| 摘要 |
An integrated voltage-controllable RF-signal attenuator having a pair of signal input terminals and a pair of signal output terminals, comprising a first signal transmission path connected between a signal input terminal and a signal output terminal, which attenuator includes a first pair of PIN-diodes which are arranged in series opposition and which have a RF-signal impedance which is variable by passing a variable forward bias current through them, and a signal discharge path connected between the signal input terminals, said discharge path comprising a second pair of PIN-diodes arranged in series opposition, which attenuator also includes a special circuit of pairs of PIN-diodes, arranged in series opposition, by means of which the distortions can be kept lower within the normal attenuation range than is possible with the known attenuators which are provided with the same pairs of PIN-diodes, arranged in series opposition. |
