Nanoplasma RF Switch Biasing Without Passive Isolation Components

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Solution Overview

Problem

Conventional nanoplasma switches require passive components like DC blocking capacitors, choke inductors, or baluns for isolation, which increase circuit cost and area.

Innovation Solution

A nanoplasma switching system that includes a nanoplasma RF switch and a nanoplasma DC switch, where the DC switch is positioned adjacent to but spaced apart from the RF switch, inducing a nanoplasma through the RF switch using a DC bias voltage, thereby eliminating the need for passive components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If passive components (DC blocking capacitors, choke inductors, baluns) are used for isolation in nanoplasma switches, then DC bias can be applied to control the nanoplasma state, but circuit cost and area increase

Engineering Contradiction:

ImproveDC bias control capabilityVSAvoidcircuit cost and area

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts and eliminates the passive isolation components (DC blocking capacitors, choke inductors, baluns) from the circuit by using a separate DC switch positioned adjacent to the RF switch. This DC switch directly controls the nanoplasma state without requiring traditional isolation components, thereby reducing circuit complexity and area while maintaining DC bias control capability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a DC switch as an intermediary component that mediates between the DC bias voltage source and the nanoplasma RF switch. This DC switch creates a localized electric field that induces nanoplasma formation without requiring passive isolation components, serving as a direct control mechanism that eliminates the need for traditional RF isolation hardware

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution allows for efficient RF switching without the need for passive components, reducing circuit complexity and cost while enhancing control over the nanoplasma state.

Implementation Method 1

The first nanoplasma DC switch is operable to induce a nanoplasma through the nanoplasma RF switch when the DC bias voltage is set to a first voltage level

Methodology Applied

Scientific EffectNanoplasma induction: Plasma

Implementation Method 2

The first nanoplasma DC switch is positioned adjacent to and spaced apart from the nanoplasma RF switch, inducing a nanoplasma through the nanoplasma RF switch

Methodology Applied

Scientific EffectElectric field effect: Electric Field

Data Source

PatentUS12267940B2Apparatus and methods for nanoplasma switches

Publication Date: 2025.04.01 ANALOG DEVICES INT UNLTD CO

AI summary

Apparatus and methods for nanoplasma switches are disclosed. In certain embodiments, a nanoplasma switching system includes a nanoplasma radio frequency (RF) switch that receives an RF signal, and a nanoplasma DC switch that receives a DC bias voltage. The nanoplasma DC switch is positioned adjacent to but spaced apart from the nanoplasma RF switch. The nanoplasma DC switch induces a nanoplasma through the nanoplasma RF switch when the DC bias voltage is set to a first voltage level. By implementing the nanoplasma switching system in this manner, DC bias to turn on or off the nanoplasma RF switch can be realized without needing to use passive components such as DC blocking capacitors, choke inductors, or baluns for isolation.