与前向放大器相比,RF-Lambda双向放大器的增益比前向放大器小,因为上行波(反向)通常是低频信号,低频波对电缆的衰减较小,因此与前向所需增益相比,下行电视信道的射频信号被F座标记为"RF IN"引入放大器。 射频信号是耦合C1一个高频,高压片式电容,前向放大器模块由双向滤波器(高频通道),前向手动衰减器,前向手动均衡器和前向频率响应校正器进入。放大后的射频信号经过"双向滤波器"(高频通道),桥式支路/分配器,高频高压瓷片电容C19,将放大器从F座"RF OUT"引至下一级或用户。桥式支路/分配器分离出的另一射频信号可根据用户需要,通过C20,F座"RFBR"制成各种支路的桥式信号送出放大器。也可以衰减20 dB作为测试信号,为维护人员提供不间断的测试,这个测试信号电平加上20 dB就是放大器RF OUT"端口的实际输出电平。上行回传信号由F 座RF OUT引入,经过双向滤波器(低频通道),反向频率响应校正器,反向手动衰减器,反向固定均衡器三个低通滤波器,进入反向放大模块。放大后的射频信号为C1,经双向滤波器(低频通道),高频高压陶瓷片电容,放大器终从F座"RFIN"引出,到上层放大器或直接到光节点。 深圳市立维创展科技是RF-LAMBDA的经销商,RF-LAMBDA的产品包括:无源控制模块,有源控制模块,宽带功率放大器,窄带PA和驱动放大器,产品生产线均根据美国*设计标准与生产制造,现已广泛运用于航天、航空、*、卫星通讯、雷达等高端工程项目。 Part Number RX Frequency Range (MHz) TX Frequency Range (MHz) RX Gain(dB) TX Gain(dB) P1db_RX P1db_TX ACPR(dBc) VSWR PDF RFBA330350MA 0.330~0.350 0.330~0.350 18 43 23 38 ≤-35@±3.84MHz 1.8 N/A RFBA330350MB 0.330~0.350 0.330~0.350 18 43 23 38 ≤-35@±3.84MHz 1.8 N/A RFBA340390MA 0.340~0.390 0.340~0.390 15 25 10.5 48 ≤-40@±3.84MHz 1.5 N/A RFBA370420MA 0.370~0.420 0.370~0.420 15 26 23 45 ≤-40@±3.84MHz 1.35 N/A RFBA370420MB 0.370~0.420 0.370~0.420 15 26 23 45 ≤-40@±3.84MHz 1.35 N/A RFBA390430MA 0.390~0.430 0.390~0.430 15 25 10.5 48 ≤-40@±3.84MHz 1.5 N/A RFBA400470MA 0.400~0.470 0.400~0.470 15 35 10 38 ≤-32@±3.84MHz 1.5 N/A RFBA825880M02 0.825~0.835 0.835~0.880 16 34 10.5 38 ≤-32@±3.84MHz 1.9 N/A RFBA890960MA 0.890~0.915 0.935~0.960 15 43 25 48.5 ≤-35@±3.84MHz 1.5 N/A RFBA900930MB 0.900~0.930 0.900~0.930 17 13 23 38 ≤-35@±3.84MHz 1.8 N/A RFBA900930MA 0.902~0.928 0.902~0.928 7 7 20 38 ≤-32@±3.84MHz 1.5 N/A RFBA012014G10L 1.200~1.440 1.200~1.440 25 30 10.5 45 ≤-37@±3.84MHz 1.5 N/A RFBA017018G10 1.710~1.785 1.805~1.880 10 41 25 45 ≤-35@±5.00MHz 1.5 N/A RFBA017018G20 1.710~1.785 1.805~1.880 10 41 25 48 ≤-35@±5.00MHz 1.5 N/A RFBAFDB03CX 1.710~1.783 1.807~1.878 20 20 15.5 45 ≤-30@±3.84MHz 1.5 N/A RFBATDB39CX 1.880~1.920 1.880~1.920 20 20 15.5 47 ≤-40@±3.84MHz 1.5 N/A RFBA019021G01 1.920~1.980 2.110~2.170 14 30 25 35 ≤-35@±5.00MHz 1.5 N/A RFBA019021G20 1.920~1.980 2.110~2.170 9 43 25 48 ≤-35@±5.00MHz 1.5 N/A RFBAFDB01CX 1.920~1.980 2.110~2.170 20 20 15.5 45 ≤-30@±3.84MHz 1.5 N/A RFBA020020G10 2.010~2.025 2.010~2.025 9 41 25 46 ≤-35@±4.20MHz 1.5 N/A RFBATDB40CX 2.305~2.385 2.305~2.385 20 20 15.5 47 ≤-40@±3.84MHz 1.5 N/A RFBA025026G02 2.555~2.655 2.555~2.655 3 9 15.5 38 ≤-40@±3.84MHz 1.5 N/A RFBATDB41CX 2.555~2.655 2.555~2.655 20 20 15.5 47 ≤-40@±3.84MHz 1.5 N/A