JPH0314852U - - Google Patents
Info
- Publication number
- JPH0314852U JPH0314852U JP7443189U JP7443189U JPH0314852U JP H0314852 U JPH0314852 U JP H0314852U JP 7443189 U JP7443189 U JP 7443189U JP 7443189 U JP7443189 U JP 7443189U JP H0314852 U JPH0314852 U JP H0314852U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- output
- phase
- vco
- section
- 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
- 230000003321 amplification Effects 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
第１図はこの考案の一実施例を示す構成図、第
２図は第１図の第２局部発振器の一構成例を示す
ブロツク図、第３図は第１図の第１局部発振器の
一構成例を示すブロツク図、第４図は第１図の変
調部の一構成例を示すブロツク図。
１……第２局部発振器、２……第１局部発振器
、３……ミキサ、４……ＰＳＫ部、５……変調部
、１０……水晶発振器（基準周波数ｆ）、１４…
…第１のＶＣＯ、２３……第２のＶＣＯ、５２…
…第３のＶＣＯ。なお、各図中同一符号は同一ま
たは相当部分を示すものとする。
FIG. 1 is a block diagram showing one embodiment of this invention, FIG. 2 is a block diagram showing an example of the structure of the second local oscillator in FIG. 1, and FIG. 3 is a block diagram showing an example of the first local oscillator in FIG. FIG. 4 is a block diagram showing an example of the structure of the modulation section of FIG. 1. FIG. DESCRIPTION OF SYMBOLS 1... Second local oscillator, 2... First local oscillator, 3... Mixer, 4... PSK section, 5... Modulation section, 10... Crystal oscillator (reference frequency f), 14...
...First VCO, 23...Second VCO, 52...
...Third VCO. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
ツクループ内で第１のＶＣＯ（電圧制御発振器）
を発振させてＮｆ／ＬＭの周波数の信号を出力す
る第２局部発振器（但しＬ，Ｍはそれぞれ所定の
整数、Ｎは所定範囲内で任意に選定できる整数と
する）、 ｆによつて制御される第２の位相ロツクループ
内で第２のＶＣＯを発振させてＡｆの周波数の信
号を出力する第１局部発振器（但しＡは所定の整
数とする）、 この第１局部発振器の出力周波数と上記第２局
部発振器の出力周波数との和の周波数を生成する
ミキサ、 ｆ／Ｂの搬送波周波数を信号によりＰＳＫ（ｐ
ｈａｓｅ ｓｈｉｆｔ ｋｅｙｉｎｇ）変調する
ＰＳＫ部、 第３のＶＣＯの出力周波数と上記ミキサの出力
周波数との差の周波数を抽出し、この差の周波数
の位相が上記ＰＳＫ部の出力の位相に一致するよ
う上記第３のＶＣＯの発振位相をフイードバツク
制御する第３の位相ロツクループを含む変調部、 この変調部の出力を電力増幅する電力増幅部、 を備えたＤＣＰ装置用送信機。[Claims for Utility Model Registration] A first VCO (voltage controlled oscillator) within a first phase lock loop controlled by a reference frequency f.
A second local oscillator that oscillates and outputs a signal with a frequency of Nf/LM (where L and M are each predetermined integers, and N is an integer that can be arbitrarily selected within a predetermined range), which is controlled by f. A first local oscillator (where A is a predetermined integer) that oscillates the second VCO in a second phase-locked loop to output a signal with a frequency of Af; A mixer that generates a frequency that is the sum of the output frequencies of two local oscillators, and a signal that converts the carrier frequency of f/B into PSK (p
a PSK section that modulates (has shift keying) extracts the frequency difference between the output frequency of the third VCO and the output frequency of the mixer, and modulates the frequency so that the phase of this difference frequency matches the phase of the output of the PSK section. A transmitter for a DCP device, comprising: a modulation section including a third phase lock loop that feedback-controls the oscillation phase of a third VCO; and a power amplification section that amplifies the power of the output of the modulation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989074431U JPH0644203Y2 (en) | 1989-06-27 | 1989-06-27 | Transmitter for DCP device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989074431U JPH0644203Y2 (en) | 1989-06-27 | 1989-06-27 | Transmitter for DCP device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0314852U true JPH0314852U (en) | 1991-02-14 |
| JPH0644203Y2 JPH0644203Y2 (en) | 1994-11-14 |
Family
ID=31614116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989074431U Expired - Lifetime JPH0644203Y2 (en) | 1989-06-27 | 1989-06-27 | Transmitter for DCP device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644203Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6381549U (en) * | 1986-11-17 | 1988-05-28 | ||
| JPS63260247A (en) * | 1987-04-16 | 1988-10-27 | Nec Corp | Modulator |
-
1989
- 1989-06-27 JP JP1989074431U patent/JPH0644203Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6381549U (en) * | 1986-11-17 | 1988-05-28 | ||
| JPS63260247A (en) * | 1987-04-16 | 1988-10-27 | Nec Corp | Modulator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644203Y2 (en) | 1994-11-14 |
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