JPS5612130A - Synthesizer type receiver - Google Patents
Synthesizer type receiverInfo
- Publication number
- JPS5612130A JPS5612130A JP8773879A JP8773879A JPS5612130A JP S5612130 A JPS5612130 A JP S5612130A JP 8773879 A JP8773879 A JP 8773879A JP 8773879 A JP8773879 A JP 8773879A JP S5612130 A JPS5612130 A JP S5612130A
- Authority
- JP
- Japan
- Prior art keywords
- output
- frequency
- pll circuit
- dividing
- oscillator
- 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
Abstract
PURPOSE: To constitute a receiver of superior frequency stability whose reception frequency is variable at random intervals by frequency-dividing the output of the 2nd PLL circuit and then by supplying a mixture of the division output and the output of the 1st PLL circuit to the 1st PLL circuit.
CONSTITUTION: An arrival signal from antenna 1 as converted into an intermediate frequency by frequency mixer 4 with the output of oscillator 5 of the 1st PLL circuit 28. The output of oscillator 11 of the 2nd PLL circuit 29, on the other hand, is divided by M at frequency divider 10, the output of which is supplied to via low- pass filter 9 and mixed with part of the output of oscillator 5 by frequency mixer 8, whose output is frequency-divided by programmable counter 18 and phase-compared to the output of reference frequency generating circuit 17 by phase comparator 20, thereby applying the output to varactors 6 and 3. Dividing-ratio setting circuits 21 and 25 setting dividing ratios N and n of the 1st and 2nd programmable counters 18 and 24 are brought under the coupling control of dividing-ratio arithmetic circuit 22.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8773879A JPS5612130A (en) | 1979-07-10 | 1979-07-10 | Synthesizer type receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8773879A JPS5612130A (en) | 1979-07-10 | 1979-07-10 | Synthesizer type receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5612130A true JPS5612130A (en) | 1981-02-06 |
JPS619771B2 JPS619771B2 (en) | 1986-03-26 |
Family
ID=13923258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8773879A Granted JPS5612130A (en) | 1979-07-10 | 1979-07-10 | Synthesizer type receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5612130A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6359223A (en) * | 1986-08-29 | 1988-03-15 | Kenwood Corp | Local oscillator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US588732A (en) * | 1897-08-24 | Benjamin perry rice |
-
1979
- 1979-07-10 JP JP8773879A patent/JPS5612130A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US588732A (en) * | 1897-08-24 | Benjamin perry rice |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6359223A (en) * | 1986-08-29 | 1988-03-15 | Kenwood Corp | Local oscillator |
Also Published As
Publication number | Publication date |
---|---|
JPS619771B2 (en) | 1986-03-26 |
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