■Small-signal amplifier
The signal of output power 20dBm (100mW) or less has been treated as a small signal in the Thamway. The amplifier that is the output power of 100mW or less is classified with the small-signal amplifier.
The frequency bandwidth, the I/O impedance, connector shape, size, and shape, etc. will design and manufacture the product according to customer's specification. It becomes wideband in generally 100mW or less, It becomes a narrowband when becoming it 1W near.

Frequency range of small signal amplifier (Reference)