Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 14, Issue -, Pages 791-794Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2014.2385862
Keywords
Bandwidth; dielectric resonator antenna; high permittivity; low profile
Funding
- Program for New Century Excellent Talents in University [NCET-11-0690]
- National Science and Technology Major Project of China [2014ZX03001014]
- National Natural Science Foundation of China [61372001]
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A dielectric resonator antenna of very high permittivity has been proposed. The antenna is designed based on a multilayered structure. To realize low profile and relatively large impedance bandwidth simultaneously, two separate dielectric resonators of high permittivity are placed symmetrically on top of the antenna structure. A low-permittivity dielectric substrate is inserted between the resonators and the ground. The total height of the antenna is 1.57 mm or 0.039 lambda (lambda is the wavelength at the center frequency.) An enhanced bandwidth of 10.49% has been realized. The proposed antenna has stable radiation patterns across the whole operating band. Relatively high antenna gains over 6 dBi and a low cross-polarization level of -25 dB are also achieved.
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