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In this paper, Design of a reconfiguration frequency full metal case antenna with portable wireless terminal unit is presented in the Fig. 1. The prototype antenna in fabricated is used a copper sheet of 0.6mm thickness while occupies a volume of 13mm × 70mm × 0.6 mm, and suitable to be built-in housing of a mobile phone. A FR4 substrate with a thickness of 0.8 mm, relative permittivity of 4.4, and...
The use of capsule endoscope greatly contributes to the painless and hygiene diagnoses of the small intestine, which cannot be reached easily by traditional upper endoscopy or colonoscopy. However, most of current commercial capsule endoscopes only carry one or two cameras, which may lead to missing some interesting spots due to the limited field of view. A micro-ball endoscope with six CMOS image...
In this letter, a dual-band ring coupler based on the folded substrate-integrated waveguide (FSIW) is proposed. The artificial structure, the composite right/left-handed (CRLH) transmission lines were implemented in the FSIW by loading the interdigital capacitors in the middle metallic layer to generate a left-handed passband region below the cutoff frequency of the ordinary waveguide ...
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