JPH03105039U - - Google Patents
Info
- Publication number
- JPH03105039U JPH03105039U JP1427890U JP1427890U JPH03105039U JP H03105039 U JPH03105039 U JP H03105039U JP 1427890 U JP1427890 U JP 1427890U JP 1427890 U JP1427890 U JP 1427890U JP H03105039 U JPH03105039 U JP H03105039U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- control
- amplifier
- generates
- level
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transmitters (AREA)
Description
第１図は、本考案の一実施例を示すブロツク図
、第２図は従来の送信装置のブロツク図である。
１……発振周波数制御回路、２……ＡＧＣ回路
、３……可変局部発振器、４……ＩＦ信号入力端
子、５……信号入力端子、６……ＩＦ変調器、７
……ＩＦ切替器、８……ＩＦ増幅器、１０……ミ
キサ、１１……フイルタ、１２……電力増幅器、
１３……出力端子。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional transmitter. 1...Oscillation frequency control circuit, 2...AGC circuit, 3...Variable local oscillator, 4...IF signal input terminal, 5...Signal input terminal, 6...IF modulator, 7
...IF switcher, 8...IF amplifier, 10...mixer, 11...filter, 12...power amplifier,
13...Output terminal.
Claims (1)
続された高周波部とを有する送信装置において、
前記高周波部内のＩＦ出力レベルを一定にするよ
うに増幅する増幅器と、前記増幅器の利得制御を
行うとともに前記利得制御のレベルがある定めら
れた値を超えた場合に制御信号を発生するＡＧＣ
回路と、前記制御信号により局部発振周波数を送
信周波数と同じ周波数信号に変更する局部発振器
とを有することを特徴とする送信装置。 In a transmitting device having a control section that generates an IF signal and a high frequency section connected by an IF cable,
an amplifier that amplifies the IF output level in the high frequency section to a constant level; and an AGC that performs gain control of the amplifier and generates a control signal when the level of the gain control exceeds a predetermined value.
A transmitting device comprising: a circuit; and a local oscillator that changes the local oscillation frequency to the same frequency signal as the transmission frequency according to the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1427890U JP2514571Y2 (en) | 1990-02-16 | 1990-02-16 | Transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1427890U JP2514571Y2 (en) | 1990-02-16 | 1990-02-16 | Transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03105039U true JPH03105039U (en) | 1991-10-31 |
| JP2514571Y2 JP2514571Y2 (en) | 1996-10-23 |
Family
ID=31517647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1427890U Expired - Lifetime JP2514571Y2 (en) | 1990-02-16 | 1990-02-16 | Transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514571Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008298279A (en) * | 2007-06-04 | 2008-12-11 | Toshiba Corp | Electronic equipment and hinge device used for the electronic equipment |
-
1990
- 1990-02-16 JP JP1427890U patent/JP2514571Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008298279A (en) * | 2007-06-04 | 2008-12-11 | Toshiba Corp | Electronic equipment and hinge device used for the electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2514571Y2 (en) | 1996-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |