Ferrite Microwave Technologies (FMT) is the leading global provider of high-power WR650 Waveguide, L-Band microwave circulators. FMT’s decades of designing, engineering, researching, manufacturing, and testing RF components has allowed us to become the most knowledgeable and trusted resource for high-power microwave circulators and isolators.
Check out our standard line of WR650 components, as well as custom capabilities on the Microwave Techniques website.
Applications for WR650 L-Band Circulators & Isolators
Typically, FMT develops WR650 circulators and isolators for L-Band radar applications, such as air traffic control. However, there several other applications that utilize the L-Band. This includes: defense communications, GPS, military telemetry, as well as scientific research, such as high-energy physics and fusion science. The L-Band spans from 1 to 2 GHz.
FMT: Circulator Features & Services
When failure isn’t an option, our high power components provide you with unique capabilities in protection, detection, and measurement. We offer power levels from 50 W to 50 MW, with a product portfolio that spans across frequencies from 50 MHz to 50 GHz. FMT offers a full range of services from design consultation for new components, to research and development for improving existing components. Overall, the main focus of our work with microwave components is to push the limit and redefine the boundaries of microwave technology. We offer L-Band WR650 circulators designed for:
- High Peak Power
- High Average Power
- Shock Extremes
- Extreme Temperature Variance
- High Vibration Extremes
- Liquid Cooled
- Convection Cooled
- Environments: Land, Mobile, Naval, Airborne
WR650 Waveguide L-Band Circulators: Product Highlights
Although we offer a catalog of thousands of high-power microwave devices, we’d like to put a spotlight on a few of our WR650 circulators. Below is a short list of the many L-Band circulators we offer. We welcome you to explore the electrical and mechanical specifications of Ferrite Microwave Technologies part numbers: LC3-24, LC3-533 and LC3-540.
The following specifications apply to FMT model number LC3-24:
| Frequency Band: | L-Band |
| Operating Frequency: | 1215 MHz to 1370 MHz |
| Peak Power: | 60 kW |
| Average Power: | 7.2 kW |
| VSWR (Ports 1 & 3): | < 1.20 |
| VSWR (Port 2): | < 1.12 |
| Insertion Loss (Port 1 to 2): | < 0.35 dB |
| Insertion Loss (Port 2 to 3): | < 0.5 dB |
| Isolation (Port 1 to 3): | > 25 dB |
| Isolation (Port 2 to 1): | > 22 dB |
| Waveguide Pressurization: | 5 PSIG (max.) |
| Flanges: | CPR-650F |
Dual Junction Duplexers
FMT model number LC3-533 is a WR650 dual junction duplexer. The following specifications apply:
| Frequency Band: | L-Band |
| Operating Frequency: | 1215 to 1350 MHz |
| Peak Power: | 70 kW |
| Average Power: | 7.0 kW |
| Pulse Width: | 1 to 300 microseconds |
| VSWR: | 1.22:1 (all ports) |
| Insertion Loss (TX Port to ANT Port): | 0.68 dB (max.) |
| Insertion Loss (ANT Port to RX Port): | 0.34 dB (max.) |
| Insertion Loss (ANT Port to TX Port): | -40 dB (min.) |
| Insertion Loss (TX Port to RX Port): | -20 dB (min.) |
| Flanges: | WR-650 Flat |
| Weight: | 34 kg (max.) (74.96 lbs.) |
L-Band WR650 Waveguide Isolators
The following data applies to FMT model LC3-540. It is a L-Band circulator, with a load attached (isolator):
| Frequency Band: | L-Band |
| Operating Frequency: | 1.3 GHz + 100 KHz |
| Return Loss: | 25 dB (min.) (18 dB over + 5 MHz) |
| Isolation: | 25 dB (min.) (18 dB over + 5 MHz) |
| Loss: | 0.15 dB (max.) |
| Forward Power: | 7 kW CW |
| Reflected Power: | 7 kW CW (any phase) |
| Coolant Flow Rate: | 4 GPM |
| Cooling Inlet Temp: | 30 – 40°C |
| Pressure Drop: | 14 psi (max.) |
| Inlet Pressure: | 175 psig |
| Waveguide Pressurization: | 4 psig |
| Coolant Pressurization: | SS-12-AN-1-12 (Swagelok) |
| Weight: | + 111.0 lbs ( + 50.35 kg) |
Product Spotlight: LC3-528
As a product spotlight, Ferrite Microwave Technologies welcomes you to explore model LC3-528. It is a high-power, WR650 waveguide circulator, operating in the L-Band. The following specifications apply:
| Frequency Band: | L-Band |
| Operating Frequency: | 1300 + 5 MHz |
| Peak Power: | 0.35 MW |
| Average Power: | 5 kW |
| VSWR: | < 1.15 |
| Insertion Loss: | < 0.1 dB |
| Isolation: | > 28 dB |
| Pulse Length: | 1.5 ms |
| Waveguide: | WR650 |
| Width: | 16 inches (40.64 cm) |
WR650 L-Band: LC3-535
As another product spotlight, Ferrite Microwave Technologies welcomes you to explore model LC3-535.
| Frequency Band: | L-Band |
| Operating Frequency: | 1497 + 10 MHz |
| Continuous Wave Power: | 13 kW |
| Reverse Power: | 100% (any phase) |
| VSWR: | < 1.20 |
| Insertion Loss: | < 0.2 dB |
| Isolation: | > 21 dB |
| Waveguide: | WR650 |
| Width: | 16 inches (40.64 cm) |
To learn more about our expansive line of WR650 Waveguide L-Band circulators, isolators, duplexers, or other high-power microwave components, contact our customer support team at sales@microwavetechniques.com – we look forward to working with you on your next RF project!
