Tower Top Amplifier (TTA)
A TTA places a low-noise preselector and low-noise amplifier (LNA) at the tower top, close to the receive antenna. This location minimizes feeder loss and reduces the overall receive noise figure—delivering stronger uplink “talk-back,” wider coverage, and more reliable site access in LMR/PMR systems. High-quality filtering and strong linearity help prevent overload and intermodulation.
Sinclair advantage: Sinclair TTA systems are delivered as a matched package with the TTA and receiver multicoupler/controller together. This integrated approach optimizes end-to-end performance, simplifies integration, and ensures a balanced site design.
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Sinclair advantage: Sinclair TTA systems are delivered as a matched package with the TTA and receiver multicoupler/controller together. This integrated approach optimizes end-to-end performance, simplifies integration, and ensures a balanced site design.
混合耦合器
混合耦合器用于射频组合、采样和功率分配应用。混合耦合器是将两个或多个紧密间隔的通道组合在一起的一种方式。使用不平衡混合耦合器可以平衡每个中继器通道的插入损耗，从而提供更高效的系统。它们也常用于 DAS 系统中，以在几分贝内正确平衡分配系统的每个支路。它们还可以配置为对输出功率电平进行采样并用作信号采样器。
