VARIABLE EQUALIZER

摘要

The variable equalizer (200) provides for independent control of a number of breakpoints in the frequency response of the equalizer so as to allow the equalizer to be readily tuned to compensate for the tilt of coaxial cables over a wide range of characteristic attenuation. In one embodiment, the variable equalizer includes a two port bridge "T" network with variable top (208) and bottom (210) branches that are independently and selectively adjusted to create a desired frequency response. For example, in one embodiment, the top branches include a number of variable RC networks and the bottom branches include a number of variable LR networks. In some embodiments, PIN diodes provide the variable resistance in these RC networks.