JPH0182525U - - Google Patents
Info
- Publication number
- JPH0182525U JPH0182525U JP1987178004U JP17800487U JPH0182525U JP H0182525 U JPH0182525 U JP H0182525U JP 1987178004 U JP1987178004 U JP 1987178004U JP 17800487 U JP17800487 U JP 17800487U JP H0182525 U JPH0182525 U JP H0182525U
- Authority
- JP
- Japan
- Prior art keywords
- band
- transmission line
- signal
- input
- output
- 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
- 230000005540 biological transmission Effects 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuits Of Receivers In General (AREA)
Description
第１図および第２図はそれぞれこの考案の帯域
切換装置の実施例１および実施例２の結線図、第
３図は従来例の結線図である。
１，２…フイルタ、ＶＡ１，ＶＡ２，ＶＡ′…
可変減衰器、Ｄ９，Ｄ１０，Ｄ１３，Ｄ１４，Ｄ
１９，Ｄ２０，Ｄ２３，Ｄ２４…ダイオード、Ｉ
Ｂ，ＩＢ′…逆バイアス供給手段。
1 and 2 are connection diagrams of a first and second embodiment of the band switching device of this invention, respectively, and FIG. 3 is a connection diagram of a conventional example. 1, 2...Filter, VA1, VA2, VA'...
Variable attenuator, D9, D10, D13, D14, D
19, D20, D23, D24...Diode, I
B, IB'... Reverse bias supply means.
Claims (1)
れた帯域の異なる複数の帯域フイルタからなり、
前記各フイルタの選択により、前記伝送ラインの
伝送信号の周波数帯域を所望の帯域に切り換える
帯域切換装置において、 前記伝送ラインの入力信号レベルに応じて出力
電圧が変化する制御電圧発生部と、 前記各フイルタの入出力に設けられ前記出力電
圧により順バイアス量が制御されるダイオードか
らなる可変減衰器と、 前記各ダイオードに選択的に逆バイアスを与え
逆バイアス状態の前記ダイオードにより前記フイ
ルタの入、出力信号を遮断する逆バイアス供給手
段と を備えた帯域切換装置。[Claims for Utility Model Registration] Consisting of a plurality of band filters with different bands, each provided in parallel in the middle of a signal transmission line,
A band switching device that switches the frequency band of the transmission signal of the transmission line to a desired band by selecting each of the filters, comprising: a control voltage generating section whose output voltage changes according to the input signal level of the transmission line; a variable attenuator consisting of a diode that is provided at the input and output of the filter and whose forward bias amount is controlled by the output voltage; and a variable attenuator that selectively applies a reverse bias to each of the diodes so that the input and output of the filter is controlled by the reverse biased diode. A band switching device comprising a reverse bias supply means for blocking a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987178004U JPH0182525U (en) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987178004U JPH0182525U (en) | 1987-11-20 | 1987-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0182525U true JPH0182525U (en) | 1989-06-01 |
Family
ID=31469645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987178004U Pending JPH0182525U (en) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0182525U (en) |
-
1987
- 1987-11-20 JP JP1987178004U patent/JPH0182525U/ja active Pending
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