Title :
Study and design of a capacitively coupled polymeric internal antenna
Author :
Shams, Khan M Z ; Ali, Mohammod
Author_Institution :
Dept. of Electr. Eng., Univ. of South Carolina, Columbia, SC, USA
fDate :
3/1/2005 12:00:00 AM
Abstract :
A capacitively coupled polymeric internal antenna is introduced for Bluetooth or GPS applications. Such an antenna can be easily fabricated on a flexible film substrate and attached to the inside surface of the plastic housing of a portable wireless device, such as a PDA. The proposed antenna saves critical space on the printed circuit board (PCB) and eliminates the need for a vertical contact feed. Thus manufacturing is also simplified and cost is reduced. Practical examples of utilizing such a concept for Bluetooth (2.45 GHz) and GPS (1.575 GHz) applications are provided. The antenna system requires a small coupling plate (as small as 4 by 4 mm2) that can be easily surface mounted on a PCB. The solution proposed provides wideband operation satisfying Bluetooth functionality with good radiation pattern and gain.
Keywords :
Bluetooth; Global Positioning System; UHF antennas; antenna radiation patterns; microstrip antennas; satellite antennas; 1.575 GHz; 2.45 GHz; Bluetooth; GPS applications; Global Positioning System; PCB; antenna radiation pattern; capacitively coupled polymeric internal antenna; flexible film substrate; portable wireless device; printed circuit board; Antenna feeds; Bluetooth; Costs; Coupling circuits; Flexible printed circuits; Global Positioning System; Manufacturing; Plastic films; Polymers; Substrates; Antenna; capacitively-coupled; internal; polymeric; wireless;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2004.842650