Waveguide Circulators and Waveguide Isolators for Sale
Browse the waveguide circulators for sale at our online store below. Product availability may vary, so if you do not see the exact part, frequency range, or configuration you need, reach out to our team for support.
Not Sure Which High Power Waveguide Isolator or Circulator You Need?
Choosing the right waveguide circulators depends on more than basic part numbers. The operating frequency, continuous power rating, cooling method, flange configuration, load compatibility, and installation environment can all affect whether a component is suitable for your system.
Waveguide Circulator Specifications and Power Ratings
Our Machlett Microwave 915 MHz waveguide circulator provides a useful reference for comparing high-power components. Its published specifications include:
- Frequency: 915 MHz (UHF band), with operating frequency tolerances of ±5 MHz or ±10 MHz.
- Power handling: 75 kW continuous-wave (CW) input power.
- Insertion loss: 0.15 dB typical, with a maximum of 0.3 dB.
- Isolation: 20 dB or 28 dB with a matched water-load assembly.
- Port configuration and connections: CPR-975F flanges (WR-975, EIA 18-hole pattern), with dedicated arc-detector and light-test ports. RF port arrangement and load connections should be confirmed before installation.
- Cooling: Liquid cooling with a specified flow rate of 2-3 gallons per minute.
These specifications are model-specific. Other waveguide circulators may have different frequency ranges, power ratings, port arrangements, and cooling requirements.
Circulator vs Isolator: What’s the Difference?
A waveguide RF circulator is typically a three-port device that directs RF energy sequentially from one port to the next. A high-power waveguide isolator, by contrast, provides a two-port path that allows forward transmission while diverting reflected power into a matched termination.
A circulator can also function as an isolator when its third port is connected to a properly rated matched load. This configuration helps protect the RF source from reflected energy.
Choose a waveguide circulator when you need a separate path for redirected power, or an isolator when you need forward transmission with integrated reflected-power absorption.
If you are unsure which high-power waveguide circulator or waveguide isolator setup is right for your equipment, contact Penta Labs with your operating frequency, power level, existing part number, photos, and application details. Our team can help review your requirements and point you toward a suitable product or replacement path.
Why Buy Waveguide Circulators and Isolators from Penta Labs?
Penta Labs supports customers who need reliable RF and microwave products for demanding industrial, scientific, and specialty equipment. Our team understands that waveguide components are often part of larger systems where downtime, mismatch, reflected power, and incorrect fit can create costly problems.
When you buy a high-power waveguide isolator or waveguide RF circulator from Penta Labs, you are not just selecting a part from a list.
You can work with a supplier that understands high-power RF applications, legacy equipment, industrial microwave systems, and related RF microwave components. That broader system knowledge is especially useful when a waveguide circulator must be matched with a load, generator, transition, coupler, or existing waveguide run.
Penta Labs can also help when a replacement is not completely straightforward. Some customers need to compare a directional waveguide coupler, a waveguide transition, or industrial microwave generators alongside the circulator itself to confirm how everything works together. Others may be maintaining older equipment where documentation is incomplete, unavailable, or difficult to verify.
For customers dealing with system issues, component failure, or legacy equipment questions, Penta Labs also offers radio frequency equipment repair support.
This makes us a practical choice for buyers who need more than a basic product listing and want help understanding how the component fits into the full RF or microwave system.
Whether you are replacing an existing UHF circulator, sourcing high-power waveguide circulators for a production system, or looking for a high-power waveguide isolator for reflected-power protection, Penta Labs can help you move from specification to purchase with greater confidence. Get help finding the right part.
