Active Components > Pin Diode Switch
Switch - A single-pole, double-throw switch has one input port and two
selectable output ports.
- SPDT Terminated Switch -
A single-pole, double-throw switch with one open output RF port internally
terminated in a 50-ohm resistive load.
- Multi-position Switch -
A switch with one input and more than two outputs. Standard CEI multi-throw
switches provide up to 6 selectable outputs from a single input.
- Multi-position Terminated
Switch - A multi-position switch with each unused or open output RF port
internally terminated in a 50-Ohm resistive load.
- Transfer Switch (DPDT) - A
transfer switch has two independant paths that operate simultaneously in either
of two selected positions.
- Failsafe - A mode
of operation in which the switch moves to the closed position when the actuating
voltage is applied and always returns to a predetermined position when the
voltage is removed.
- Latching - Also
called pulse latching, a mode of operation in which the switch remains in a
preselected position whenever the actuating voltage is removed or interrupted,
and holds that preselected position until a voltage is applied to another
- Momentary (normally open)
- A mode of operation in which all output ports of the switch are
disconnected from the input port until a voltage is applied to maintain a
selected position. The switch returns to its open position with the removal of
Electromechanical Switch Options
- Indicator Circuitry -
A set of internally mounted contacts mechanically connected to the switch
actuator allowing external monitoring of switch RF status.
- Suppression Diodes - This
option offers fast-recovery rectifiers (diodes) connected in parallel with the
coics of the switch to suppress any transient voltage generated by the coils.
Suppression Diodes are recommended with TTL Logic.
- TTL Logic - Transistor-transistor-logic
driver circuitry which enables the status of the switch to be controlled by the
level of the TTL logic input.
- Cut off Power Circuit -
This applies to a latching switch only. A switch that has the ability to
disconnect the actuator drive circuit so that D.C. current will not be consumed
after switching has been accomplished.
- Low or Ultra
Intermodulation - This option allows for a -110 dBc (LOW) or -130 dBc
(ULTRA LOW) passive intermodulation (PIM) level @ the PIM frequency. PIM is a
form of signal distortion that occurs whenever signals at two or more
frequencies conduct simultaneously in a passive device which contains some