Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 63, Issue 12, Pages 5874-5878Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2015.2480096
Keywords
Conical radiation pattern; dielectric resonator antennas (DRAs); wideband antennas
Funding
- National Basic Research Program of China [2013CB329002]
- Ministry of Science and Technology of China [2013ZX03003008-002]
- National Natural Science Foundation of China [61371012]
- Beijing Excellent Doctoral Dissertation Instructor project [20131000307]
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A wideband cylindrical dielectric resonator antenna (CDRA)-loaded with an annular column, namely the LCDRA, is proposed and analyzed. The antenna comprises two components-an inner cylindrical dielectric and a loaded concentric column dielectric. The proposed antenna is centrally fed by a coaxial probe, and has a low profile of 0.175 lambda(0) (lambda(0) is the wavelength of the center frequency). Four conical radiation pattern modes (TM01 delta, TM02 delta, TM03 delta, and TM04 delta modes) are excited and merged, providing an impedance bandwidth of 56% (3.14-5.56 GHz). A prototype of the proposed antenna is built and tested. Good agreement between the simulated and measured results, including the reflection coefficient and radiation patterns, is achieved.
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