Ku-band Waveguide Isolator (WR75) is a high-performance non-reciprocal RF component engineered to protect sensitive microwave equipment from reflected power and to stabilize forward signal flow in Ku-band systems. Operating across 10.7–12.75 GHz — or any custom frequency range between 10–15 GHz upon request — this isolator provides robust suppression of reverse signals while maintaining minimum insertion loss and excellent VSWR performance. It is ideal for satellite uplinks, broadcasting transmitters, high-frequency microwave chains, and RF measurement environments requiring stable, reflection-free operation.
Designed with a durable aluminium alloy body, UBR120 flange interface, and wide operating temperature range (–40…+85 °C), the Ku-band Waveguide Isolator (WR75) ensures reliable operation in harsh outdoor conditions and precision indoor systems. With ≥23 dB isolation, ≤0.3 dB attenuation, and high handling capability of 100 W forward / 30 W reverse power, it provides outstanding protection for BUCs, amplifiers, sensitive receivers, and high-value microwave hardware. Its optimized magnetic structure ensures maximum throughput and minimal reflection across the entire Ku-band.
✅ High isolation ≥23 dB for effective suppression of reverse power
The isolator blocks unwanted reflections that can destabilize transmit paths or damage sensitive components, ensuring consistent forward-only signal propagation. This enhances system reliability in satellite and terrestrial microwave networks.
✅ Low insertion loss ≤0.3 dB with excellent VSWR ≤1.2
With minimal attenuation and controlled impedance, the isolator preserves signal strength and maintains stable amplitude-frequency performance. This low-loss behavior is critical for maintaining high-quality transmission in Ku-band RF chains.
✅ High-power operation: 100 W forward / 30 W reverse
The isolator supports demanding microwave systems where high transmitted power and reflection suppression are needed simultaneously. It protects upstream components from excessive return power during mismatch conditions or sudden load changes.
🛠️ Engineered for robust RF isolation in microwave systems Built on a precision magnetic structure, the isolator provides stable, repeatable isolation characteristics across the full operating temperature range. Its rugged aluminium housing and UBR120 flange ensure long-term mechanical reliability in fixed and mobile installations.
🛒 Ideal for satellite communication, broadcasting and RF measurement chains Whether integrated into BUC lines, antenna feeds, or test benches, the isolator enhances signal stability, reduces harmonic reflections, and protects high-value microwave equipment from reverse power damage.
📌 Key features
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WR75 Ku-band waveguide isolator with high isolation ≥23 dB
The isolator ensures efficient suppression of reverse signals, protecting sensitive RF components and improving overall link performance. Its stable isolation curve supports reliable operation across a wide range of Ku-band frequencies.
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Low insertion loss ≤0.3 dB and VSWR ≤1.2 for maximum throughput
Optimized for minimal attenuation and superior matching, the isolator maintains clean forward propagation. This ensures high transmission efficiency and reduces power loss in demanding RF applications.
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High forward power capability (100 W) and reverse power tolerance (30 W)
Engineered for robust power handling, the isolator withstands harsh operating conditions while maintaining electrical stability. It is suitable for high-power satellite uplinks, broadcast systems, and professional microwave chains.
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Wide operating temperature range –40…+85 °C
Thermally stable design ensures consistent performance in extreme environmental conditions. This makes the isolator suitable for outdoor terminals, mountaintop stations, and mobile communication platforms.
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Durable aluminium alloy construction with UBR120 flange
The precision-machined body ensures mechanical strength, low weight, and reliable long-term operation. Standard WR75/UBR120 interfaces guarantee easy integration into established Ku-band waveguide systems.
⚙️ Main functions
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Protection of RF components from reflected energy in Ku-band systems
The isolator prevents return signals from damaging amplifiers, converters, and transmitter stages, ensuring stable high-frequency performance. By eliminating harmful backflow, it improves equipment longevity and system reliability.
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Stabilization of forward signal propagation with minimal loss
Low insertion loss and optimal impedance matching ensure maximum power delivery to downstream components. This maintains signal purity and improves efficiency in satellite communication and broadcast infrastructure.
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Reduction of reflection-induced distortion and amplitude ripple
By suppressing backward-traveling waves, the isolator minimizes standing wave formation and amplitude variations across the RF path. This improves modulation quality, SNR, and link stability in high-frequency microwave systems.
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Preservation of system performance across extreme temperature ranges
The isolator maintains consistent electrical behavior from –40 to +85 °C, ensuring dependable performance in harsh outdoor environments. This is essential for remote stations, mobile platforms, and mission-critical RF deployments.
🧩 Applications
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Satellite uplinks, BUC protection and antenna feed systems
The isolator safeguards BUCs and transmit modules from reflected power during antenna mismatch or rapid load changes. Its low loss and high isolation support stable, distortion-free transmission in Ku-band satellite networks.
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Broadcasting and high-power microwave transmitters
Its 100 W forward / 30 W reverse capability makes it ideal for broadcast uplinks and microwave communication lines requiring robust protection. The isolator maintains clean RF flow even under high-power operational stress.
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Microwave measurement setups and laboratory RF environments
The isolator ensures controlled signal flow and prevents reflections that distort measurement accuracy. Engineers rely on its stable characteristics for calibration benches, RF prototypes, and test stations.
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Telecommunication and radar systems requiring reflection suppression
By improving isolation and reducing VSWR-induced instability, the isolator enhances the reliability of radar modules, RRL links, and high-frequency telecom platforms. It ensures consistent operation even in dynamic or temperature-variable conditions.
💡 Why you should buy from us❓
- 1.5 years warranty
- 7 years after-sales support
- Remote support team of engineers
- Discount program for regular customers 🎁
💬 Contact Us
For additional details or assistance regarding the Ku-band Waveguide Isolator (WR75), feel free to contact our team. We provide professional consultation and aftersales support to help with installation and setup, ensuring you get the most out of your equipment.
