GB381048A - Improvements in or relating to receivers for ultra-short waves - Google Patents
Improvements in or relating to receivers for ultra-short wavesInfo
- Publication number
- GB381048A GB381048A GB1371/32A GB137132A GB381048A GB 381048 A GB381048 A GB 381048A GB 1371/32 A GB1371/32 A GB 1371/32A GB 137132 A GB137132 A GB 137132A GB 381048 A GB381048 A GB 381048A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- ultra
- kilocycles
- jan
- class
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
Abstract
381,048. Valve amplifying circuits. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Jan. 16, 1932, No. 1371. Convention date, Jan. 31, 1931. [Class 40 (v).] A superheterodyne receiver for ultra-short waves is characterized by the use of an intermediate-frequency amplifier fitted with bandpass circuits, as shown in Fig. 3,, to accept a range of frequencies several times the width of the signal side-bands. For instance if S, Fig. 2, is the width of the modulated carrierwave, say 10 Kilocycles, the intermediate-frequency amplifier is designed to cover a frequency of 100 Kilocycles represented by the rectangle B. This avoids the necessity of accurately stabilizing the frequency of the local heterodyne oscillator, though the latter is approximately stabilized by being mainsdriven and by'deriving the operating voltages from a glow-discharge potential divider of the type described in Specification 313,075, [Class 40 (v), Wireless signalling &c.].
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE381048X | 1931-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB381048A true GB381048A (en) | 1932-09-29 |
Family
ID=6350882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1371/32A Expired GB381048A (en) | 1931-01-31 | 1932-01-16 | Improvements in or relating to receivers for ultra-short waves |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR381048A (en) |
| GB (1) | GB381048A (en) |
-
1907
- 1907-08-21 FR FR381048D patent/FR381048A/en not_active Expired
-
1932
- 1932-01-16 GB GB1371/32A patent/GB381048A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR381048A (en) | 1907-12-26 |
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