Multi-Mode Mixer Switching for Linearity and Power Tradeoffs
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Solution Overview
Problem
Current wireless interface devices designed for Wi-Fi and 4G cellular standards are inadequate for 5G and faster Wi-Fi technologies, which require efficient operation at millimeter wave (mmW) frequencies, leading to increased power consumption and reduced linearity performance due to the need for multiple antenna elements and component chains.
Innovation Solution
A multi-mode mixer that selectively switches between active and passive modes to balance power consumption and linearity performance, using a current control switch to enable or disable DC current flow through the mixer core, depending on operational scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless interface devices operate at millimeter wave frequencies for 5G and faster Wi-Fi technologies, then bandwidth and data transmission capabilities are improved, but power consumption increases and linearity performance deteriorates
Solution Approach 1:
The mixer is designed to dynamically switch between active and passive modes based on operational requirements. The current control switch enables the mixer to transition from a static design to a dynamic one, adjusting its operational state to match the current communication demands, thereby optimizing power consumption while maintaining necessary performance levels.
Solution Approach 2:
The invention changes the operational parameters of the mixer by introducing two distinct modes: active mode with DC current flow for high-performance scenarios and passive mode without DC current flow for low-power scenarios. This parameter change allows the system to adapt to different operational requirements, switching between power consumption and performance as needed.
2Reliability
If multiple antenna elements and component chains are used to support millimeter wave frequencies, then bandwidth and signal quality are improved, but device complexity and power consumption increase
Solution Approach 1:
The multi-mode mixer serves multiple functions by operating in both active and passive modes, replacing the need for separate high-performance mixers that would be required for each operational scenario. This universal component can adapt to different signal quality requirements and power constraints, reducing overall device complexity while maintaining reliability across various operating conditions.
3Reliability
If active mode is used continuously to maintain good linearity performance, then signal quality is improved, but power consumption increases
Solution Approach 1:
The mixer employs periodic switching between active and passive modes based on communication scenarios. During mission-related scenarios requiring high linearity, the mixer operates in active mode. During non-mission-related scenarios, it switches to passive mode to conserve power. This periodic action optimizes the balance between signal quality and power consumption over time.
Solution Approach 2:
The invention applies partial action by using DC current flow only when necessary for high-performance operations. Instead of continuously applying full power (excessive action), the system applies power selectively and partially, activating the mixer core only during mission-critical operations and keeping it in a low-power state during routine or non-critical periods.
Data Source
AI summary
An apparatus is disclosed for mixing signals with a multi-mode mixer for frequency translation. In example implementations, a multi-mode mixer includes a supply voltage node, a ground node, a first data signal coupler, and a second data signal coupler. The multi-mode mixer also includes a mixer core and a current control switch. The mixer core is coupled between the first data signal coupler and the second data signal coupler. The current control switch is configured to selectively enable or disable flow of a current through the mixer core. The first data signal coupler, the second data signal coupler, the mixer core, and the current control switch are coupled together in series between the supply voltage node and the ground node.