JPH0221585U - - Google Patents
Info
- Publication number
- JPH0221585U JPH0221585U JP9989188U JP9989188U JPH0221585U JP H0221585 U JPH0221585 U JP H0221585U JP 9989188 U JP9989188 U JP 9989188U JP 9989188 U JP9989188 U JP 9989188U JP H0221585 U JPH0221585 U JP H0221585U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- gain control
- intermediate frequency
- section
- control 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 description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
第1図は本考案の実施例を示すブロツク図、第
2図は従来のパルス受信装置を示すブロツク図で
ある。
1′……パルス受信装置、3……周波数変換部
、4……中間周波増幅部、5……復調部、6……
利得制御回路、7……第二中間周波増幅部、8…
…第二復調部、9……第二利得制御部、10……
比較回路。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional pulse receiving device. 1'... Pulse receiver, 3... Frequency conversion section, 4... Intermediate frequency amplification section, 5... Demodulation section, 6...
Gain control circuit, 7... Second intermediate frequency amplification section, 8...
...Second demodulation section, 9...Second gain control section, 10...
Comparison circuit.
Claims (1)
号に変換する周波数変換部と、前記周波数変換部
からの中間周波信号を増幅する中間周波増幅部と
、前記中間周波増幅部からの中間周波信号からパ
ルス信号を得る復調部と、前記復調部から得られ
るパルス信号のレベルに応じた信号を基に利得制
御信号を形成し出力する利得制御回路とを備え、
前記利得制御回路は、この利得制御信号を少なく
とも前記中間周波増幅回路に供給して中間周波増
幅回路の増幅度を制御する回路構成とされたパル
ス受信装置において、前記周波数変換部からの中
間周波信号を減衰させて対数増幅する第2中間周
波増幅部と、前記第2中間周波増幅部からの出力
信号からパルス信号を得る第2復調部と、前記第
2復調部からのパルス信号のレベルに応じた信号
を対数信号から直線信号に変換し、これを基に第
2利得制御信号を形成し出力する第2利得制御部
と、前記利得制御回路からの利得制御信号と前記
第2利得制御信号とを取り込んで比較し、前記利
得制御回路からの利得制御信号が第2利得制御信
号より小さいときにのみ前記中間周波増幅部の増
幅度を小さくする利得制御信号を出力し、かつこ
れ以外には利得制御信号を出力する比較回路とか
ら構成したことを特徴とするパルス受信装置。 a frequency conversion section that receives a high frequency encoded pulse signal and converts it into an intermediate frequency signal; an intermediate frequency amplification section that amplifies the intermediate frequency signal from the frequency conversion section; and a pulse from the intermediate frequency signal from the intermediate frequency amplification section. comprising a demodulation section that obtains a signal, and a gain control circuit that forms and outputs a gain control signal based on a signal corresponding to the level of the pulse signal obtained from the demodulation section,
In the pulse receiving device, the gain control circuit supplies at least the gain control signal to the intermediate frequency amplification circuit to control the amplification degree of the intermediate frequency amplification circuit. a second intermediate frequency amplification section that attenuates and logarithmically amplifies the output signal; a second demodulation section that obtains a pulse signal from the output signal from the second intermediate frequency amplification section; a second gain control section that converts the obtained signal from a logarithmic signal to a linear signal, and forms and outputs a second gain control signal based on this, and a gain control signal from the gain control circuit and the second gain control signal; and outputs a gain control signal that reduces the amplification degree of the intermediate frequency amplification section only when the gain control signal from the gain control circuit is smaller than the second gain control signal, and otherwise 1. A pulse receiving device comprising a comparison circuit that outputs a control signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9989188U JPH0221585U (en) | 1988-07-29 | 1988-07-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9989188U JPH0221585U (en) | 1988-07-29 | 1988-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0221585U true JPH0221585U (en) | 1990-02-13 |
Family
ID=31327468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9989188U Pending JPH0221585U (en) | 1988-07-29 | 1988-07-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0221585U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05126945A (en) * | 1991-11-05 | 1993-05-25 | Sharp Corp | Data transmitter and interrogator used therefor |
-
1988
- 1988-07-29 JP JP9989188U patent/JPH0221585U/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05126945A (en) * | 1991-11-05 | 1993-05-25 | Sharp Corp | Data transmitter and interrogator used therefor |