Title :
Two-Arm Archimedean Spiral with Filter-Based Reactive Loading
Author :
Zhang, Z. ; Bernhard, J.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Urbana-Champaign Illinois Univ., Urbana, IL
Abstract :
A new technique to increase the operating bandwidth of a two-arm Archimedean spiral antenna is presented in this paper. Unlike other conventional solutions, including absorbent cavity backing and resistive loading, this method incorporates the concept of low-pass filtering with the two-wire transmission line behavior of the spiral antenna. The reactive loading from the integrated low-pass filter design improves the impedance match at lower frequencies providing a greater bandwidth than the basic spiral design
Keywords :
impedance matching; low-pass filters; spiral antennas; transmission line theory; filter-based reactive loading; impedance match; low-pass filtering; two-arm Archimedean spiral antenna; two-wire transmission line behavior; Arm; Band pass filters; Bandwidth; Broadband antennas; Filtering; Frequency; Impedance; Low pass filters; Matched filters; Spirals;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711419
