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What are Microwave Devices?

Need for High-Frequency Relays

In order to control high-frequency signals, it is necessary to use dedicated high-frequency relays rather than regular relays. The following problem arise when relays are used in high-frequency circuits.

1. Leakage of signals between the contacts(circuits)when the contacts are open ⇒  Isolation

The higher the frequency,the greater the leakage,and the greater the interference that arises between circuits.

2. Loss of signals the contacts are closed ⇒ Insertion loss

The higher the frequency,the greater the signal loss between the contacts (circuits), the less possible it becomes to transfer the signals reliably and the more this leads to heat generation.


Consequently, a relay that features minimal signal leakage between the contacts when the contacts are open and minimal signal loss when the contacts are closed even a higher signal frequency can be described as an excellent high-frequency relay.

signal leakage when the
contacts are OFF
signal loss when the
contacts are ON

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Microwave Devices

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