Resistor board and attenuator having the same

Abstract

A resistor board for attenuating a signal, includes: a first signal section for receiving the signal; a second signal section for outputting the signal; and at least two signal lines disposed between the first signal section and the second signal section. Each of the signal lines includes a first resistor section, a first signal transmission section, and a second resistor section respectively arranged in series. The first resistor section and the second resistor section are formed of a first resistor layer. The first signal transmission section is formed of the first resistor layer and a first metal layer. The resistor board further includes a ground section for attenuating the signal, and a first ground line disposed between the ground section and at least one of the signal lines. The first ground line includes a third resistor section formed of the first resistor layer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is sectional view of an attenuator partially broken along a centerline thereof according to an embodiment the present invention;

FIG. 2 is a sectional perspective view of a second part;

FIG. 3 is a view showing an assembly process of the second part at an intermediate stage;

FIG. 4 is view showing the assembly process of the second part at a completed state;

FIG. 5 is a sectional view of the second part shown in FIG. 4;

FIG. 6 is a plan view of a resistor board;

FIG. 7 is a view showing a resistor circuit of the resistor board shown in FIG. 6;

FIGS. 8( a) to 8(c) are views of resistor boards according to other embodiments of the present invention; and

FIGS. 9( a) to 9(d) are views showing conventional resistor boards.

Claims

1. A resistor board for attenuating a signal, comprising: a first signal section for receiving the signal;a second signal section for outputting the signal;at least two signal lines disposed between the first signal section and the second signal section for electrically connecting the first signal section and the second signal section, each of said signal lines including a first resistor section, a first signal transmission section, and a second resistor section respectively arranged in series, said first resistor section and said second resistor section being formed of a first resistor layer, said first signal transmission section being formed of the first resistor layer and a first metal layer;a ground section for attenuating the signal; anda first ground line disposed between the ground section and at least one of the signal lines for electrically connecting the ground section and the at least one of the signal lines, said first ground line including a third resistor section formed of the first resistor layer.

2. The resistor board according to claim 1, wherein said first ground line is connected to the first signal transmission section of the at least one of the signal lines.

3. The resistor board according to claim 1, wherein said first ground line further includes a second signal transmission section formed of the first resistor layer and a second metal layer.

4. The resistor board according to claim 1, wherein said first ground line is connected to the at least one of the signal lines to form a first resistor block pattern having a T character shape.

5. The resistor board according to claim 1, further comprising a second ground line disposed between the ground section and the at least one of the signal lines for electrically connecting the ground section and the at least one of the signal lines, said second ground line including a fourth resistor section formed of the first resistor layer.

6. The resistor board according to claim 5, wherein said at least one of the signal lines further includes a third signal transmission section and a fourth resistor section arranged in series, said third signal transmission section being formed of the first resistor layer and a third metal layer, said fourth resistor section being formed of the first resistor layer.

7. The resistor board according to claim 6, wherein said second ground line is connected to the third signal transmission section to form a second resistor block pattern having a π character shape.

8. The resistor board according to claim 1, wherein said first signal section is formed of the first resistor layer and a fourth metal layer, and said second signal section is formed of the first resistor layer and a fifth metal layer.

9. The resistor board according to claim 1, wherein said ground section is formed of the first resistor layer and a sixth metal layer.

10. The resistor board according to claim 1, further comprising a hollow portion in an area surrounded by the first signal section, the second signal section, and the signal lines, said hollow portion not including the first resistor layer and the first metal layer.

12. The resistor board according to claim 4, wherein said first resistor block pattern is connected to a third resistor block having the T character shape in parallel.

13. The resistor board according to claim 7, wherein said second resistor block pattern is connected to a fourth resistor block having the π character shape in parallel.

14. An attenuator comprising the resistor board according to claim 1.