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A broadband and compact antenna with low SAR value and six-band operations for the use in mobile phone has been studied. The antenna formed by PIFA (planar inverted-F antennas) achieves an impedance bandwidth (|S11|<−6 dB) of 370 MHz (770∼1140 MHz) in the lower resonant modes for the GSM850/900 operations (824∼960 MHz), and 890 MHz (1690∼2580 MHz) in the higher resonant modes for the GSM1800/GSM1900/UMTS/Bluetooth...
Using six- and eight-band k⋅p models—with parameters calibrated against the bulk band structure obtained using non-local empirical pseudopotentials—we have employed a new hybrid self-consistent method to calculate the valence subband structure in p-channel inversion layers of InAs, InSb, GaAs, In0.53Ga0.47As, and GaSb. This method involves two separate stages: first, density-of-states (DOS) of the...
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