JPS6448505A - Fet load amplifier circuit - Google Patents
Fet load amplifier circuitInfo
- Publication number
- JPS6448505A JPS6448505A JP20549187A JP20549187A JPS6448505A JP S6448505 A JPS6448505 A JP S6448505A JP 20549187 A JP20549187 A JP 20549187A JP 20549187 A JP20549187 A JP 20549187A JP S6448505 A JPS6448505 A JP S6448505A
- Authority
- JP
- Japan
- Prior art keywords
- load
- amplifier circuit
- fetj3
- resistor
- operating point
- 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.)
- Pending
Links
Landscapes
- Microwave Amplifiers (AREA)
- Amplifiers (AREA)
Abstract
PURPOSE:To control the gain of a low frequency side of a band through the proper selection of a resistor by connecting a resistor to a gate of a load FET so as to stabilizing the operating point of the operating FET. CONSTITUTION:The input side is matched by a matching circuit 21 and the output is inputted to a 1st stage amplifier circuit 22. The operating point of the operation FETJ1 of the stage is decided by a load resistor RL. Moreover, the signal is amplified by an output stage amplifier circuit 23 and an FETJ3 is used for a load to obtain a higher output than the case with a resistive load. Moreover, resistors R1, R2 are connected to the gate of the load FETJ3. Since the gate potential of the load FETJ3 is fixed, the operating point of the operation FETJ2 is stabilized. Furthermore, the low frequency gain is controlled to some degree without using a DC cut-off capacitor feedback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20549187A JPS6448505A (en) | 1987-08-18 | 1987-08-18 | Fet load amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20549187A JPS6448505A (en) | 1987-08-18 | 1987-08-18 | Fet load amplifier circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6448505A true JPS6448505A (en) | 1989-02-23 |
Family
ID=16507735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20549187A Pending JPS6448505A (en) | 1987-08-18 | 1987-08-18 | Fet load amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6448505A (en) |
-
1987
- 1987-08-18 JP JP20549187A patent/JPS6448505A/en active Pending
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