Title :
Measurement of loss in loop antennas caused by coupling to adjacent lossy components
Author_Institution :
Philips Res. Lab., Redhill, UK
fDate :
12/10/1998 12:00:00 AM
Abstract :
Radio pagers commonly use resonant loop antennas but the strong magnetic field couples to components within the case reducing performance. The loss can be minimised by careful adjustment of the component layout and the author shows how impedance measurements may be used for the purpose. Impedance measurements of the antenna offer a very sensitive, reliable and convenient alternative to transmission measurements for optimising the circuit layout
Keywords :
antenna testing; equivalent circuits; loop antennas; loss measurement; paging communication; adjacent lossy components; circuit layout optimisation; component layout; coupling; impedance measurements; loss measurement; magnetic field; radio pagers; resonant loop antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981691
