Switches

Switches are added to an EMIT design from the EMIT Elements component library. There is currently only one type of switch (T/R) available in EMIT.

The TR Switch component in EMIT is a 3-port device that controls the direction of signal flow. The orientation of the switch can be changed via the “flip” options on the component's right-click menu in the schematic editor.

When Finite Isolation is disabled (False), the TR Switch is an ideal switch and power can flow only across the connected port. EMIT automatically determines whether the TR Switch is in the Tx configuration (that is, the Tx Port is connected to the Common port) or the Rx configuration that is, the Rx Port is connected to the Common port) based on the simulated mode of operation of the configuration.

Noise Temperature (K): Noise power added by the switch.

Insertion Loss (dB): Defines the insertion loss between connected ports of the device. That is, the insertion loss from the Tx Port to the Common Port and the Common Port to the Rx Port.

Finite Isolation: Isolation between the disconnected ports of the device is assumed to be infinite unless Finite Isolation is enabled (True), in which case the value you provided is used.

Finite Bandwidth: By default, the bandwidth for an TR Switch is considered to be infinite. When Finite Bandwidth is enabled (True) a finite bandwidth for the TR Switch can be defined. The Out-of-Band Attenuation is then applied outside the defined pass band as shown in the plot below. See Band Pass Filter for definitions of the parameters.