Current Issue : April - June Volume : 2018 Issue Number : 2 Articles : 5 Articles
A new floating emulator for the flux-controlled memristor is introduced in this paper. The proposed emulator circuit is very\nsimple and consists of only two current feedback operational amplifiers (CFOAs), two analog multipliers, three resistors, and two\ncapacitors.The emulator can be configured as an incremental or decremental type memristor by using an additional switch. The\nmathematical model of the emulator is derived to characterize its behavior. The hysteresis behavior of the emulator is discussed\nin detail, showing that the pinched hysteresis loops in V-...
This paper presents an integrated Hall switch sensor based on SMIC 0.18 ...
The purpose of this study was to explore a novel approach to power hybridization in relation\nto its effectiveness in an unmanned ground vehicle (UGV). This hybridization method is modeled\nafter the power distribution methods found in living organisms, which utilize glycogen stores and\nadipose tissue to optimize power and energy density strengths and weaknesses. A UGV rover was\nconstructed with an appropriate distribution of power storage elements creating separate power\nbuffers. The primary buffer consisted of a 10 W solar panel array and a 600 F, 5.4 V supercapacitor\nbank, and the secondary buffer consisted of a 3.7 V 6 Ah lithium-ion battery pack. The primary buffer\nprovided virtually limitless charge cycles with a superior power density juxtaposed with a secondary\nbuffer that provided superior energy density and volumetric versatility. The design of this rover is\npresented in this paper; it was tested under manual and autonomous modes. The rover was found\nto be capable of effectively operating solely on the primary power buffer in high to low luminous\nconditions while being able to carry out basic extravehicular activities. The rover could travel roughly\n22 km without any input power on a full charge of both buffers, and could smoothly switch between\nits own power buffers during operation, all while transmitting live first person video (FPV) and\nnetwork data. The introduction of control algorithms on the onboard microcontroller unit (MCU) was\nalso explored in both manual and autonomous configurations. The latter integrated linear regression\nto intelligently manage power and locomotion based on sensory data from photoresistors....
We concentrate onMolecular-FET as a device and present a new modular framework based onVHDL-AMS.We have implemented\ndifferent Molecular-FET models within the framework. The framework allows comparison between the models in terms of the\ncapability to calculate accurate ...
This paper presents an X-band GaN HEMT power amplifier with a third harmonic-tuned\ncircuit for a higher power density per area and a higher power-added efficiency (PAE) using a\n0.25 �¼m GaN HEMT process of WIN semiconductors, Inc. The optimum load impedances at\nthe fundamental and third harmonic frequencies are extracted from load-pull simulations at the\ntransistorâ��s extrinsic plane, including the drain-source capacitance and the series drain inductance.\nThe third harmonic-tuned circuit is effectively integrated with the output matching circuit at the\nfundamental frequency, without complicating the whole output matching circuit. The input matching\ncircuit uses a lossy matching scheme, which allows a good return loss and a simple LC low-pass\ncircuit configuration. The fabricated power amplifier monolithic microwave integrated circuit (MMIC)\noccupies an area of 13.26 mm2, and shows a linear gain of 20 dB or more, a saturated output power of\n43.2~44.7 dBm, and a PAE of 35~37% at 8.5 to 10.5 GHz....
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