Artificial magnetic conductors based on capacitive gratings

Kazantsev, Yu. N.; Apletalin, V. N.

doi:10.1134/s1064226907040031

Cited by 15 publications

(2 citation statements)

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“…In order to reduce the SAR values, we have designed and used a capacitive grating AMC structure [9]. Figures 1 and 2 show the capacitive grating AMC structure with double layers and its equivalent transmission line, respectively.…”

Section: Design Of Amc Structure and Pifamentioning

confidence: 99%

“…Impedance ( 11 ) between the second conductive layer and the conductive ground layer can be expressed as (2). Therefore, the total impedance ( 22 ) can be obtained from (3) [9]: where and 1 are the permittivity of the material placed between the gratings and the layer located between the pair of gratings and the ground plane, respectively. The dimensions of , , , and are shown in Figure 1.…”

Section: Design Of Amc Structure and Pifamentioning

confidence: 99%

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SAR Reduction Using Integration of PIFA and AMC Structure for Pentaband Mobile Terminals

Lee

2017

International Journal of Antennas and Propagation

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In this paper, a capacitive grating artificial magnetic conductor (AMC) is presented to reduce the specific absorption rate (SAR) in pentaband mobile terminals. The AMC structure is implemented using a dielectric film with the printed arrays of the metal strips placed at the top and the bottom of the dielectric. It is difficult to design the AMC structure to operate at low (824~960 MHz) and high bands (1710~2170 MHz) simultaneously, because of the limited space available for the antenna. Hence, we have designed the capacitive grating AMC to operate at a high band. Then, we attached a PIFA to the AMC structure to cover low and high bands. As the AMC structure is operated as a perfect electric conductor (PEC) in low band, the radiating branches of the PIFA for the low and high bands should be located on the non-AMC and the AMC structures, respectively. Even though the AMC structure is operated at a high band, the effect against the head could be reduced in the pentaband due to the spreading effect of the electromagnetic (EM) field at lower bands. From measured results, the 1 g SAR in the case of the AMC antenna is significantly lower than that in the case where only the PIFA is present in the pentaband.

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Section: Design Of Amc Structure and Pifamentioning

confidence: 99%

Section: Design Of Amc Structure and Pifamentioning

confidence: 99%