Phase Shifter Layout With Dual Gate Tuning for Fine Phase Control
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Solution Overview
Problem
The miniaturization of integrated circuits (ICs) has led to stricter design and manufacturing specifications for phase shifter circuits, particularly in terms of phase tuning mechanisms and resolution, as higher frequencies demand more precise control over phase shifts.
Innovation Solution
The phase shifter circuit incorporates an active region and two sets of gates, with the second set of gates positioned along opposite edges of the active region to provide additional reliability and functionality during manufacturing. This configuration allows for multiple phase tuning mechanisms, enhancing resolution and the adjustable range compared to single-tuning approaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the phase shifter circuit is miniaturized to reduce area and power consumption, then area and power dissipation are reduced, but manufacturing precision and phase tuning resolution deteriorate
Solution Approach 1:
The phase shifter circuit is divided into multiple independent phase tuning mechanisms operating at different frequencies. Each mechanism can be independently controlled and optimized, allowing the overall system to achieve high precision phase tuning without requiring a single large-scale component that would increase area and power consumption.
Solution Approach 2:
The phase shifter employs dynamic phase tuning capabilities across multiple frequency ranges, allowing the circuit to adaptively adjust phase shifts based on operating conditions. This dynamic approach enables precise phase control in miniaturized circuits without sacrificing manufacturing precision.
2Area of moving object
If the phase shifter circuit is miniaturized to reduce area and power consumption, then area and power dissipation are reduced, but reliability deteriorates
Solution Approach 1:
By segmenting the phase shifter into multiple independent mechanisms, the failure of one segment does not necessarily compromise the entire circuit. This modular approach enhances reliability while maintaining a compact footprint, as each segment can be independently designed and tested for robustness.
Solution Approach 2:
The circuit utilizes parameter changes across different frequency ranges to achieve phase tuning, allowing each miniaturized component to operate within optimized parameter ranges that enhance reliability. This enables precise control without requiring larger, more vulnerable components.
3Measurement precision
If multiple phase tuning mechanisms are added to improve resolution and adjustable range, then phase tuning capability is improved, but device complexity increases
Solution Approach 1:
The phase shifter circuit is designed with multi-functional capabilities where the same basic circuit topology serves multiple frequency ranges and phase tuning functions. This universal approach allows high resolution phase tuning across wide bandwidths without proportionally increasing circuit complexity, as each mechanism can be implemented using similar design principles and components.
Data Source
AI summary
A phase shifter includes a first transistor, and a second transistor coupled to the first transistor. The first transistor includes an active region extending in a first direction, and a first set of gates extending in a second direction. The first set of gates overlaps the active region and is configured to receive a first voltage. The first transistor is configured to adjust a resistance or a first capacitance of the phase shifter responsive to the first voltage. The second transistor includes the active region, and a second set of gates extending in the second direction. The second set of gates overlaps the active region, is positioned along opposite edges of the active region, and is configured to receive a second voltage. The second transistor is configured to adjust a second capacitance of the phase shifter responsive to the second voltage.