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In this paper an alternative analysis of a patch-PCB-combination (called `antenna' in this paper) for handheld devices is presented. In many publications like [2, 3] this antenna is interpreted as consisting of two resonators (PCB and patch) which are coupled through an electrical field. In the respective equivalent circuit the E-field-coupling is described by using a transformer. The aim of the work...
Some key aspects of two different concepts of configurable antennas for future mobile terminal have been addressed in this paper. It has been shown that a coupling element in combination with a configurable tuning circuit can be used to excite the chassis of the mobile terminal to act as the entire antenna in many different frequency bands. However, when both the coupling element and the tuneable...
In this paper we present part of a long term research project that aims on designing a (re-)configurable multistandard antenna element for 4G (4th Generation) mobile terminals based on LTCC (low temperature co-fired ceramic) technology. The antenna itself is a coupling element that efficiently excites the chassis of the mobile terminal to radiate as an entire antenna. Coupling is optimized by a reactive...
Tomorrows mobile terminals shall be multi-standard platforms for various kinds of wireless applications. So far, nowadays mobiles consist of a combination of different separated modules e.g. for GSM, for Bluetooth, WLAN, etc.. Along with these different modules typically separated antennas are use, such as one for GSM/UMTS and another one for Bluetooth and yet another one for FM radio. Currently the...
In this paper we present a method to optimize a tuning circuit for an electrically small antenna with regard to the total efficiency (matching and losses) of the entire system consisting of antenna and tuning network. The method aims on optimizing the throughput through the tuning network rather than optimizing only the matching to the 50 Omega transceiver module. This is especially important for...
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