Antenna Coupling Effects in Handheld and Mobile Applications » książka
Antenna Coupling Effects in Handheld and Mobile Applications
ISBN-13: 9783639156089 / Angielski / Miękka / 2009 / 152 str.
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 1 presents information about standards, wave propagation on PCBs, fundamentals of 3D electromagnetic FEM simulations and S-parameter measurement basics. Part 2 deals with the results from the simulation of simpli ed mobile phone boards. Part 3 presents the measurement results of selected con gurations. It is shown that the optimization of the antenna positions provides an option to relax demands to the needed lters. In addition modi cations to the PCB are introduced which signi cantly improve decoupling between the antennas."
This work analyzes antenna coupling effects in smallwireless handheld and mobile devices.Further it provides suggestions how to minimize them.Modern communication devices have to support severalstandards, while the total system and PCB size needsto be decreased. This results in rising mutualcoupling. Demands for improved receiver sensitivityand limited transmit power aggravate the requirementson separation of the systems.Part 1 presents information about standards, wavepropagation on PCBs, fundamentalsof 3D electromagnetic FEM simulations and S-parametermeasurement basics. Part 2 dealswith the results from the simulation of simplifiedmobile phone boards. Part 3 presents the measurementresults of selected configurations.It is shown that the optimization of the antennapositions provides an option to relax demands to theneeded filters. In addition modifications to the PCBare introduced which significantly improve decouplingbetween the antennas.
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