18243729. DOHERTY AMPLIFIER simplified abstract (Mitsubishi Electric Corporation)
Contents
DOHERTY AMPLIFIER
Organization Name
Mitsubishi Electric Corporation
Inventor(s)
Yuji Komatsuzaki of Tokyo (JP)
DOHERTY AMPLIFIER - A simplified explanation of the abstract
This abstract first appeared for US patent application 18243729 titled 'DOHERTY AMPLIFIER
Simplified Explanation
The abstract describes a Doherty amplifier, which is a type of power amplifier used in wireless communication systems. The amplifier includes several components such as filter circuits and amplifiers to process input signals in different frequency bands.
- The first filter circuit attenuates an input signal in a specific frequency band and allows passage of another input signal in a different frequency band.
- The second filter circuit attenuates input signals in both frequency bands.
- The first amplifier acts as an auxiliary amplifier when receiving the attenuated input signal from the first filter circuit and as a main amplifier when receiving the input signal from the second filter circuit.
- The second amplifier acts as the main amplifier when receiving an attenuated input signal from the second filter circuit and as the auxiliary amplifier when receiving an attenuated input signal from the first filter circuit.
Potential applications of this technology:
- Wireless communication systems: The Doherty amplifier can be used in various wireless communication systems such as cellular networks, Wi-Fi, and satellite communication.
- Radio frequency (RF) transmitters: The amplifier can be integrated into RF transmitters used in broadcasting, radar systems, and other applications requiring high power amplification.
Problems solved by this technology:
- Power efficiency: The Doherty amplifier improves power efficiency by dynamically adjusting the amplification based on the input signal frequency band.
- Linearity: The amplifier provides improved linearity by using multiple amplifiers and filter circuits to process different frequency bands separately.
Benefits of this technology:
- Increased power efficiency: The Doherty amplifier reduces power consumption by optimizing the amplification process for different frequency bands.
- Improved signal quality: By using separate amplifiers and filter circuits, the amplifier enhances linearity and reduces distortion, resulting in improved signal quality.
- Cost-effective: The design of the Doherty amplifier allows for efficient use of components, making it a cost-effective solution for high-power amplification in wireless communication systems.
Original Abstract Submitted
A Doherty amplifier includes: a first filter circuit to output a first input signal obtained by attenuating an input signal lying in a first frequency band, and to output a second input signal obtained by allowing passage of an input signal lying in a second frequency band; a second filter circuit to output a third input signal obtained by attenuating an input signal lying in the first frequency band, and to output a fourth input signal obtained by attenuating an input signal lying in the second frequency band; a first amplifier to operate as an auxiliary amplifier when receiving the first input signal, and to operate as a main amplifier when receiving the second input signal; and a second amplifier tip operate as the main amplifier when receiving the third input signal, and to operate as the auxiliary amplifier when receiving the fourth input signal.
