Compressible Helical Antenna for Rapid Deployment
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Solution Overview
Problem
Existing helical antennas are heavy, rigid, and difficult to deploy quickly, as they require precise dimensions and materials for optimal operation, limiting their use in situations requiring fast setup and safety.
Innovation Solution
A compressible helical antenna design using a spring-type conductor affixed to a backplane, with a tensioned fabric cover and optional cap for stabilization, allowing for easy compression and deployment, and a flexible feedpoint for impedance matching and mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid materials and precise dimensional requirements are used for helical antennas, then optimal operation and gain characteristics are achieved, but the antenna becomes heavy and difficult to deploy quickly
Solution Approach 1:
The patent applies the dynamics principle by using a spring-form helical radiator that can dynamically change its state between compressed (storage) and expanded (operational) configurations. This allows the antenna to transition from a compact, lightweight storage state to a functional operational state, resolving the contradiction between portability and optimal operation.
Solution Approach 2:
The patent changes the physical state and dimensional parameters of the helical radiator through compression and expansion. The spring-form structure allows the antenna to alter its length, volume, and rigidity parameters, enabling it to be lightweight and compact during transport while maintaining necessary dimensions for optimal operation when deployed.
2Reliability
If rigid materials and precise dimensional requirements are used for helical antennas, then optimal operation is achieved, but deployment speed and ease of setup are reduced
Solution Approach 1:
The spring-form helical radiator enables rapid deployment through dynamic expansion from a compressed to an extended state. This mechanical transformation allows the antenna to be quickly deployed without requiring complex assembly procedures, significantly reducing setup time while maintaining operational integrity.
Solution Approach 2:
The antenna is pre-configured in a compressed storage state that maintains its structural integrity and dimensional accuracy. This preliminary preparation allows for rapid deployment without requiring on-site assembly or adjustment, reducing setup time while ensuring optimal operation is achieved immediately upon deployment.
3Weight of moving object
If the antenna is made collapsible and lightweight, then portability and safety are improved, but maintaining accurate dimensions for optimal operation becomes difficult
Solution Approach 1:
The spring-form structure allows the antenna to maintain precise dimensional parameters through controlled compression and expansion. The elastic properties of the spring material enable the antenna to return to its predetermined dimensional configuration after compression, ensuring manufacturing precision is maintained despite the collapsible design.
Solution Approach 2:
The dynamic spring-form structure inherently maintains dimensional accuracy through its elastic recovery properties. When compressed for portability and then released, the spring automatically returns to its original dimensions, ensuring that accurate dimensional requirements for optimal operation are maintained without requiring rigid materials.
4Reliability
If rigid structures are used to maintain accurate dimensions, then optimal operation is achieved, but the antenna becomes massive and unsafe in case of falling
Solution Approach 1:
The spring-form helical radiator changes its physical state between compressed and expanded configurations. In the compressed state, the antenna is lightweight and safe for transport and storage. When deployed, it expands to maintain the necessary dimensions for optimal operation, thus resolving the safety hazard while preserving operational reliability.
Solution Approach 2:
The dynamic spring structure allows the antenna to transition from a compact safe state during transport to a functional operational state when deployed. This eliminates the need for permanently rigid and potentially hazardous structures, as the antenna only assumes its operational dimensions when needed and returns to a safe compact state when not in use.
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
The design results in a lightweight, easily deployable antenna that maintains necessary dimensions for circular polarization over a large bandwidth, enhancing safety and wireless coverage with reduced weight and setup time.
Implementation Method 1
a compression spring-form helical radiator
Implementation Method 2
the feedpoint of the antenna is enhanced with the use of a ferrite choke
Data Source
AI summary
A spiral, helical antenna is configured to produce a generally circular polarized radiation pattern covering a range of frequencies, over a ground plane. The antenna is comprised of a spring-like spiral conductor that may be held in compression by a size and shape regulating outer nonconductive membrane. The assembly may be compressed and or extended to adjust the antenna for best performance in a particular situation. The assembly may be compressed into a generally flattened state for storage and or transportation, and extended at a later time for use. Accurate antenna dimensions and good performance are afforded by the use of high quality spring materials in conjunction with precise membrane dimensions.