GB1215940A - Method and means for screening and de-coupling electronic circuits - Google Patents
Method and means for screening and de-coupling electronic circuitsInfo
- Publication number
- GB1215940A GB1215940A GB5451567A GB5451567A GB1215940A GB 1215940 A GB1215940 A GB 1215940A GB 5451567 A GB5451567 A GB 5451567A GB 5451567 A GB5451567 A GB 5451567A GB 1215940 A GB1215940 A GB 1215940A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- block
- input
- wall
- base
- 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
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/60—Amplifiers in which coupling networks have distributed constants, e.g. with waveguide resonators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Microwave Amplifiers (AREA)
Abstract
1,215,940. Electric component assemblies. COMITATO NAZIONALE PER L'ENERGIA NUCLEARE. 30 Nov., 1967 [1 Dec., 1966], No. 64515/67. Heading H1R. Relates to an arrangement for shielding and decoupling electronic circuit assemblies operating at high frequencies e.g. 408 Mc/s. In an amplifier embodiment described a resonant circuit 8 (Fig. 2b) of an input filter and resonant circuits 9, 10 of an output filter respectively including wire loops 81, 9<SP>1</SP>, 10<SP>1</SP> tuned by capacitors 8<SP>11</SP>, 9<SP>11</SP>, 10<SP>11</SP>, are mounted on a base-plate 11 within two parallel channels formed by a member 13 (Fig. 2a) and a common wall 22, joined to the plate 11, a slot in the wall 22 straddling a metal plate 23 on the base-plate as shown in Fig. 3. The channels function as waveguides for interference frequencies. Shield plates 24, 25 are attached one to each face of the wall 22, to prevent coupling between lead wires of active components. For instance, the end of a “ wave coaxial line 29 which is connected to a transistor base electrode (15) (Fig. 1, not shown) is located in a hole 27 in the block 23 mid way between the two shields while the end of a “ wave coaxial line 28 connected to the emitter of a second transistor is located in a hole 26 outside the shields toward the input stage. Holes are also provided in the block 23 to receive the transistors and resistors. A coaxial input signal lead 37 is fastened to the block and connected to the input resonant circuit 8.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT4325566 | 1966-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1215940A true GB1215940A (en) | 1970-12-16 |
Family
ID=11254810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5451567A Expired GB1215940A (en) | 1966-12-01 | 1967-11-30 | Method and means for screening and de-coupling electronic circuits |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1591076A1 (en) |
FR (1) | FR1555758A (en) |
GB (1) | GB1215940A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3213406A1 (en) * | 1982-04-10 | 1983-10-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | NARROW BAND AMPLIFIER, IN PARTICULAR TELEVISION INTERMEDIATE FREQUENCY AMPLIFIER |
-
1967
- 1967-11-28 DE DE19671591076 patent/DE1591076A1/en active Pending
- 1967-11-30 FR FR1555758D patent/FR1555758A/fr not_active Expired
- 1967-11-30 GB GB5451567A patent/GB1215940A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1591076A1 (en) | 1970-08-20 |
FR1555758A (en) | 1969-01-31 |
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