JPH0298534U - - Google Patents
Info
- Publication number
- JPH0298534U JPH0298534U JP1989006330U JP633089U JPH0298534U JP H0298534 U JPH0298534 U JP H0298534U JP 1989006330 U JP1989006330 U JP 1989006330U JP 633089 U JP633089 U JP 633089U JP H0298534 U JPH0298534 U JP H0298534U
- Authority
- JP
- Japan
- Prior art keywords
- coupler
- extracting
- monitor circuit
- reflected wave
- traveling wave
- 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
- 230000002457 bidirectional effect Effects 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Transmitters (AREA)
Description
第１図はこの考案の第１の実施例による電力モ
ニタ回路を示す図、第２図は従来の電力モニタ回
路の一例を示す図、第３図は多重反射の様子を説
明するための図、第４図は多重反射分が送信波に
加算される様子と、本考案の動作原理を説明する
ためのベクトル図、第５図は洩れ信号の反射波へ
の影響を除去するようにした本考案の第２の実施
例を示す図である。
図において、１は電力増幅器、２はサーキユレ
ータ、３は双方向性結合器、４は空中線、５は受
信機、６は減衰器、７は移相器、８は合成器、９
，１０は結合器である。なお図中同一符号は同一
又は相当部分を示す。
FIG. 1 is a diagram showing a power monitor circuit according to a first embodiment of this invention, FIG. 2 is a diagram showing an example of a conventional power monitor circuit, and FIG. 3 is a diagram for explaining multiple reflections. Figure 4 shows how multiple reflections are added to the transmitted wave and a vector diagram to explain the operating principle of the present invention. Figure 5 shows the present invention which removes the influence of leakage signals on the reflected waves. It is a figure which shows the 2nd Example of this. In the figure, 1 is a power amplifier, 2 is a circulator, 3 is a bidirectional coupler, 4 is an antenna, 5 is a receiver, 6 is an attenuator, 7 is a phase shifter, 8 is a combiner, 9
, 10 is a coupler. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
いて、 進行波成分を取り出す第１の結合器と、 反射波成分を取り出す第２の結合器と、 上記取り出した反射波のレベルを変化させる減
衰器及び位相を変化させる移相器と、 上記取り出した進行波と反射波とを合成する合
成器とを備えたことを特徴とする電力モニタ回路
。[Claims for Utility Model Registration] A power monitor circuit that monitors the power of a traveling wave, comprising: a first coupler for extracting a traveling wave component; a second coupler for extracting a reflected wave component; and a second coupler for extracting a reflected wave component; A power monitor circuit comprising an attenuator that changes the level, a phase shifter that changes the phase, and a synthesizer that combines the extracted traveling wave and reflected wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989006330U JPH0298534U (en) | 1989-01-23 | 1989-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989006330U JPH0298534U (en) | 1989-01-23 | 1989-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0298534U true JPH0298534U (en) | 1990-08-06 |
Family
ID=31210434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989006330U Pending JPH0298534U (en) | 1989-01-23 | 1989-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0298534U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008157897A (en) * | 2006-12-26 | 2008-07-10 | Railway Technical Res Inst | Signal line inspection system |
| JP2010161466A (en) * | 2009-01-06 | 2010-07-22 | Mitsubishi Electric Corp | Directional coupler |
| JP2011061440A (en) * | 2009-09-09 | 2011-03-24 | Mitsubishi Electric Corp | Directional coupler |
| WO2011111219A1 (en) * | 2010-03-12 | 2011-09-15 | 富士通株式会社 | Wireless communication apparatus and reflected wave acquiring method |
-
1989
- 1989-01-23 JP JP1989006330U patent/JPH0298534U/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008157897A (en) * | 2006-12-26 | 2008-07-10 | Railway Technical Res Inst | Signal line inspection system |
| JP2010161466A (en) * | 2009-01-06 | 2010-07-22 | Mitsubishi Electric Corp | Directional coupler |
| US7907032B2 (en) | 2009-01-06 | 2011-03-15 | Mitsubishi Electric Corporation | Directional coupler |
| JP2011061440A (en) * | 2009-09-09 | 2011-03-24 | Mitsubishi Electric Corp | Directional coupler |
| WO2011111219A1 (en) * | 2010-03-12 | 2011-09-15 | 富士通株式会社 | Wireless communication apparatus and reflected wave acquiring method |
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