GB1251706A - - Google Patents
Info
- Publication number
- GB1251706A GB1251706A GB1251706DA GB1251706A GB 1251706 A GB1251706 A GB 1251706A GB 1251706D A GB1251706D A GB 1251706DA GB 1251706 A GB1251706 A GB 1251706A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- module
- transistors
- capacitor
- coupled
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/12—Transference of modulation from one carrier to another, e.g. frequency-changing by means of semiconductor devices having more than two electrodes
Abstract
1,251,706. Transistor superheterodyne mixing circuits. RCA CORPORATION. 9 May, 1969 [16 May, 1968], No. 23719/69. Heading H3T. The two transistors of a cascode mixer for a superheterodyne receiver are located in different modules and are coupled by a transmission line. As shown, one module includes the R.F. amplifier, local oscillator and the common emitter stage 24 of the cascode circuit and the other transistor 26 is located in the I.F. module, the two modules being coupled by a coaxial cable 68 matched at the R.F. module end by a resistor and capacitor 70, 72 or, as in Fig. 6, not shown, by the load resistor of transistor 24. In the latter arrangement the two transistors are connected to the power supply in parallel. Feedback via a capacitor between the output collector and input have to improve heat rejection.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US72974768A | 1968-05-16 | 1968-05-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1251706A true GB1251706A (en) | 1971-10-27 |
Family
ID=24932440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1251706D Expired GB1251706A (en) | 1968-05-16 | 1969-05-09 |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5149164B1 (en) |
AT (1) | AT329637B (en) |
BE (1) | BE733103A (en) |
DE (1) | DE1924680B2 (en) |
ES (1) | ES367245A1 (en) |
FR (1) | FR2008640A1 (en) |
GB (1) | GB1251706A (en) |
MY (1) | MY7300415A (en) |
NL (1) | NL153391B (en) |
SE (1) | SE403015B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2205777B1 (en) * | 1972-11-02 | 1977-03-11 | Sony Corp | |
DE3045676A1 (en) * | 1980-01-05 | 1981-07-09 | Draftex Development AG, 6300 Zug | SEALING STRIP |
DE3002612C2 (en) * | 1980-01-25 | 1982-09-09 | Robert Bosch Gmbh, 7000 Stuttgart | Elastic sealing element for vehicle headlights |
DE3401863C2 (en) * | 1984-01-20 | 1986-01-30 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Band-dependent switchable VHF mixer circuitry |
DE3703408C1 (en) * | 1987-02-05 | 1988-07-14 | Philips Patentverwaltung Gmbh, 2000 Hamburg, De |
-
1969
- 1969-05-07 FR FR6914613A patent/FR2008640A1/fr not_active Withdrawn
- 1969-05-08 SE SE652669A patent/SE403015B/en unknown
- 1969-05-09 GB GB1251706D patent/GB1251706A/en not_active Expired
- 1969-05-14 DE DE19691924680 patent/DE1924680B2/en not_active Ceased
- 1969-05-14 NL NL6907437A patent/NL153391B/en not_active IP Right Cessation
- 1969-05-14 ES ES367245A patent/ES367245A1/en not_active Expired
- 1969-05-14 BE BE733103D patent/BE733103A/xx not_active IP Right Cessation
- 1969-05-15 JP JP3767669A patent/JPS5149164B1/ja active Pending
- 1969-05-16 AT AT467269A patent/AT329637B/en not_active IP Right Cessation
-
1973
- 1973-12-30 MY MY7300415A patent/MY7300415A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2008640A1 (en) | 1970-01-23 |
MY7300415A (en) | 1973-12-31 |
DE1924680A1 (en) | 1969-11-27 |
SE403015B (en) | 1978-07-24 |
BE733103A (en) | 1969-10-16 |
AT329637B (en) | 1976-05-25 |
ES367245A1 (en) | 1971-04-01 |
NL6907437A (en) | 1969-11-18 |
JPS5149164B1 (en) | 1976-12-24 |
DE1924680B2 (en) | 1973-06-07 |
NL153391B (en) | 1977-05-16 |
ATA467269A (en) | 1975-08-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |