JPH0353053U - - Google Patents
Info
- Publication number
- JPH0353053U JPH0353053U JP11319689U JP11319689U JPH0353053U JP H0353053 U JPH0353053 U JP H0353053U JP 11319689 U JP11319689 U JP 11319689U JP 11319689 U JP11319689 U JP 11319689U JP H0353053 U JPH0353053 U JP H0353053U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- variable attenuation
- power amplifier
- control signal
- signal
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Radio Relay Systems (AREA)
Description
第１図はこの考案の一実施例による電力増幅器
を示す構成図、第２図はこの考案の電力増幅器を
用いた時の切換状態を示す図、第３図はアンテナ
を切換える場合の中継器の構成を示す図、第４図
は従来の電力増幅器を示す図、第５図は従来の電
力増幅器を用いた時の切換状態を示す図である。
図において、２……可変減衰器、３……電力増
幅回路、５……減衰量制御回路である。なお、図
中同一符号は、同一又は相当部分を示す。
Figure 1 is a configuration diagram showing a power amplifier according to an embodiment of this invention, Figure 2 is a diagram showing switching states when using the power amplifier of this invention, and Figure 3 is a diagram of a repeater when switching antennas. FIG. 4 is a diagram showing a conventional power amplifier, and FIG. 5 is a diagram showing a switching state when the conventional power amplifier is used. In the figure, 2... variable attenuator, 3... power amplifier circuit, 5... attenuation amount control circuit. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
減衰回路の出力信号を増幅する電力増幅回路と、
上記可変減衰回路の減衰量を、外部からの制御信
号により、制御信号の存在する間、一時的に最大
減衰量に設定する制御回路とを具備したことを特
徴とする電力増幅器。 a variable attenuation circuit that inputs a communication signal; a power amplification circuit that amplifies the output signal of the variable attenuation circuit;
A power amplifier comprising: a control circuit that temporarily sets the attenuation amount of the variable attenuation circuit to the maximum attenuation amount while the control signal is present using an external control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11319689U JPH0353053U (en) | 1989-09-27 | 1989-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11319689U JPH0353053U (en) | 1989-09-27 | 1989-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353053U true JPH0353053U (en) | 1991-05-22 |
Family
ID=31661616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11319689U Pending JPH0353053U (en) | 1989-09-27 | 1989-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353053U (en) |
-
1989
- 1989-09-27 JP JP11319689U patent/JPH0353053U/ja active Pending
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