Circulator (CE)

Modeling of ideal frequency-independent circulators with S-parameters.

blockType: SubSystem

Path in the library:

/RF/Circuit Envelope/Junctions/Circulator (CE)

Description

Block Circulator (CE) simulates ideal passive three-port circulators in an envelope circuit simulation environment. Circulators are used to control the direction and flow of the signal inside the RF circuit. Block Circulator (CE) The signal can circulate clockwise or counterclockwise depending on the selected parameters.

Ports

Conserving

# 1+ — the first electrical port
electricity

Details

The RF electrical port corresponding to the positive terminal of the circulator.

Program usage name

1+

# 1− — the first electrical port
electricity

Details

The RF electrical port corresponding to the negative terminal of the circulator.

Program usage name

1−

# 3+ — The third electrical port
electricity

Details

The RF electrical port corresponding to the positive terminal of the circulator.

Program usage name

3+

# 3− — The third electrical port
electricity

Details

The RF electrical port corresponding to the negative terminal of the circulator.

Program usage name

3−

# 2+ — the second electrical port
electricity

Details

The RF electrical port corresponding to the positive terminal of the circulator.

Program usage name

2+

# 2− — the second electrical port
electricity

Details

The RF electrical port corresponding to the negative terminal of the circulator.

Program usage name

2−

Parameters

# Select component — direction of circulation
Circulator clockwise | Circulator counter clockwise | Tee H-plane (S11=0) | Reciprocal phase shifter

Details

The direction of circulation, given as:

Circulator clockwise (by default) — the matrix of S-parameters for a given value looks like this:
Circulator counter clockwise — the matrix of S-parameters for this value is as follows:
Tee H-plane (S11=0) — the matrix of S-parameters for this value is as follows:
Reciprocal phase shifter — the matrix of S-parameters for this value is as follows:

Values	`Circulator clockwise` \| `Circulator counter clockwise` \| `Tee H-plane (S11=0)` \| `Reciprocal phase shifter`
Default value	`Circulator clockwise`
Program usage name	`type`
Tunable	No
Evaluatable	Yes

# Phase shift, ports 1 and 2, rad — the phase shift angle of the signal in ports 1 and 2

Details

The phase shift angle of the signal in ports 1 and 2, set as a positive scalar in radians.

Dependencies

To use this parameter, set for the parameter Select component value Reciprocal phase shifter.

Default value	`0.0`
Program usage name	`phase12`
Tunable	No
Evaluatable	Yes

# Phase shift, port 3, rad — The phase shift angle of the signal in the port 3

Details

The phase shift angle of the signal in the port is 3, set as a positive scalar in radians.

Dependencies

To use this parameter, set for the parameter Select component value Reciprocal phase shifter.

Default value	`0.0`
Program usage name	`phase3`
Tunable	No
Evaluatable	Yes

# Reference impedances, Ohm — the calculated total resistance of the circulator

Details

The design impedance of the circulator, given as a scalar in ohms.

Default value	`50.0`
Program usage name	`z0`
Tunable	No
Evaluatable	Yes