JPH024338U - - Google Patents
Info
- Publication number
- JPH024338U JPH024338U JP8119788U JP8119788U JPH024338U JP H024338 U JPH024338 U JP H024338U JP 8119788 U JP8119788 U JP 8119788U JP 8119788 U JP8119788 U JP 8119788U JP H024338 U JPH024338 U JP H024338U
- Authority
- JP
- Japan
- Prior art keywords
- frequency mixer
- local oscillators
- tester
- reference signal
- foldback
- 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
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Description
第１図は本考案の折返し試験器の一実施例のブ
ロツク回路図、第２図は従来構成の折返し試験器
のブロツク回路図である。
１……入力端子、２……周波数混合器、３……
帯域通過ろ波器、４……周波数混合器、５……帯
域通過ろ波器、６……出力端子、７……第１局部
発振器、８……第２局部発振器、９……基準信号
発振器、１０，１１……電圧制御発振器（ＶＣＯ
）、１２，１３……電圧制御形水晶発振器（ＶＣ
ＸＯ）、１４，１５……基準信号発振器。
FIG. 1 is a block circuit diagram of an embodiment of a folding tester according to the present invention, and FIG. 2 is a block circuit diagram of a folding tester having a conventional configuration. 1...Input terminal, 2...Frequency mixer, 3...
Band pass filter, 4... Frequency mixer, 5... Band pass filter, 6... Output terminal, 7... First local oscillator, 8... Second local oscillator, 9... Reference signal oscillator , 10, 11... Voltage controlled oscillator (VCO
), 12, 13... Voltage controlled crystal oscillator (VC
XO), 14, 15...Reference signal oscillator.
Claims (1)
、かつ各周波数混合器に対応する第１及び第２の
局部発振器を備えたダブルコンバージヨン方式の
折返し試験器において、前記２つの局部発振器の
基準信号発振器を１つの基準信号発振器で共用し
たことを特徴とする折返し試験器。 In a double-conversion type folding tester comprising a frequency mixer and a bandpass filter in two stages and having first and second local oscillators corresponding to each frequency mixer, the two local oscillators A foldback tester characterized in that one reference signal oscillator is used in common.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8119788U JPH024338U (en) | 1988-06-20 | 1988-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8119788U JPH024338U (en) | 1988-06-20 | 1988-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH024338U true JPH024338U (en) | 1990-01-11 |
Family
ID=31305991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8119788U Pending JPH024338U (en) | 1988-06-20 | 1988-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH024338U (en) |
-
1988
- 1988-06-20 JP JP8119788U patent/JPH024338U/ja active Pending