Splitter circuit including transistors

Abstract

A splitter circuit includes a plurality of transistors each including a collector that is connected to a direct-current power supply and a base to which a common input signal is supplied, and a plurality of first resistors each including one end that is grounded and the other end that is connected to an emitter of a corresponding one of the plurality of transistors. A signal that appears on the emitter of each of the plurality of transistors is output from the other end of a corresponding one of the plurality of first resistors as an output signal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of a splitter circuit according to a first embodiment of the present invention;

FIG. 2 is a chart showing the characteristics of the splitter circuit shown in FIG. 1;

FIG. 3 is a block diagram of a splitter circuit according to a second embodiment of the present invention;

FIG. 4 is a chart showing the characteristics of the splitter circuit shown in FIG. 3;

FIG. 5 is a block diagram of a splitter circuit according to a third embodiment of the present invention;

FIG. 6 is a chart showing the characteristics of the splitter circuit shown in FIG. 5; and

FIG. 7 is a block diagram of a known surface-mountable splitter circuit.

Claims

1. A splitter circuit comprising: a plurality of transistors each including a collector that is connected to a direct-current power supply and a base to which a common input signal is supplied; anda plurality of first resistors each including one end that is grounded and the other end that is connected to an emitter of a corresponding one of the plurality of transistors, whereina signal that appears on the emitter of each of the plurality of transistors is output from the other end of a corresponding one of the plurality of first resistors as an output signal.

2. The splitter circuit according to claim 1, further comprising: a plurality of second resistors each including one end that is connected to the other end of a corresponding one of the plurality of first resistors and the other end from which the output signals is output.

3. The splitter circuit according to claim 1, further comprising: a plurality of third resistors that are connected in series to individual portions between the emitters of the plurality of transistors and the other ends of the plurality of first resistors corresponding to the plurality of transistors.

4. The splitter circuit according to claim 1, wherein at least the plurality of transistors and the plurality of first resistors are integrated on an integrated circuit.