In this paper, we utilized villared rectifier technique to harvest wireless energy to overcome previously used RF-WEH rectenna. Our design focuses mainly on a multiple-stage Villard voltage multiplier model to rectify...In this paper, we utilized villared rectifier technique to harvest wireless energy to overcome previously used RF-WEH rectenna. Our design focuses mainly on a multiple-stage Villard voltage multiplier model to rectify the output voltage of the rectenna and transferred it to a dc load. As a starting point, optimization and parameter analysis offer a novel and small antenna for the 2.45 GHz ISM band that precisely matched. Moreover, the fabricated prototype has measured and simulated results have confirmed the antenna’s accuracy in the reflection coefficient. Second, a highly efficient antenna may effectively harvest the electrical energy by combining with the two-stage voltage multiplier circuit presented at the ISM band. Furthermore, the proposed rectenna has the optimum performance compared to state of art rectennas in terms of efficiency, power range, and impedance bandwidth showing pronounced achievement and increasing the DC output power significantly. The prototype is fabricated and experimentally tested to confirm the concept. Measurement results show that the proposed rectenna can be used for RF energy harvesting applications.展开更多
This study was conducted in selected sites of District Bahawalnagar namely,Shaheed Chowk,Chak40/F,Chak 163/7 R and Fareedkot Tiba between March 2019 and August 2019.Sampling techniques included recording of burrows,fl...This study was conducted in selected sites of District Bahawalnagar namely,Shaheed Chowk,Chak40/F,Chak 163/7 R and Fareedkot Tiba between March 2019 and August 2019.Sampling techniques included recording of burrows,flooding,burrow exaction,noose traps and pit fall traps were used to capture Uromast yx hardwickii.During this survey150 individuals were captured from study area for morphological measurement and population estimation.The average snout to vent length(SVL)of male,female and juveniles were(172.50±19.71)mm,(155.50±18.72)mm and(86.25±11.72)mm respectively.The average weight of male,female and juvenile was(93.06±8.56)g,(88.16±7.95)g and(40.16±4.30)g respectively.The relative abundance(Pi)of males,females and juveniles were 0.53,0.33 and 0.13.Indian spiny tailed lizard(U.hardwickii)has been listed in the IUCN Red list and CITES.Major threats to the species in the study area are increase in urbanization,habitat fragmentation,illegal hunting for meat and fat.In this regard strict implementation of the Wildlife act is needed to protect the wildlife of Punjab.Furthermore,comprehensive surveys are required in throughout Punjab to declare conservation status of U.hardwickii.展开更多
文摘In this paper, we utilized villared rectifier technique to harvest wireless energy to overcome previously used RF-WEH rectenna. Our design focuses mainly on a multiple-stage Villard voltage multiplier model to rectify the output voltage of the rectenna and transferred it to a dc load. As a starting point, optimization and parameter analysis offer a novel and small antenna for the 2.45 GHz ISM band that precisely matched. Moreover, the fabricated prototype has measured and simulated results have confirmed the antenna’s accuracy in the reflection coefficient. Second, a highly efficient antenna may effectively harvest the electrical energy by combining with the two-stage voltage multiplier circuit presented at the ISM band. Furthermore, the proposed rectenna has the optimum performance compared to state of art rectennas in terms of efficiency, power range, and impedance bandwidth showing pronounced achievement and increasing the DC output power significantly. The prototype is fabricated and experimentally tested to confirm the concept. Measurement results show that the proposed rectenna can be used for RF energy harvesting applications.
文摘This study was conducted in selected sites of District Bahawalnagar namely,Shaheed Chowk,Chak40/F,Chak 163/7 R and Fareedkot Tiba between March 2019 and August 2019.Sampling techniques included recording of burrows,flooding,burrow exaction,noose traps and pit fall traps were used to capture Uromast yx hardwickii.During this survey150 individuals were captured from study area for morphological measurement and population estimation.The average snout to vent length(SVL)of male,female and juveniles were(172.50±19.71)mm,(155.50±18.72)mm and(86.25±11.72)mm respectively.The average weight of male,female and juvenile was(93.06±8.56)g,(88.16±7.95)g and(40.16±4.30)g respectively.The relative abundance(Pi)of males,females and juveniles were 0.53,0.33 and 0.13.Indian spiny tailed lizard(U.hardwickii)has been listed in the IUCN Red list and CITES.Major threats to the species in the study area are increase in urbanization,habitat fragmentation,illegal hunting for meat and fat.In this regard strict implementation of the Wildlife act is needed to protect the wildlife of Punjab.Furthermore,comprehensive surveys are required in throughout Punjab to declare conservation status of U.hardwickii.
