Main Product Introduction
The 1280-1300MHz 8-Way Power Splitter is a specialized RF component engineered for high-accuracy signal distribution within the L-band spectrum. Unlike general-purpose splitters, this narrowband model is specifically tuned to provide peak performance between 1280MHz and 1300MHz. This results in significantly better isolation (typically ≥25 dB) and return loss, which are critical for sensitive radar and navigation equipment. The internal Wilkinson microstrip circuit is balanced to ensure that all 8 outputs receive an identical signal in both strength and phase. Housed in a precision CNC-machined aluminum enclosure, it is designed to withstand the rigors of aerospace and defense environments while maintaining stable electrical characteristics under continuous 50W loads.
Application Scenarios
- L-Band Radar Systems: Feeding 8-element antenna arrays or dividing local oscillator signals for multi-channel receivers.
- Aviation Navigation (DME/SSR): Distributing signals in secondary surveillance radar and distance measuring equipment.
- 23cm Amateur Radio: High-efficiency power division for high-gain stacking of EME (Earth-Moon-Earth) or weak-signal antenna arrays.
- Satellite Telemetry: Reliable signal splitting for ground station tracking and control systems operating in the 1.3GHz range.
Electrical Specifications
| Parameters | Specifications |
|---|---|
| Model No. | MPS-1280-08-NF (Precision Narrowband) |
| Frequency Range | 1280 – 1300 MHz |
| Output Port Number | 8-Way |
| Insertion Loss | ≤ 0.4 dB (Excluding 9.0 dB theoretical loss) |
| Amplitude Balance | ± 0.2 dB (Ultra-Precise) |
| Phase Balance | ± 3° (High Synchronicity) |
| Isolation | ≥ 20 dB |
| VSWR (Input/Output) | Typ. 1.25 / 1.20 |
| Power Rating | 50W (Splitter) | 3W (Combiner) |
| Connector Type | N Female |
| IP Grade | IP65 (Weatherproof) |
| Surface Finish | Sandblasting Natural Conductive Oxide |
| Operating Temperature | -40℃ to +70℃ |
FAQ
- What is the total signal loss per port for this 8-way split?
- The theoretical split loss is 9.0 dB. Due to the high efficiency of the narrowband tuning, the insertion loss is extremely low (typically ≤0.4 dB), resulting in a total loss of approximately 9.4 dB per port.
- Can I use this for 1.2GHz or 1.4GHz signals?
- This unit is specifically optimized for 1280-1300MHz. While it may function slightly outside this range, the VSWR and isolation will degrade quickly. For wider coverage, we recommend our broadband 1-2GHz or 600-6000MHz series.
- Why is phase matching important for an 8-way splitter?
- In antenna arrays and radar systems, if the signals reach the 8 antennas at different phases, the beam pattern will be distorted. This splitter ensures tight phase balance (typically within ±5°) to maintain the accuracy of the antenna’s radiation pattern.
- Does this splitter allow DC-pass?
- Standard Wilkinson splitters are often AC-coupled due to the internal isolation resistors. If your application requires DC power to pass to a remote LNA or antenna, please contact us for a customized DC-pass version.
- How should I treat unused output ports?
- MANDATORY: To maintain the 50-ohm impedance and high port isolation, all unused ports must be terminated with a 50-ohm N-type dummy load. For a 50W input, ensure the loads can handle the proportional power (approx. 6.25W per port).
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Power Splitter
