GB608074A - Tunable band-pass filter - Google Patents
Tunable band-pass filterInfo
- Publication number
- GB608074A GB608074A GB470446A GB470446A GB608074A GB 608074 A GB608074 A GB 608074A GB 470446 A GB470446 A GB 470446A GB 470446 A GB470446 A GB 470446A GB 608074 A GB608074 A GB 608074A
- Authority
- GB
- United Kingdom
- Prior art keywords
- variable
- band
- tuned
- pass filter
- variation
- 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
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1775—Parallel LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1791—Combined LC in shunt or branch path
Landscapes
- Filters And Equalizers (AREA)
Abstract
608,074. Impedance networks. TRIGGS, W. W. (Farnsworth Television & Radio Corporation). Feb. 14, 1946, No.4704. Drawings to Specification. [Class 40 (viii)] In a band-pass filter suitable for a radioreceiver, the band-width remains constant as the filter is tuned. The filter comprises two tuned circuits inductively coupled together, one of them being tuned by means of variable capacity shunting a fixed capacity, the other by means of a variable inductance shunting. the fixed coupling inductance. The variable elements are gauged so that the effect on bandwidth of variation in the coefficient of coupling neutralizes that of variation in mid-band frequency. The tuning elements may be varied by means of uni-controlled selector switches, Fig. 1 (not shown), or may be continuously variable, Fig. 2 (not shown).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB470446A GB608074A (en) | 1946-02-14 | 1946-02-14 | Tunable band-pass filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB470446A GB608074A (en) | 1946-02-14 | 1946-02-14 | Tunable band-pass filter |
Publications (1)
Publication Number | Publication Date |
---|---|
GB608074A true GB608074A (en) | 1948-09-09 |
Family
ID=9782226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB470446A Expired GB608074A (en) | 1946-02-14 | 1946-02-14 | Tunable band-pass filter |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB608074A (en) |
-
1946
- 1946-02-14 GB GB470446A patent/GB608074A/en not_active Expired
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