Programmable Transmitter Unit Cells for CMOS Area Efficiency
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Solution Overview
Problem
Conventional transmitter circuit designs struggle to scale with complementary metal-oxide-semiconductor (CMOS) technology advancements, leading to inefficiencies and increased silicon area usage.
Innovation Solution
The development of programmable transmitter circuits that receive control signals to configure and optimize operations, utilizing a current generator with unit cells and a transmitter controller circuit to achieve high efficiency and small silicon area usage, allowing for efficient scaling with CMOS technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional transmitter circuit designs are used, then the circuit can transmit signals to a load, but the silicon area usage increases and efficiency decreases as CMOS technology scales
Solution Approach 1:
The transmitter circuit is divided into multiple unit cells (first unit cell, second unit cell, etc.) that can be independently controlled. Each unit cell contains specific functional blocks that can be selectively activated based on transmission requirements, allowing the circuit to scale efficiently with CMOS technology while minimizing silicon area usage.
Solution Approach 2:
The transmitter circuit incorporates programmable control mechanisms that allow dynamic reconfiguration of the unit cells based on transmission demands. Control signals can enable or disable specific unit cells and functional blocks, optimizing the circuit's efficiency and area utilization as CMOS technology scales.
2Adaptability or versatility
If transmitter circuit complexity is increased to improve functionality, then more features can be supported, but the device complexity increases
Solution Approach 1:
The transmitter circuit is designed with universal unit cells that can support multiple wireless standards and modulation schemes through programmable control. The same basic unit cell structure can be configured to different operational modes, providing versatility without proportionally increasing circuit complexity.
Solution Approach 2:
The circuit uses parameter-based control where control signals modify the operational parameters of the unit cells (such as enabling/disabling specific blocks, adjusting gain, or changing modulation schemes) rather than requiring separate hardware for each function. This allows support for multiple wireless standards while maintaining relatively simple circuit architecture.
Data Source
AI summary
A programmable transmitter circuit may be coupled to a controller circuit. The controller circuit may be configured to generate control signals based at least on a signal. The transmitter circuit may include a plurality of unit cells. Each unit cell may include a respective first current source and a respective second current source. Each unit cell may be configured to be set in an activated state or a deactivated state based at least on the control signals. For a unit cell of the plurality of unit cells, when the unit cell is set in the activated state, the respective first current source or the respective second current source may be configured to generate a current to be applied to a load.