To realize an ultra wideband (UWB) bandpass filter (BPF) in wireless communications, a device is developed using new ring filter. The compact, with low insertion loss, sharp rejection and constant group delay within the UWB pass band. made to control attenuation pole frequency by adjusting both stub impedance. A center bandwidth of 5-stage BPF are designed based on transmission line model. circuit conditions two poles at either side passband given together controlling them.

A car-roof photovoltaic has enormous potential to change our society. With this technology, 70% of a car can run on the solar energy collected by panel its roof. Unfortunately, it is not simple extension conventional technology. This paper lists what we need do achieve goal running majority cars renewable energy, after clarification difference In addition technological development, standardization will be important and list was made highlighting standardization.

Abstract Development of high‐efficiency solar cell modules and new application fields are significant for the further development photovoltaics (PVs) creation clean energy infrastructure based on PV. Notably, PV‐powered vehicle applications is desirable very important this end. According to NEDO's Interim Report “PV‐Powered Vehicle Strategy Committee,” a broader PV markets with more than 10 GW 50 in 2030 2040, respectively, expected be established when vehicles developed. Cumulative capacity...

Integrated photovoltaics are an emerging technology which can extend the range of electric vehicles. However, up to now there is a lack consensus method that would provide consumers with estimate fraction annual driving could be covered by solar power generated onboard in different usage scenarios and locations. To address this, we assess energy implications vehicle integrated for commuter car light delivery van six climatic regions typical daily profiles over ten-year period. The analysis...

A full-wave analysis of a circular disk conductor printed on dielectric substrate backed by ground plane is presented. The method based the Galerkin's applied in Hankel transform domain and numerically quite efficient. Several numerical examples are compared with available experimental data. agreement found to be good validity present confirmed.

A physics-based dipole moment source reconstruction is proposed to estimate the near-field coupling between a liquid crystal display panel cellphone's cellular antenna. Based on understanding of current distribution source, magnetic reconstructed replace real radiation that located at edge flexible printed circuit board. To characterize from equivalent victim antenna, noise transfer coefficient proposed. The can be calculated scanning and direct measurements using wideband source. are...

The energy yield of vehicle-integrated photovoltaics (VIPV) differs from that standard (PV). It is mainly by the difference solar irradiance onto car roof and bodies as well its curved shape. Both meaningful practical modeling measurement for VIPV need to be established, rather than extension current technologies. modeled a random distribution shading objects orientation with correction surface PV modules. body done using five pyranometers in local axes on one year. measured dynamic used...

Development of photovoltaic (PV)-powered vehicles is very important to play a critical role in future carbon neutrality society because it has been reported that the vehicle integrated PVs (VIPVs) have great ability reduce CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> emission from transport sector. Usage high-efficiency solar cell modules essential due limited installable area PV on exterior. This article presents test driving data...

Transparent, core-free and good quality single crystals of Li 2 B 4 O 7 have been successfully grown by the Czochralski method. All dielectric, elastic piezoelectric constants, their first- second-order temperature coefficients determined measuring resonant antiresonant frequencies bars plates with various orientations. The theoretical experimental results show potential usefulness for bulk wave or SAW applications. Further, measurements on optical, acousto-optic electro-optic properties...

ABSTRACT III–V concentrator photovoltaic systems attain high efficiency through the use of series connected multi‐junction solar cells. As these cells absorb over distinct bands spectrum, they have a more complex response to real illumination conditions than conventional silicon Estimates for annual energy yield made assuming fixed reference spectra can vary by up 15% depending on assumptions made. Using detailed computer simulation, behaviour 20‐cell InGaP/In 0.01 GaAs/Ge system was...

A 30 kW concentrator photovoltaic power plant was constructed and has started operation with the following new technologies: Concentrating PhotoVoltaic (CPV) tracker developed for high wind area like Korea Japan by Daido Steel. (The consumption of tracking motors only 19.6 W, namely 0.07% rated power.) With improved optics that reduce mismatch losses associated optical aberrations, an efficiency 25.8% achieved under standard testing conditions (STC) even in a large 23.8 m2 array size. rapid...

Abstract This paper overviews photovoltaic R&amp;D projects in Japan. Recently, world‐record and second highest efficiencies of various types solar cells have been demonstrated under the New Energy Industrial Technology Development Organization Project: 44.4% (under concentration) 37.9% 1 sun) InGaP/GaAs/InGaAs inverted metamorphic 3‐junction by Sharp, 26.7% single crystalline Si heterojunction back‐contact cell Kaneka, 22.3% copper indium gallium selenide Solar Frontier, a‐Si/μc‐Si/μc‐Si...

Abstract A temperature accelerated life test on commercial concentrator lattice‐matched GaInP/GaInAs/Ge triple‐junction solar cells has been carried out. The acceleration of the aging accomplished by subjecting at temperatures markedly higher than nominal working inside a concentrator, and photo‐current condition (820 X) emulated injecting current in darkness. Three tests different have failure distributions across three fitted to an Arrhenius–Weibull model. An Arrhenius activation energy...

Development of highly-efficient photovoltaic (PV) modules and expanding its application fields are significant for the further development PV technologies realization innovative green energy infrastructure based on PV. Especially, solar-powered vehicles as a new is highly desired very important this end. This paper presents impact cell/module conversion efficiency reduction in CO2 emission increase driving range electric vehicles. Our studies show that utilization (higher than 30%) module...

Building-integrated photovoltaics (BIPVs) and vehicle-integrated (VIPVs) receive solar irradiance through non-uniform shading objects. Standard scalar calculations cannot accurately determine the of BIPV VIPV systems. This study proposes a matrix model using an aperture to calculate horizontal vertical planes affected by can be extended on applying local coordinate system. The 3D is validated simultaneous measurement five orientations (roof four sides, front, left, tail, right) car body. An...

A new and simple module structure for the 500/spl times/ concentrator made by printed epoxy a copper sheet on aluminum plate was proposed. The heat analysis done showed that around 10 degree rises at surface of cell compared to normal irradiated flat-plane expected without help classical sinks. An outdoor test confirmed its cooling performance.

For modeling the energy generation of three-dimensional car roof photovoltaic (PV) panels, it is essential to define a scientifically accurate method model amount solar irradiance received by panel. Additionally, average annual incident on roofs must be evaluated, because PV module often shaded during driving and when parked. The curve-correction factor, which unique value depending curved shape module, defined in this paper. factor was calculated using ray-trace simulator. It found that...

We investigate the impact of nonplanar panels on power generation in case photovoltaic mounted vehicles. The vehicles is analyzed using numerical geometric model, comprising incident angle distribution irradiation. calculated generated by equipped roof, side, and tilted surfaces vehicles, showing that even which are fitted vertically to ground, generate more than a quarter total as panel horizontal ground. Furthermore, we evaluated curve correction factor reflects relative with respect...