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A 36–40 GHz full 360° ultra-low phase error passive phase shifter with a novel phase compensation technique is presented in this paper. The proposed phase shifter consists of a four-way quadrature power divider as a vector generator, vector selector and two digital controlled artificial dielectric (DiCAD) phase shifter cells to achieve 4-bit (22.5° phase resolution) and full 360° synthesizing. DiCAD...
User-centric ultra-dense networking (UUDN) had been proposed for allowing ubiquitous services for end-users on the move based on well-deployed access points. In this paper, we studied a possible scenario of well-deployed user equipment/access point device (UAD) for UUDN due to its auto-deployment and crowd-oriented nature. Considering high PAPR signal of OFDM families for 5G waveform candidates, the...
Influences of energy band lineup at the tunneling junction on the performance of GaAsxSb1−x/InyGa1−yAs heterojunction tunneling field-effect transistors (HTFETs) have been investigated using TCAD simulations. The results show that devices with low off-current, high on-current, and low subthreshold swing over a wide current range can be achieved simultaneously based on GaAs0.51Sb0.49/InxGa1−xAs/In0.53...
Target tracking is an important application in Wireless Sensor Networks or Internet of Things. In most applications, a large number of inexpensive and stationary sensor nodes are deployed randomly in a field to cooperatively monitor the intrusive targets that are able to move around the field. To save energy depletion, sensor nodes are in sleep mode in most of the time while they should be waked up...
Recent developments in system-on-chip (SoC) applications lead to an increasing attention on biomedical implantable IC designs. Being implantable, a CMOS low dropout regulator (LDR) with high power supply rejection (PSR) must have an on-chip output capacitor. To achieve a high PSR over a wide frequency range, a cascode technique with power NMOS and power PMOS is utilized to increase the output impedance...
Real-time strategy (RTS) game is a very popular genre of computer games. In RTS games, the units need to navigate the environment, surround the enemy, and attack targets. Pattern formation of the units plays an important role in the tactics of RTS games. In this paper, we propose generating the pattern formation based on potential field, which is widely used in collision avoidance. The proposed method...
For the ultra fine pitch applications, solder paste printing acts as one of the most critical step in the SMT assembly process. A review of literature indicates that solder paste printing contributes around 60% of the total process defects. One of the key factors for the performance of solder paste deposition is stencil fabrication quality. Other important factors include stencil aperture design,...
A two degree-of-freedom motor system constructed with two sets of piezoelectric actuators mutually perpendicular around a spherical surface is designed. Each set is employed with a series of piezoelectric actuators driven by voltage with appropriate phase difference on the neighboring actuators so that traveling wave is generated. Such a system can be used for robot (eyes or joints), flight guide...
In this article, speed control for a platform driven by a wedge-type piezoelectric motor is investigated. Such a motion control system is subject to disturbance like friction, preload and operating temperature change, so that a predictive linear relation between the applied input voltage and the output platform velocity is difficult to keep. Especially, operating temperature change is an essential...
In the development of new generation EIT systems, the design of a steady current generator with broad bandwidth is an important consideration. In this paper, the current generator is constructed by enhanced Howland circuit with high-speed operational amplifier. The electronic models of current generator built on Orcad?? PSpice 9.2 software are simulated to observe the output current stability at multi-frequencies...
In the development of new generation EIT systems, the design of a steady current generator with broad bandwidth is an important consideration. In this paper, the current generator is constructed by enhanced Rowland circuit with high-speed operational amplifier. The electronic models of current generator built on Oreadreg PSpice 9.2 software are simulated to observe the output current stability at...
The purpose of this study is to characterize the cognitive functions of schizophrenic patients using different auditory and visual event-related potentials (ERPs) based on Wisconsin card sorting test (WCST). From the experimental results, it is indicated that there is a slowness of automatic cognitive processing and controlled cognitive processing during WCST in comparison with ERPs for schizophrenic...
In the development of new generation EIT systems, the design of a steady current generator with broad bandwidth is an important consideration. In this paper, the current generator is constructed by enhanced Rowland circuit with high-speed operational amplifier. The electronic models of current generator built on Oreadreg PSpice 9.2 software are simulated to observe the output current stability at...
The purpose of this study is to characterize the cognitive functions of schizophrenic patients using different auditory and visual event-related potentials (ERPs) based on Wisconsin card sorting test (WCST). From the experimental results, it is indicated that there is a slowness of automatic cognitive processing and controlled cognitive processing during WCST in comparison with ERPs for schizophrenic...
The purpose of this study is to characterize the cognitive functions of schizophrenic patients using different auditory and visual event-related potentials (ERPs) based on Wisconsin Card Sorting Test (WCST). From the experimental results, it is indicated that there is a slowness of automatic cognitive processing and controlled cognitive processing during WCST in comparison with ERPs for schizophrenic...
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