Description
Mi-Wave’s 178 series is an H-plane, three-port Y-junction ferrite device with one arm internally terminated in a matched load.
Reflected energy is circulated into this load to isolate the input.
All external mating surfaces are machined to extreme flatness to provide connection to standard waveguide flanges for minimum discontinuity.
Note: Our website contains just a few types of Isolators we build. Consult with us for your specific needs.
| Waveguide Band | Model No. | Frequency Range (GHz) | Bandwidth (GHz) | Isolation (dB) | Insertion Loss (dB) | VSWR (Max) | Average Power (Watts) | Peak Power (kW) | Input and Output Ports | Temperature Range (°C) | Weight (Oz) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| K Band | 178K-XX/595 | 18-26.5 | Full Band | 20 | 0.4 | 1.3:1 | 5 | 1 | WR-42 Waveguide with UG-595/U Flange | -15 to +65 | 3 |
| A Band | 178A-XX/599 | 26.5-40 | Full Band | 20 | 0.4 | 1.3:1 | 5 | 1 | WR-28 Waveguide with UG-599/U Flange | -15 to +65 | 3 |
| B Band | 178B-XX/383 | 33-50 | 2 | 20 | 0.5 | 1.3:1 | 4 | 1 | WR-22 Waveguide with UG-383/U Flange | -15 to +65 | 3 |
| U Band | 178U-XX/383 | 40-60 | 1.3 | 18 | 0.7 | 1.35:1 | 3 | 1 | WR-19 Waveguide with UG-383/U-M Flange | -15 to +65 | 3 |
| V Band | 178V-XX/385 | 50-75 | 1.5 | 18 | 0.8 | 1.4:1 | 2 | 1 | WR-15 Waveguide with UG-385/U Flange | 0 to 50 | 5 |
| E Band | 178E-XX/387 | 60-90 | 1.5 | 15 | 0.9 | 1.4:1 | 1 | 1 | WR-12 Waveguide with UG-387/U Flange | 0 to 50 | 5 |
| W Band | 178W-XX/387 | 75-110 | 1.5 | 15 | 1 | 1.4:1 | 1 | 1 | WR-10 Waveguide with UG-387/U-M Flange | 0 to 50 | 5 |
| F Band | 178F-XX/387 | 90-140 | 1.5 | 15 | 1.3 | 1.4:1 | 1 | 1 | WR-8 Waveguide with UG-387/U-M Flange | 0 to 50 | 5 |
RF Isolators
An RF Isolator is a two-port device that protects RF components in a system from excessive signal reflection. It is a non-reciprocal device that ensures all the power is transmitted from port 1 to port 2, while isolating absorbing/isolating any power incident at port 2. An isolator is often placed in front of a sensitive component in the Rx/Tx chain to avoid unwanted signals from damaging sensitive components.
An isolator is a two-port device that transmits microwave or radio frequency power in one direction only. Due to internal behavior, propagation in one direction is allowed while the other direction is blocked. The non-reciprocity observed in these devices usually comes from the interaction between the propagating wave and the material, which can be different with respect to the direction of propagation. See more here
Selecting RF Isolators
When selecting an RF Isolator, knowing the parameters you need to specify is important. Below are a list of the key parameters to look out for when selecting an isolator:
Isolation (dB): The level of Isolation from the output port to the input port. The higher the isolation the better the components are protected.
Insertion Loss (dB): The signal loss from port 1 to port 2.
Power (W): This is the power level that the isolator can handle while maintaining its electrical characteristics. The forward power is the level of power that the isolator can handle an incident at port 1. The reverse power is the level of power incident at port 2 that the isolator can absorb.
Applications
The 178 Series Y-junction isolators are useful in test setup and operational systems. These devices provide a high degree of Isolation between signal sources and system loads by sharply attenuating reflected signals with very low loss in the forward direction.
