JPS5619213A - Band pass type differential amplifying circuit - Google Patents
Band pass type differential amplifying circuitInfo
- Publication number
- JPS5619213A JPS5619213A JP9404679A JP9404679A JPS5619213A JP S5619213 A JPS5619213 A JP S5619213A JP 9404679 A JP9404679 A JP 9404679A JP 9404679 A JP9404679 A JP 9404679A JP S5619213 A JPS5619213 A JP S5619213A
- Authority
- JP
- Japan
- Prior art keywords
- beta
- resistance
- amplifying circuit
- emitters
- input terminal
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
- H03F3/45197—Pl types
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
- H03F3/45098—PI types
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Networks Using Active Elements (AREA)
Abstract
PURPOSE:To facilitate an easy characteristic control at the high frequency region with a simple constitution, by connecting the resistance between both emitters of a pair of transistors and then connecting the distribution constant lines of the same length and with one end opened each to both emitters. CONSTITUTION:The central frequency of the pass band of the amplifying circuit is set to f0, and the same value is secured between length l of distribution constant lines 6 and 7 and characteristic impedance Z0. And the earth current amplification factor of the transistor is denoted as beta along with the internal base resistance as rb, the internal emitter resistance as re, the driving source impedance of the circuit which drives input terminal 1 as ZS, emitter resistance value as RE and the collector resistance value as RL respectively. And the transmission function ¦H(f)¦ reaching output terminal 2 is shown by equation [I] when voltage V1(f) is applied to the input terminal, and the maximum gain ¦H(f0)¦=¦RL/[Re+(rb+ZS)/beta]¦ is obtained with f=f0 in case beta is sufficient. As a result, the characteristic control can be facilitated at the high frequency region.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9404679A JPS5619213A (en) | 1979-07-24 | 1979-07-24 | Band pass type differential amplifying circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9404679A JPS5619213A (en) | 1979-07-24 | 1979-07-24 | Band pass type differential amplifying circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5619213A true JPS5619213A (en) | 1981-02-23 |
JPS6154287B2 JPS6154287B2 (en) | 1986-11-21 |
Family
ID=14099613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9404679A Granted JPS5619213A (en) | 1979-07-24 | 1979-07-24 | Band pass type differential amplifying circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5619213A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178611A (en) * | 1982-04-12 | 1983-10-19 | Nippon Telegr & Teleph Corp <Ntt> | Tuning amplifier |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007174442A (en) * | 2005-12-23 | 2007-07-05 | Toyota Central Res & Dev Lab Inc | Differential amplifier |
-
1979
- 1979-07-24 JP JP9404679A patent/JPS5619213A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58178611A (en) * | 1982-04-12 | 1983-10-19 | Nippon Telegr & Teleph Corp <Ntt> | Tuning amplifier |
JPS6261167B2 (en) * | 1982-04-12 | 1987-12-19 | Nippon Telegraph & Telephone |
Also Published As
Publication number | Publication date |
---|---|
JPS6154287B2 (en) | 1986-11-21 |
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