Research Article
A Small Ku-Band Polarization Tracking Active Phased Array for Mobile Satellite Communications
Table 2
The measured data at 12.5 GHz for the developed small phased array prototype.
| | Desired scan angle (deg) | 0° | 20° | 40° | 50° | | H | V | D | H | V | D | H | V | D | H | V | D |
| | Peak gain (dBi) | | | | | | | | | | | | | | Simulated | 18.7 | 18.7 | 18.7 | 18.4 | 18.5 | 18.5 | 17.7 | 17.9 | 17.9 | 16.9 | 17.5 | 17.3 | | Measured | 18.3 | 18.5 | 18.2 | 17.9 | 17.7 | 18.0 | 17.2 | 17.4 | 17.5 | 16.1 | 16.3 | 16.2 | | Aperture efficiency (%) | 87 | 91 | 85 | 79 | 76 | 81 | 68 | 71 | 72 | 52 | 55 | 53 | | SLL (dB) | −13.3 | −11.8 | −11.3 | −12.3 | −13.3 | −10.6 | −11.3 | −8.4 | −6.0 | −7.9 | −8.8 | −7.4 | | Half-power beam width (deg) | 22.2° | 21.3° | 21.6° | 21.9° | 23.7 | 22.2° | 24.3° | 25.2° | 24.3° | 26.4° | 24.9° | 25.5° | | Beam pointing error (deg) | 0 | −1.2° | 3° | −1.4° | 2.2° | −1.4° | −3.4° | −3.4° | −1.6° | −4.1° | −5.9° | 1.3° |
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