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A new technique to realize a high-rate data transmission through electrically small antennas is presented. In this technique, the fundamental resonant frequency of a single-mode antenna is modulated by feeding the antenna with a switched capacitor with a switching signal controlled by baseband digital data. The antenna operates completely in the transient state and a DC power source is used to excite...
As the wireless communication devices shrink in size, transmission bandwidth becomes a challenging factor for antenna designers. For example, biomedical implants are among the most critical devices that are required to have a minimized size while transmitting high data-rate information. Particularly, devices that interact with the nervous system such as cochlear and visual prostheses must be able...
Wireless communication techniques have been broadly developed during the past decades due to their extensive applications. One required characteristic of most wireless systems is a wide transmitting bandwidth through a small-size antenna. Although there have been lots of studies on different techniques to broaden the bandwidth of the small antennas, the antenna bandwidth is strictly ruled by the fundamental...
There are many challenges involved with the implanted antenna designs including but not limited to the miniaturization of a wideband antenna and reducing the specific absorption rate, SAR, of a miniaturized antenna. Most of the proposed antennas for implanted applications are electric antennas such as planar inverted-F antenna, PIFA. By miniaturizing the size of an electric antenna the electric field...
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