Waveguide Circulator
Product Introduction
As a core directional signal control component in RF microwave systems, Waveguide Circulator mainly solves the problem of unidirectional signal transmission and reverse signal suppression between multiple waveguide ports. By utilizing the non-reciprocal electromagnetic properties of ferrite materials (under the action of a static magnetic field), it achieves directional energy transfer without relying on external power sources. According to the number of ports, common Waveguide Circulators include 3-port (the most widely used), 4-port, and multi-port types; according to the working principle, they can be divided into junction-type Waveguide Circulators, Y-type Waveguide Circulators, and microstrip-integrated Waveguide Circulators.
Product Specifications
Parameters | Details |
| Frequency Range | Covers DC to 110 GHz |
| Insertion Loss | ≤0.5dB |
| Reverse Isolation | ≥40 dB |
| VSWR (Voltage Standing Wave Ratio) | ≤1.2 (input port), ≤1.3 (output port) |
| Power Handling | Average power: 10-500 W; Peak power: 1-10 kW (high-power models support up to 50 kW peak power) |
| Operating Temperature | -40℃ to +85℃ |
Product Benefits
- Excellent directionality: Relies on ferrite non-reciprocal effects to ensure one-way signal transmission, effectively suppressing reverse reflection signals and reducing system noise.
- Low insertion loss: Optimized waveguide cavity structure and high-purity ferrite material reduce signal energy loss during transmission, ensuring signal integrity.
- High reverse isolation: Advanced magnetic circuit design and precise cavity processing achieve high isolation between reverse ports, avoiding cross-interference between system modules.
- Strong power adaptability: High-power models adopt heat-dissipating metal cavities and high-temperature-resistant ferrite cores, supporting long-term stable operation under high-power conditions.
- Wide operating temperature range: Undergoes strict high-low temperature cycling tests, adapting to harsh environments such as aerospace, outdoor, and industrial fields.
- Easy system integration: Standardized port flanges and compact structure allow direct connection with existing waveguide systems without additional adaptation.
Technical Features
- Precision magnetic circuit design: Integrates permanent magnets with uniform magnetic field distribution to provide a stable static magnetic field for the ferrite core, avoiding performance degradation caused by magnetic field fluctuations.
- Broadband matching technology: Designs gradient impedance transition structures at input/output ports to achieve low VSWR across the entire operating frequency band, expanding the applicable frequency range.
- High-power heat dissipation structure: High-power Waveguide Circulators adopt aluminum alloy or copper alloy cavities with thickened walls, and some models add heat sinks to accelerate heat conduction and prevent overheating.
- Sealed packaging technology: Outdoor and harsh-environment models use IP67/IP68-level sealed structures, preventing water vapor, dust, and chemical corrosion from damaging internal components.
- Miniaturized integration: Miniature models adopt integrated cavity design and thin-film magnetic circuits, reducing volume by 30% compared to traditional products, suitable for space-constrained scenarios.
- High-reliability testing: All products undergo aging tests, vibration tests, and high-low temperature tests to ensure consistent performance in complex environments.
Product Applications
- Communication systems: In microwave relay communication and satellite communication systems, Waveguide Circulator is used to isolate transmit and receive signals in shared antennas, avoiding mutual interference between transmitters and receivers.
- Radar systems: In military search radar, fire-control radar, and civilian weather radar, it prevents high-power transmit signals from damaging low-noise receive modules, improving radar detection sensitivity.
- Microwave measurement: As a core component of RF test platforms, it is used to separate test signals and reflected signals, ensuring the accuracy of power, frequency, and VSWR measurements.
- Electronic countermeasures (ECM): In electronic warfare equipment, it switches between jamming signal transmitters and reconnaissance antennas, preventing jamming signals from interfering with reconnaissance modules.
- Industrial microwave equipment: In microwave heating, drying, and plasma processing equipment, it isolates the microwave source from the load, protecting the microwave generator from load reflection signals.
- Aerospace systems: In aircraft radar, satellite communication subsystems, and missile guidance systems, it adapts to extreme environments such as high vibration, high altitude, and large temperature differences, ensuring stable signal transmission.
- 5G/6G base stations: In high-power microwave active antenna systems, it isolates multi-channel signals, reducing inter-channel interference and improving signal coverage quality.
OEM
Advanced Microwave provides professional OEM services for Waveguide Circulator to meet the personalized needs of different customer projects:
- Customized performance parameters: According to customer system requirements, customize Waveguide Circulators with specific frequency bands, power levels, isolation indexes, and temperature ranges.
- Structural and interface customization: Design non-standard waveguide interfaces, miniaturized cavities, or special-shaped structures to adapt to limited installation spaces.
- High-power customization: For high-power application scenarios, develop customized heat dissipation structures and high-power-resistant ferrite cores to meet peak/average power requirements.
- Technical collaboration: Provide pre-sales technical consultation and post-sales debugging support to assist customers in system integration and performance verification.
FAQ
Q: Can Waveguide Circulator be used in high-frequency bands?
A: Yes. We provide high-frequency Waveguide Circulator models that adopt high-precision micro-machined cavities and low-loss ferrite materials to ensure stable performance in high-frequency bands. However, high-frequency models have stricter requirements for installation alignment; it is recommended to use professional flanges for connection to avoid additional insertion loss.
Q: What should I do if the reverse isolation of the Waveguide Circulator decreases during use?
A: First, check whether the circulator’s magnetic circuit is damaged or whether the port flange is loose. If the magnetic circuit is damaged, contact the manufacturer for magnetic circuit maintenance or replacement; if the flange is loose, re-tighten the flange screws according to the torque requirements. If the problem persists, return the product to the manufacturer for professional testing and repair.
Q: Is there a difference between 3-port and 4-port Waveguide Circulators in application scenarios?
A: Yes. 3-port Waveguide Circulators are mainly used in scenarios requiring "transmit-receive-isolate", where Port 1 is for input, Port 2 for output, and Port 3 for isolating reverse signals. 4-port Waveguide Circulators are suitable for multi-channel signal routing scenarios, enabling one-way signal transmission between four ports and supporting more complex system topologies.
Contact Us
If you need a high-performance Waveguide Circulator to optimize the directional signal transmission of your RF microwave system and improve anti-interference ability, contact us now to get customized solutions tailored to your project!
📧 Email: [sales@admicrowave.com]
