JPH02101635U - - Google Patents
Info
- Publication number
- JPH02101635U JPH02101635U JP1104889U JP1104889U JPH02101635U JP H02101635 U JPH02101635 U JP H02101635U JP 1104889 U JP1104889 U JP 1104889U JP 1104889 U JP1104889 U JP 1104889U JP H02101635 U JPH02101635 U JP H02101635U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- crystal resonator
- section
- modulated wave
- wave 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
- 239000013078 crystal Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Transmitters (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
従来例の回路図、第３図は得るべき被ＦＭ変調波
信号の周波数スペクトラムである。
１……データ入力端子、２……被ＦＭ変調波信
号出力端子、１０……ＦＭ変調部、１１……固定
発振部、１２……ミキサ、１３……アンプ、Ｘ１
，Ｘ２……水晶振動子、Ｄ１……バラクタダイオ
ード、Ｌ１，Ｌ２……インダクタンス、Ｑ１〜Ｑ
４……トランジスタ。
FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a circuit diagram of a conventional example, and FIG. 3 is a frequency spectrum of an FM modulated wave signal to be obtained. 1... Data input terminal, 2... FM modulated wave signal output terminal, 10... FM modulation section, 11... Fixed oscillation section, 12... Mixer, 13... Amplifier, X 1
, X 2 ... Crystal resonator, D 1 ... Varactor diode, L 1 , L 2 ... Inductance, Q 1 to Q
4 ...transistor.
Claims (1)
られ、該水晶振動子の固有振動周波数を入力信号
にてＦＭ変調するＦＭ変調部と、 上記水晶振動子の固有振動周波数と得るべき被
ＦＭ変調波信号の搬送波周波数との差の周波数を
固有振動周波数とする水晶振動子を設けられた固
定発振部と、 上記ＦＭ変調部の出力と上記固定発振部の出力
とを混合して上記搬送波周波数の被ＦＭ変調波信
号を得るミキサとを設けてなる高周波回路。[Claims for Utility Model Registration] An FM modulation section that is provided with a crystal resonator having a predetermined natural vibration frequency and modulates the natural vibration frequency of the crystal resonator using an input signal; a fixed oscillation section provided with a crystal resonator whose natural oscillation frequency is the difference between the frequency and the carrier frequency of the FM modulated wave signal to be obtained; and an output of the FM modulation section and an output of the fixed oscillation section. A high frequency circuit comprising: a mixer for mixing to obtain an FM modulated wave signal having the carrier frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1104889U JPH02101635U (en) | 1989-02-01 | 1989-02-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1104889U JPH02101635U (en) | 1989-02-01 | 1989-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02101635U true JPH02101635U (en) | 1990-08-13 |
Family
ID=31219255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1104889U Pending JPH02101635U (en) | 1989-02-01 | 1989-02-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02101635U (en) |
-
1989
- 1989-02-01 JP JP1104889U patent/JPH02101635U/ja active Pending
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