搜索结果: 1-9 共查到“电子技术 L and X Band”相关记录9条 . 查询时间(0.109 秒)
An Electronically Reconfigurable Three Band Low-Noise Amplifier in 0.5 μm GaAs pHEMT Technology
RFIC MMIC LNA Reconfigurable IC
2014/12/8
State-of-the-art RF front-end circuits are typically designed to operate at a single frequency. With an increasing number of available wireless standards, personal mobile communication devices require...
Adaptive hysteresis band control for constant switching frequency in DTC induction machine drives
Constant switching frequency direct torque control induction machinedrive torque ripple
2010/10/12
It is fairly well known that direct torque control (DTC) exhibits fast dynamic torque response, a property that originates in the fact that torque and flux is directly controlled by instantaneous spac...
Dual-Band Split-Ring Antenna Design for WLAN Applications
Split-ring microstrip antenna dual-band
2009/7/28
A dual-band microstrip antenna based on split-ring elements is introduced for WLAN (2.4/5.2 GHz) applications. The proposed split-ring antenna (SRA) has a compact novel design which provides about 2% ...
The Novel Microwave Stop-Band Filter
The stop-band filter the new band-rejection element the centre conductor
2010/12/6
The stop-band filter with the new band-rejection element is proposed. The element is a coaxial waveguide with the slot in the centre conductor. In the frame of this research, the numerical and experim...
Multi Band Frequency Synthesizer Based on ISPD PLL with Adapted LC Tuned VCO
GSM/DCS/DECT/UMTS/WiMax ISPD PLL Multi-Band
2010/2/2
The 4G front-end transceiver needs a high
performance which can be obtained mainly with an optimal
architecture and a multi-band Local Oscillator. In this study, we
proposed and presented a new arc...
n-GaAs Band-Edge Repositioning by Modification with Metalloporphyrin/Polysiloxane Matrices
Band-edge positions Polysiloxane Metalloporphyrin Modification n-GaAs Photoelectrochemistry
2010/12/7
Tetra(-4-pyridyl)porphyrinatomanganese(III)sulfate, MnP, (in the forms of MnIII and MnII mixture), was embedded into a polysiloxane polymer matrix and attached to the surfaces of n -GaAs wafers. The n...
Dependence on the Partial Pressure of Oxygen on the Shift in the Energy Band-gap of CdO Thin Films in the Visible Region
CdO thin films Shift in the energy band-gap Partial pressure of oxygen
2010/12/8
In this paper, the dependence on the partial pressure of oxygen of the shift in the energy band-gap of CdO thin films for the visible region is investigated from the theoretical point of view on an ex...
The Application of New Du Pont/USA/Copper Composition for Manufacturing of Thick-Film Microwave Low Loss Resonators on L and X Band
New Du Pont/USA/Copper Composition Thick-Film Microwave Low Loss Resonators L and X Band
2010/12/28
The applicability of the various copper compositions to the production of thick-film microwave devices has been examined. The results of this work are presented in this paper. The paper presents crite...
Integrated Monolithic Crystal Filter for Citizen Band Transceivers
Integrated Monolithic Crystal Filter Citizen Band Transceivers
2011/1/5
This paper will describe a SSB 10.7 MHz IF filter for CB band transceivers employing an integrated capacitor circuit and four dual mode Monolithic Crystal Filters (MCFs) of AT cut Quartz. With a narro...