DocumentCode
182748
Title
Using resistive loading to control the radiation efficiency of a spiral antenna
Author
Grady, Michael ; Weller, Thomas M.
Author_Institution
Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL, USA
fYear
2014
fDate
6-6 June 2014
Firstpage
1
Lastpage
4
Abstract
This work explores a method to manipulate the radiation efficiency of a spiral antenna, in a controlled manner, by the use of methodically placed resistive loading. Simulated and measured efficiency and reflection coefficient data are shown for various resistively loaded spiral antennas. The simulated efficiencies range from 1% to 90% within the frequency range of 0.1 to 2.5 GHz. Effective permittivity, specifically an effective substrate loss tangent, is related to the value of the resistive loading to explain the efficiency control mechanism. Efficiency decreases as the loaded resistance value decreases.
Keywords
permittivity; spiral antennas; permittivity; radiation efficiency; resistive loading; spiral antenna; substrate loss tangent; Antenna measurements; Loaded antennas; Loading; Resistors; Spirals; radiation efficiency; resistor loading; spiral antenna;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual
Conference_Location
Tampa, FL
Type
conf
DOI
10.1109/WAMICON.2014.6857804
Filename
6857804
Link To Document