Antenna Coupling Effects in Handheld and Mobile Applications: Antennen-Kopplungseffekte in drahtlo- sen Hand- und Mobilgeräten

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Antenna Coupling Effects in Handheld and Mobile Applications: Antennen-Kopplungseffekte in drahtlo- sen Hand- und Mobilgeräten by Mario Rößler.pdf

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Descriptions : This work analyzes antenna coupling effects in small wireless handheld and mobile devices Further it provides suggestions how to minimize them Modern communication devices have to support several standards while the total system and PCB size needs to be decreased This results in rising mutual coupling Demands for improved receiver sensitivity and limited transmit power aggravate the requirements on separation of the systems Part resents information about standards wave propagation on PCBs fundamentals of D electromagnetic FEM simulations and S parameter measurement basics Part deals with the results from the simulation of simplied mobile phone boards Part resents the measurement results of selected congurations It is shown that the optimization of the antenna positions provides an option to relax demands to the needed lters In addition modications to the PCB are introduced which signicantly improve decoupling between the antennas










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