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To more accurately detect small polyps (ranged 5∼8mm, also called C2 stage) on the colon wall is of great significance for early diagnosis colorectal cancers. In order to achieve better detection results on small polyps in colon, both relatively global and local method were presented in the literature (or we can say single layer surface based or volume(image) based). However the colon usually consists...
A new phase measurement based on the six-port technology is introduced in this paper and compared with the conventional superheterodyne phase detector. The six-port architecture adopting zero-intermediate frequency architecture, consisting of the six-port junction, detectors, video amplifiers and other devices. It has been proven to reduce the difficulty of the system-design and have vast value for...
A C-band (5.5GHz) six-port junction is proposed. The six-port junction, composed of one power divider and three 90° hybrid couplers, is the key of the new direct digital receiver which will satisfy the mass-market wireless communication systems and radar requirements. This kind of receiver consists of a six-port junction, RF detectors which run in the square-law characteristics, video amplifiers and...
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