2‑8GHz 40dB Directional Coupler Supplier | Factory Prices & Custom Tuning | Keenlion
A reliable 2‑8GHz 40dB directional coupler is essential for power monitoring and signal sampling. Our directional coupler offers low insertion loss, high directivity, and 150W CW handling. Keenlion is the actual factory – so we provide samples, custom tuning, and direct pricing that keeps your costs low on every directional coupler you order.
Main Indicators
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Product Name |
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Frequency Range |
2-8GHz |
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Insertion Loss |
≤0.4dB |
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Main line VSWR |
≤1.4 |
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Branch Line VSWR |
≤1.6 |
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Directivity |
≥15dB |
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Coupling |
≤40±1dB |
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Coupling Flatness |
≤±1.3dB |
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Power |
150W(CW) / 200W(PW) |
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Port Connectors |
SMA-K (Main Line) / SMP-J (Coupler) |
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Surface Finish |
Silver Paintd |
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Operation Temperature |
-40~+60℃ |
Outline Drawing
Broadband Accuracy from 2 to 8GHz
This directional coupler covers 2‑8GHz with main‑line VSWR ≤1.4 and secondary ≤1.6. Insertion loss stays under 0.4dB, so your primary signal barely feels it. Coupling is 40±1dB with flatness within ±1.3dB – meaning your sampled readings stay consistent. Directivity reaches ≥15dB, which gives this directional coupler the ability to separate forward and reflected power cleanly. Whether you're testing amplifiers or monitoring transmitters, this directional coupler gives you trustworthy data.
Built for Power and Practical Connections
Rated at 150W CW (200W peak), this directional coupler handles heavy RF loads without issue. The main line uses SMA‑K, while the coupled port uses SMP‑J – a combination that fits many modern systems. Silver paint and ‑40~+60°C operating range make this directional coupler durable in both lab and field environments. Every detail of this directional coupler is designed for real‑world use.
Why Choose a Factory‑Direct Supplier?
Keenlion manufactures this directional coupler ourselves. That means samples are available for quick evaluation. We can also customize this directional coupler – adjust frequency response, coupling value, or connectors to your exact need. And because we skip distributors, our pricing on this directional coupler is consistently competitive. Need a modified directional coupler? Just tell us. As a production factory with short lead times, we deliver your directional coupler fast and at a fair price. Contact Keenlion for your directional coupler requirements today.













