期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 10, 期 -, 页码 63-66出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2011.2107493
关键词
Antenna miniaturization; cavity model; losses; magneto-dielectrics; radiation efficiency
资金
- French National Agency of Research
Closed-form formulas for calculating the radiation efficiency and bandwidth of patch antennas over lossy magneto-dielectric materials are proposed by using the cavity model. These expressions agree well with simulations. It is well known that the bandwidth of microstrip antennas is enhanced when the dielectric substrate is replaced by a magnetic one. Here, we confirm more generally that not only the bandwidth, but also the radiation efficiency, can be improved when the permeability (mu(r)) is greater than the permittivity (epsilon(r)).
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