Back to results
US 7,804,362 B2Granted
Distributed amplifier with negative feedback
AssigneeMicrosemi Corporation
InventorHung Van Nguyen
Life of this patent
Estimating the term…
Abstract
A distributed amplifier may include an input transmission line for receiving on an input end an input signal, and an output transmission line for outputting on an output end an output signal. A plurality of amplifier stages may be coupled between intermediate positions on the input and output lines. Feedback impedance may negatively feed back a signal on the output end of the output line to a second end of the input line spaced from the first end of the input line.
Claims20
A distributed amplifier comprising:
- an input transmission line for receiving on a first end an input signal;
- an output transmission line for outputting on a first end an output signal;
- an output line termination impedance coupled to a second end of the output transmission line opposite the first end of the output transmission line;
- a feedback impedance directly coupling from the first end of the output transmission line to a second end of the input transmission line spaced from the first end of the input transmission line, the feedback impedance arranged to negatively feed back a signal on the output transmission line to the second end of the input transmission line;
- and
- a plurality of amplifier stages each including an active device having a control terminal and two current-carrying terminals, with the control terminal coupled to the input transmission line at an intermediate position between the first and second ends of the input transmission line, and one current-carrying terminal coupled to the output transmission line at an intermediate position between the first and second ends of the output transmission line.
3 more elements
A method of amplifying a signal comprising:
- inputting an input signal on a first end of an input transmission line;
- transmitting the input signal along the input transmission line between the first end and a second end opposite the first end;
- amplifying the input signal occurring at a plurality of distributed intermediate positions on the input transmission line between the first and second ends of the input transmission line;
- applying the signal amplified at each intermediate position on the input transmission line to a corresponding intermediate position on an output transmission line between first and second ends of the output transmission line;
- terminating the first end of the output transmission line with a termination impedance;
- outputting the signal occurring on the second end of the output transmission line;
- and
- negatively feeding back the signal occurring on the second end of the output transmission line directly to the second end of the input transmission line.
5 more elements
Dependencies are inferred from the claim text.