Q.
What are the different kinds of circulator and isolator?
- HF-Komponenten >
- Isolatoren / Zirkulatoren
A. Circulators are roughly classified into lumped constant and distributed constant types. Distributed constant type is further classified into waveguide type, strip line Y-junction type and substrate type. Moreover, there are cases where the strip line Y-junction type is referred to as a distributed constant type. Each of the features and uses are shown in Table.
| Classification | Characteristics | Primary uses | |
|---|---|---|---|
| Distributed constant type | Waveguide type | Low loss Large power handling design is possible Somewhat large in shape |
Microwave link Marine radar Mainly used in 3GHz or more |
| Strip line Y-junction type | Small compared to waveguide type Easy broadband design |
Microwave link Broadcast equipment, mobile communications based on other stations Mainly used in the UHF band or more |
|
| Substrate type | Conform to the planar circuit Small power handling capability |
Microwave link Mainly used in 1.5GHz or more |
|
| Lumped constant type | Small size, light weight Easy broadband design |
Broadcast equipment, mobile communications based on other stations Mobile phone terminal Mainly used in the VHF, UHF band or more |
|
Table Characteristics and applications of all kinds of circulators and isolators
