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Radio frequency identification (RFID) uses wireless local area network technology, which limits its scope of application. And the data security isn't well protected because of the limited hardware resource of cheap electronic tag. In this paper, we realize the combination of TCP/IP and RFID technology by the Ethernet interface of SAMSysMP9320 reader/writer. This is accomplished by assigning IP address...
This work demonstrates a new integrated inverse class E amplifier circuit, employing a pHEMT switching device and fully integrated output network for pulse shaping. The circuit is particularly suitable for full integration, since it does not need any RF choke for biasing, and no DC blocking capacitor is needed between the switch and the output network parallel resonance circuit. The back plate capacitances...
This paper presents a wide intermediate-frequency (IF) bandwidth down-conversion double-balanced Gilbert-cell mixer design in a 0.13-μm CMOS process. The load stage of the mixer is implemented by an LC tank with switched capacitors to complete three selectable sub-bands to cover the desired wide IF band. Both the RF and LO ports are integrated with Marchand baluns for single-phase input consideration...
In recent years, research and development work have been done on surgical robots and navigation systems. Although these systems have potential to realize minimally invasive and precise surgery, it is considerably difficult to control these robots accurately because organ sometimes shows unanticipated behavior during operation. Therefore, the robot control system which can respond to the various change...
This work discusses a link between two previously reported ideas in high-speed digital-to-analog converter (DAC) design: linear approximation with analog interpolation techniques and an RF DAC concept where oscillatory pulses are used to combine a DAC with an up-conversion mixer. An architecture is proposed where we utilize analog interpolation techniques, but using sinusoidal rather than linear interpolation...
Silicon-controlled rectifier (SCR) has been reported with the good electrostatic discharge (ESD) robustness under the lower parasitic capacitance among ESD devices in CMOS technology. To correctly predict the performances of SCR-based ESD-protected RF circuit, it is essential for RF circuit design with accurate model of SCR device. The small-signal model of SCR in RF frequency band is proposed in...
A low-voltage and high-linearity downconverter RFIC design using TSMC 0.18 μm CMOS foundry for WiMAX applications is presented in this paper. The LC resonator is used to block DC and RF signals for low supply voltage and the multiple-gated CMOS is adopted to eliminate third-order nonlinear term for high linearity. The crucial simulated results of WiMAX downconverter include that a conversion gain...
We have proposed a hollow tube type micropump which integrates a liquid flow driving part such as a PZT piezoelectric material and a tube part. And the flow function demonstrated by the hollow tube type micropump was evaluated and it is confirmed that the flow velocities by the pump were increased and decreased. We examined the improvement of the pump. Here, it is effective to give a large vibration...
In this study, junctionless technology employed for fabricating pseudo tri-gate vertical (PTGV) MOSFETs is proposed and the RF/analog performance is also investigated and demonstrated. According to simulation results, the excellent performances such as high transconductance (gm), high cut-off frequency (fτ), and high transconductance generation factor (gm/Id) arc achieved. The numerical results also...
Japan is facing two problems of aging population and declining birth rate, which lead to a scenario that the elderly are at home alone and no one takes care of them most of time. Therefore, there is need of developing the elderly care supporting systems. This paper presents a system for supporting the elderly at home in medicine management, medicine taking monitoring, and medicine taking assistance...
In this study, we propose a novel bulkSi-based device called dual-channel body-tied (DCBT) MOSFET using the self-aligned process without any extra masks. It reveals that our proposed DCBT FET has excellent S.S., decreased Isd,leak, lower Rsd, reduced Jg,limit, smaller lattice temperature, and higher thermal stability when compared with its DC counterpart. And, for the first time, we will investigate...
In this paper, a new circuit topology to realize a stacked self-oscillating LNA-Mixer is proposed. The basic idea has been to recognize that in a high-performance down-conversion mixer its RF input-stage gain, linearity, and noise tradeoff is often improved by feeding it with a bypass current source. This current source could be isolated with an inductor so as to allow free implementation of the oscillator...
A novel SOI LDMOS with Double Trench Gate (DTG) is proposed. The DTG SOI LDMOS is obtained by introducing an additional trench gate between P-well region and N-drift region, which can form one more n-channel in on-state. The parameters of DTG SOI LDMOS were optimized to some extend through 2D device simulations and some main electronic properties were obtained through 2D device simulation with Silvaco...
An electrical model of the 104 MHz radio frequency quadrupole (RFQ) accelerator at Peking University is introduced for RF design, based on which every crucial geometrical parameter is swept and selected carefully to improve the RF properties of the RFQ such as the intrinsic quality factor and shunt impedance for reducing its power consumption. Moreover, flatness tuning of the inter-electrodes voltage...
A wireless tracking and controlling the mobile robot using video capturing feature (VCF) for unmanned applications is presented. It is a wheel-based and Radio frequency (RF wireless communicated) is used for communication between controller and the robot. The available motions of the robot are forward, backward, right, left and the combination of these movements. Besides, a camera is built in the...
Advantages of None Euclidean Relational Fuzzy C-means (NERFCM) is analysed, by which four Fuzzy C-means (FCM) clustering algorithms are compared, which includes Fuzzy C-means (FCM) and traditional Relational Fuzzy C-means (RFCM) and None Euclidean Relational Fuzzy C-means (NERFCM) and Any Relational Fuzzy C-means (ARFCM). Their common points and different limitations on usage are discussed, finally...
This paper is to explain about the picture in picture technology that is used innovatively for automated wireless home security. The present home security system needs an LCD screen that is located somewhere inside the home to view the camera video. At some point of time, consider the time when you are watching a very interesting program in the television, may be the last over of a T-20 match or the...
Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be merged with antenna arrays at the transmitter and receiver to increase the diversity gain and/or to heighten the system capacity on time-variant and frequency-selective channels, resulting in a Multiple-Input Multiple-Output (MIMO) configuration. The IEEE 802.11n standard based...
The progresses and difficulties faced in the life-detection radar signal processing are introduced in the paper. First, the progresses in signal processing are shown, including obtaining the breathing and heartbeat frequency by using self-correlation process and composing the mode vector to discriminate a life by using time-spectrum analysis and singular value decomposition. Then, the difficulties...
Inductors play an essential role in the design of RF circuits. The parasitic effects plaguing integrated planar inductors require an accurate modeling and the careful exploration of their performance trade-offs. In this paper, a multi-objective performance modeling technique of planar inductors is presented, that supports both top-down and bottom-up design of RF circuits.
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