Active-type broadband power divider

Details Active-type broadband power divider Active-type broadband power divider

1991-11-20

1992-12-01

Mottola, Steven

Amplifiers

With distributed parameter-type coupling means

Distributed amplifier

330286, H03F 360

Patent

active

051682427

ABSTRACT:
An active-type broadband power divider has a pair of distributed amplifiers which are coupled together by a distributed capacitive coupling to provide a predetermined phase shift between respective output signals thereof. The distributed amplifiers are in the form of a row of three-terminal transistors having their gates and drains connected to gate and drain lines. The gate and drain lines are artificial transmission lines. By distributing the capacitive coupling between the gate and/or drain lines, a constant 90 degree phase shift is obtained over the entire bandwidth of the artificial transmission lines. For a 180 degree phase shift, a third distributed amplifier is provided with distributed capacitive coupling between its gate or drain line and that of the second distributed amplifier.

REFERENCES:
patent: 4973918 (1990-11-01), Schindler

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