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In this paper we describe a novel approach to reduce the mutual coupling in microstrip antenna arrays by using metamaterial absorber (MA). The MA is constructed with split-ring resonators to suppress the surface current propagation between two microstrip antenna elements at the resonant frequency. By inserting the MA, it has been achieved an improvement in decoupling by 10.8 dB with a center-to-center...
In order to monitor the interference in GNSS, the bearings measurement of the interference source is needed. Because the high-order cumulant (HOC) is able to suppress Gaussian nose, a music algorithm based on the Interference Bearings Measurement 4-order cumulant of circle array GNSS is put forward. The MUSIC algorithm based on HOC can be used in GNSS Interference Bearings Measurement to decrease...
CSCW/CSCD involves large amount of collaborative operations among distributed systems, data transmission reliability and integrity is important to ensure the behavioral consistency of various systems. Since it concerns with large data blocks and real time requirements in application layer, the general data reliability ensuring technology, such as RS codes, which is designed originally for bit or symbol...
The clinical applications of capsule endoscopes have been increasing consistently since the invention of a passive capsule endoscope was made. Though the capsule endoscopes are effective in detecting large lesions along human digestive tract, they cannot meet doctors' requirements of active control of the capsules to carefully examine small lesions. The poor precision of positioning system is one...
Capsule endoscopes have been proven useful to diagnose lesions along digestive tracts in recent years. However,the capsule moving through the GI tract can't be externally controlled, thus it may miss capturing important lesions. Locomotion is in urgent need for future in-vivo capsule endoscopy, and location is one of the most needed information to guide the movement of capsule inside the body. We...
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