JPS6455729U - - Google Patents
Info
- Publication number
- JPS6455729U JPS6455729U JP15112687U JP15112687U JPS6455729U JP S6455729 U JPS6455729 U JP S6455729U JP 15112687 U JP15112687 U JP 15112687U JP 15112687 U JP15112687 U JP 15112687U JP S6455729 U JPS6455729 U JP S6455729U
- Authority
- JP
- Japan
- Prior art keywords
- pass filter
- frequency
- constant
- resistance
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Networks Using Active Elements (AREA)
Description
第１図ａは本考案の一実施例のフイルタ回路を
示す図、第１図ｂは該実施例中の各分波器に用い
られている各フイルタの周波数特性を示す図、第
２図ａは従来の定入力分波器を示す図、第２図ｂ
はその分波器内の各フイルタの周波数特性を示す
図である。
１０９：３抵抗型パワースプリツタ、１１０，
１２０：定入力抵抗分波器。
Fig. 1a is a diagram showing a filter circuit according to an embodiment of the present invention, Fig. 1b is a diagram showing the frequency characteristics of each filter used in each duplexer in the embodiment, Fig. 2a is a diagram showing a conventional constant input branching filter, Fig. 2b
is a diagram showing the frequency characteristics of each filter in the duplexer. 109: 3 resistance type power splitter, 110,
120: Constant input resistance duplexer.
Claims (1)
ルタと低域通過フイルタとを組み合わせて成り、
その入力インピーダンスの周波数特性が定抵抗特
性を有する第１の定入力抵抗分波器と、第１のカ
ツトオフ周波数より低い、第２のカツトオフ周波
数を有する高域通過フイルタと低域通過フイルタ
とを組み合わせて成りその入力インピーダンスの
周波数特性が定抵抗特性を有する第２の定入力抵
抗分波器とを設けて成り、前記第１の定入力抵抗
分波器内の低域通過フイルタの出力から低周波領
域の信号を選択的に取り出し、前記第２の定入力
抵抗分波器内の高域通過フイルタの出力から高周
波領域の信号を選択的に取り出すべくして使用さ
れることを特徴とするフイルタ回路。 a combination of a high-pass filter and a low-pass filter having a first cutoff frequency;
A combination of a first constant input resistance duplexer whose input impedance frequency characteristics have constant resistance characteristics, and a high-pass filter and a low-pass filter each having a second cutoff frequency lower than the first cutoff frequency. and a second constant input resistance duplexer whose input impedance frequency characteristic has a constant resistance characteristic, and a low frequency A filter circuit characterized in that the filter circuit is used to selectively extract signals in a high frequency region from the output of a high-pass filter in the second constant input resistance duplexer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15112687U JPS6455729U (en) | 1987-09-30 | 1987-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15112687U JPS6455729U (en) | 1987-09-30 | 1987-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6455729U true JPS6455729U (en) | 1989-04-06 |
Family
ID=31424891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15112687U Pending JPS6455729U (en) | 1987-09-30 | 1987-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6455729U (en) |
-
1987
- 1987-09-30 JP JP15112687U patent/JPS6455729U/ja active Pending
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