Papers by Keyword: SDR

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Authors: Gernot Gruber, Markus Koch, Gregor Pobegen, Michael Nelhiebel, Peter Hadley
Abstract: Only a few methods exist to observe, identify, and localize defects in SiC devices. These defects are a major limit for device performance and reliability. Presented is an improved experimental setup to investigate deep level defects using electrically detected magnetic resonance (EDMR). The method applied in this study exploits the simultaneous in-situ electron spin resonance (ESR) measurement of a standard sample (DPPH) to calibrate the magnetic field. The functionality is shown by comparing the data of an ion implanted SiC diode to results from a recent study . The in-situ B-field calibration is found to increase the accuracy of EDMR measurements by a factor of 2.5.
Authors: Yun Long Yang, You Rong Lu, Qian Cai, Ying Yong Lai
Abstract: Software Defined Radio (SDR) platform resource model is the description and organization of the SDR platform resource. Its the foundation of the SDR platform resource management. Through these years, the Software Communication Architecture (SCA) has becoming the most famous specification for SDR, which standardizes the description for the SDR platform resource. Aiming at the shortages of the resource model in SCA, this paper discusses a SDR platform resource model, proposes a transfer port model and a connection model, designs a nested data model for the SDR platform resource, and a plane graph model which is easy to analyze and process.
Authors: Corey J. Cochrane, Patrick M. Lenahan, Aivars J. Lelis
Abstract: We have identified a magnetic resonance spectrum associated with minority carrier lifetime killing defects in device quality 4H SiC.
Authors: Liu Yang, Guo Xin Zheng, Chao Pan, Zhao Pu Chai
Abstract: Very minimum chirp keying (VMCK) as a novel high bandwidth efficiency modulation scheme is implemented on small form factor (SFF) software-defined radio (SDR). The VMCK transmission system model is elaborated based on Simulink within Matlab. Also, the final demodulation data stream at the output of the VMCK transmission system shows good performance in simulation. The transmitter and the receiver are designed on the SDR platform. The VMCK baseband signals with 2.5MHz are transmitted from Matlab workspace by ROM block, and then the VMCK signals are ratio frequency (RF) modulated with 432MHz. In addition, the RF receiving intermediate frequency (IF) signals with 30MHz on the SDR platform. The VMCK transmission model is easy to implement and has strong properties to resist synchronization error.
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