TY - JOUR
T1 - Analysis, simulation and measurements of CBS antennas loaded with non-uniformly biased ferrite material
AU - Kononov, Victor G.
AU - Balanis, Constantine
AU - Birtcher, Craig R.
N1 - Funding Information:
Manuscript received April 04, 2011; revised July 28, 2011; accepted September 19, 2011. Date of publication January 31, 2012; date of current version April 06, 2012. This work was supported by AFRL/RYDX (Electronics Exploration Branch), Wright-Patterson Air Force Base, Dayton, OH.
PY - 2012/4
Y1 - 2012/4
N2 - When ferrite materials are used in the design of the CBS antennas, they are usually magnetized by the applied magnetic field produced by an electromagnet or permanent magnets. In modeling of such antennas, it is common practice to ignore the actual distribution of the applied field and assume it is uniform. We demonstrate that such an assumption leads to inaccurate results when the applied field is severely non-uniform. In contrast to the previous formulations, a formulation presented here leads to accurate modeling and simulated results compare very well with measurement for both uniform and non-uniform field distributions. The utility of the proposed approach is especially evident for the case when the applied magnetic field is severely non-uniform.
AB - When ferrite materials are used in the design of the CBS antennas, they are usually magnetized by the applied magnetic field produced by an electromagnet or permanent magnets. In modeling of such antennas, it is common practice to ignore the actual distribution of the applied field and assume it is uniform. We demonstrate that such an assumption leads to inaccurate results when the applied field is severely non-uniform. In contrast to the previous formulations, a formulation presented here leads to accurate modeling and simulated results compare very well with measurement for both uniform and non-uniform field distributions. The utility of the proposed approach is especially evident for the case when the applied magnetic field is severely non-uniform.
KW - CBS antenna
KW - Cavity-backed antenna
KW - ferrite-loaded antenna
KW - non-linear magnetostatic problem
KW - non-uniform applied field
KW - non-uniform biasing field
UR - http://www.scopus.com/inward/record.url?scp=84859786892&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859786892&partnerID=8YFLogxK
U2 - 10.1109/TAP.2012.2186245
DO - 10.1109/TAP.2012.2186245
M3 - Article
AN - SCOPUS:84859786892
SN - 0018-926X
VL - 60
SP - 1717
EP - 1726
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 4
M1 - 6142015
ER -