20240022223.VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING simplified abstract (apple inc.)
Contents
- 1 VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 Unanswered Questions
- 1.11 Original Abstract Submitted
VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING
Organization Name
Inventor(s)
Morteza Nick of San Francisco CA (US)
David M. Signoff of Santa Clara CA (US)
Preeti S. Mulage of Saratoga CA (US)
VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240022223 titled 'VARIABLE GAIN AMPLIFIER WITH SUBTHRESHOLD BIASING
Simplified Explanation
The patent application is directed towards reducing output voltage distortions of variable gain amplifiers (VGAs) by providing a subthreshold nonzero bias voltage to non-selected amplifiers of the VGA.
- Variable gain amplifiers (VGAs) consist of multiple amplifiers that collectively provide a total gain for the VGA.
- A processing circuit selects specific amplifiers to provide the desired output signal with a selected gain.
- Selected amplifiers may introduce distortion signals when receiving a bias voltage.
- Non-selected amplifiers receive a weak voltage to produce distortion signals with similar voltage amplitude and out of phase compared to selected amplifiers.
Potential Applications
This technology could be applied in:
- Communication systems
- Audio equipment
- Medical devices
Problems Solved
- Reduction of output voltage distortions in VGAs
- Improved signal quality
- Enhanced performance of amplifiers
Benefits
- Higher quality output signals
- Increased efficiency of VGAs
- Improved overall system performance
Potential Commercial Applications
- Consumer electronics
- Telecommunications industry
- Medical device manufacturers
Possible Prior Art
One possible prior art could be the use of feedback mechanisms in amplifiers to reduce distortions in output signals.
Unanswered Questions
How does the weak voltage provided to non-selected amplifiers effectively reduce distortion signals in the output signal of the VGA?
The weak voltage provided to non-selected amplifiers is believed to help cancel out or reduce the distortion signals by creating similar distortion signals with opposite phase compared to the selected amplifiers.
Are there any limitations to the effectiveness of using a subthreshold nonzero bias voltage in reducing output voltage distortions in VGAs?
While the method described in the patent application shows promise in reducing distortions, further testing and analysis may be needed to determine any limitations or potential drawbacks in practical applications.
Original Abstract Submitted
this disclosure is directed to reducing output voltage distortions of variable gain amplifiers (vgas). a vga may include a number of amplifiers each providing a portion of a total gain of the vga. for example, a processing circuit may select one or more of the amplifiers of the vga to provide the output signal with a selected gain. however, the selected amplifiers may provide amplified signals with one or more distortion signals when receiving a bias voltage. systems and methods are described to reduce or cancel the distortion signals of the selected amplifiers by providing a subthreshold nonzero bias voltage (e.g., a weak voltage) to the remaining (e.g., non-selected) amplifiers of the vga. for example, the non-selected amplifiers may receive the weak voltage to provide distortion signals with similar voltage amplitude and out of phase compared to the distortion signals of the selected amplifiers.
