Research Article
A Novel Cellular Handset Design for an Enhanced Antenna Performance and a Reduced SAR in the Human Head
Table 4
Computational
results of the antenna performance parameters of both handset models at 1800 MHz in all cases.
| | Frequency | 1800 MHz | | in (dB) | Gain (dBi) | Radiation efficiency | Total efficiency | | Handset model | Model | Model | Model | Model | Model | Model | Model | Model | | no. 1 | no. 2 | no. 1 | no. 2 | no. 1 | no. 2 | no. 1 | no. 2 |
| | Handset in free-space | | | 3.9 | 3.8 | 95.3% | 95.8% | 95.2% | 95.7% | | Handset in hand only | | | 2.9 | 0.86 | 67.1% | 50.0% | 66.2% | 49.0% | | Handset in hand close to SAM
(Cheek position) | | | 0.2 | | 22.3% | 30.1% | 22% | 30.0% | | Handset in hand close to SAM (Tilt position) | | | 0.67 | 0.86 | 26.1% | 36.7% | 25.0% | 36.4% | | Handset in hand close to HR-EFH (Cheek position) | | | 1.3 | 0.2 | 25.0% | 33.4% | 24.5% | 33.1% | | Handset in hand close to HR-EFH (Tilt position) | | | 0.6 | 0.47 | 27.2% | 39.2% | 26.6% | 38.7% |
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