Wideband amplifier
AssigneeSony Corporation
InventorsHisao Sakurai, Seiichi Nishiyama
Life of this patent
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Abstract
A wideband amplifier is provided having a plurality of transistors, the bases of which are commonly grounded, a signal source for generating input signals, an input terminal connected to the signal source, a drive amplifier connected to the input terminal, a plurality of input resistors connected to the drive amplifier and to respective emitters of the transistors, a plurality of load resistors connected to respective collectors of the transistors, and an output terminal connected to a junction where the collector and one of the load resistors are connected with each other.
Claims14
1. A wideband amplifier, comprising:
- a plurality of transistors, bases of which are commonly grounded;
- a signal source means for generating input signals;
- an input terminal connected to said signal source means;
- a drive amplifier having an input connected to said input terminal;
- a plurality of input resistors connecting an output of said drive amplifier to respective emitters of said plurality of transistors such that said emitters can receive input signals from said signal source;
- a plurality of load resistors connected to respective collectors of said plurality of transistors;
- and
- an output terminal connected to a junction where the collector of one of said transistors and one of said plurality of load resistors are connected with each other.
An amplifier according to claim I wherein the load resistors connect collectors of the transistors to a voltage supply.
An amplifier according to claim I wherein the signal source means connects to ground through a voltage source.
A wideband amplifier, comprising:
- at least first and second transistors, bases of which are commonly connected to a first voltage supply;
- a signal source means for generating input signals;
- a drive amplifier connecting the signal source means to first and second input resistors connected to respective emitters of said first and second transistors;
- first and second load resistors connected to respective collectors of said first and second transistors;
- an output terminal connected to a junction where the collector of the second transistor and its respective second load resistor are connected with each other;
- and
- the collectors of the first and second transistors being connected through the first and second resistors to a second voltage supply.
Dependencies are inferred from the claim text.