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关键词：
隐藏域元素占位
Full-Band Survey GNSS Antenna T440
√ Frequency 1521MHz~1608MHz/1166MHz~1278MHz
√ Gain 40±2 dBi
√ Polarization right-hand circular polarized（RHCP）
√ Axial ratio[dB] ≤3
√ ontal coverage angle 360°
隐藏域元素占位
关键词：
隐藏域元素占位
High Performance Survey Antenna S440
√ Frequency Range:1556~1623 and 1164~1288 MHz;
√ Gain：40±2 dBi;
√ Operating voltage：3.3V~12VDC;
√ Phase centre stability over a wide angular range in the vertical plane；
√ Multi-star multi-frequency zero-phase centre dielectric antenna；
√ High unit gain, wide directional map beam, low elevation angle still possible；
√ With multipath resistant choke plate for high measurement accuracy；
√ Low noise amplifier with bandpass filter.
√ Microstrip Stacking Materials and Processes
√ Supported Systems :GPS/GLONASS/Beidou/Galileo/IRNSS/QZSS/SBAS/NAVIC/OmniStar;
隐藏域元素占位