18405476. DOHERTY AMPLIFIER simplified abstract (Murata Manufacturing Co., Ltd.)
Contents
DOHERTY AMPLIFIER
Organization Name
Murata Manufacturing Co., Ltd.
Inventor(s)
DOHERTY AMPLIFIER - A simplified explanation of the abstract
This abstract first appeared for US patent application 18405476 titled 'DOHERTY AMPLIFIER
The abstract describes a Doherty amplifier comprising a carrier amplifier with one or more stages, including a first amplifier with a first bias current, and a peak amplifier with two or more stages, including a second amplifier with a smaller second bias current. A first resistor is inserted in series into the power supply path to the second amplifier.
- The Doherty amplifier includes a carrier amplifier and a peak amplifier formed on a semiconductor substrate.
- The carrier amplifier consists of one or more stages, with a first amplifier receiving a first bias current.
- The peak amplifier consists of two or more stages, with a second amplifier receiving a smaller second bias current.
- A first resistor is placed in series in the power supply path to the second amplifier.
Potential Applications: - Wireless communication systems - Radar systems - Satellite communication systems
Problems Solved: - Improving efficiency in power amplifiers - Reducing power consumption in communication systems
Benefits: - Enhanced power efficiency - Improved signal quality - Reduced power consumption
Commercial Applications: Title: "Efficient Doherty Amplifiers for Wireless Communication Systems" This technology can be used in the development of advanced wireless communication systems, leading to more efficient and reliable signal transmission. The market implications include increased demand for high-performance amplifiers in the telecommunications industry.
Questions about Doherty Amplifiers: 1. How do Doherty amplifiers improve power efficiency in communication systems? Doherty amplifiers improve power efficiency by dynamically adjusting the bias currents in the carrier and peak amplifiers to match the input signal, reducing power consumption during operation.
2. What are the key differences between the carrier and peak amplifiers in a Doherty amplifier? The carrier amplifier typically operates at a constant power level, while the peak amplifier handles the signal peaks, ensuring efficient power usage and signal quality.
Original Abstract Submitted
A Doherty amplifier includes: a carrier amplifier that is formed on a semiconductor substrate and that includes amplifiers in one or more stages including a first amplifier in one stage to which a first bias current is inputted; a peak amplifier that is formed on the semiconductor substrate and that includes amplifiers in two or more stages including a second amplifier to which a second bias current smaller than the first bias current is inputted; and a first resistor that is inserted in series into a power supply path to the second amplifier.
