Title :
Wideband Antenna for Underground Soil Scout Transmission
Author :
Tiusanen, M. Johannes
Author_Institution :
Dept. of Agrotechnology, Helsinki Univ.
Abstract :
The underground soil scout system introduces a need for a small-size antenna capable of adequate radiation efficiency in soils of different moisture contents at the frequency 0.869 GHz. Such an underground antenna is created for the first time. The high permittivity of soil is utilized to downsize the instrument. A prototype design of an underground single-ended elliptical monopole antenna (USEMA) is presented and the performance measured in different soil moisture contents in a soil container. The suggested antenna has good radiation efficiency in a wide soil moisture range
Keywords :
UHF antennas; broadband antennas; moisture; monopole antennas; permittivity; soil; 0.869 GHz; moisture contents; permittivity; radiation efficiency; small-size antenna; soil container; underground single-ended elliptical monopole antenna; underground soil scout transmission; wideband antenna; Antenna measurements; Broadband antennas; Frequency; Instruments; Moisture measurement; Permittivity measurement; Prototypes; Soil measurements; Soil moisture; Transmitting antennas; Microstrip antennas; soil; telemetry;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2006.887549
