of the diode on the efficiency were investigated and the optimum operating circuit conditions and the maximum conversion efficiency were obtained.
DESIGN OF A SECOND-GENERATION KOCH MICROSTRIP DIPOLE RECTENNA
2022
Microwave power transmission is one of the most popular approaches for wireless power transmission. It describes a method of harnessing ambient frequency by the use of rectennas. This paper intends to dive deep into the knowledge of microwave power transmission. A rectenna consisting of a second generation, mirrored Koch fractal dipole was designed from a normal dipole initiator to be able to receive 2.4 GHz ambient frequency which it converts to an AC signal. The AC signal is then converted to a DC output through a process of conversion by a voltage doubler rectification circuit consisting of two 100pF capacitors and two SMD SS12 Schottky diodes. The rectifier is impedance matched to its corresponding antenna element through a stub matching network, fabricated on the back of the antenna, consisting of a certain length and width of conductor material purposely designed for the required application. The antenna and matching circuit were fabricated on an FR-4 substrate of dielectric permittivity = 4.3. The fractal dipole antenna achieved a gain of 4.0943DBi which was an increase from the 2.28 DBi that its initiator dipole had achieved. The VSWR improved from 1.208 to 1.15, while the reflection coefficient was observed at -23.35 DBi. The design and simulation were carried out with CST (Computer Simulation Technology) and ADS (Advanced Design System) software. The simulated results show a rectified DC output of 78.5mV, and approximately 0.045 mW received power for a transmitted power = 0.1W. This project aimed to investigate wireless microwave power transmission and the conversion of electromagnetic waves to potentially usable DC output.