Phase-Modulated Antenna Assembly for Broadband Reflection Control
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Solution Overview
Problem
Traditional tightly coupled dipole antenna arrays suffer from limited bandwidth and efficiency due to reflection-induced issues, leading to short detection ranges and low resolution in RF systems, and the use of lossy materials to expand bandwidth results in severe thermal problems.
Innovation Solution
A lossless phase-modulated intermediate structure is introduced in the antenna array to modify the phase of emitted and reflected signals, increasing bandwidth and efficiency without sacrificing radiation performance, by incorporating a circuit path with a phase-shifting component that minimally attenuates wireless signals and includes a conductive path tapering from the feed source to the antenna.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional tightly coupled dipole antenna arrays are used, then the structure is simple and easy to manufacture, but the bandwidth is limited and detection range is short
Solution Approach 1:
A lossless intermediate structure is introduced between the feed source and the antenna array. This intermediate structure includes phase shifting components that modify the phase of emitted and reflected signals without introducing loss. The intermediate structure acts as a mediator that enables broadband operation while maintaining the simple TCDAs architecture, thereby resolving the contradiction between structural simplicity and bandwidth adaptability.
Solution Approach 2:
The patent modifies the phase parameters of signals through the intermediate structure rather than changing the magnitude or introducing lossy materials. By controlling phase shifts in the intermediate structure, the system achieves broadband operation and extended detection range while maintaining the original simple antenna array structure, thus improving adaptability without sacrificing ease of manufacture.
2Adaptability or versatility
If lossy materials are used to expand bandwidth, then the operating bandwidth increases, but system efficiency decreases and thermal problems occur
Solution Approach 1:
Instead of using lossy materials to absorb reflected signals (which causes energy loss and heating), the patent converts the harmful reflections into useful signals by phase-shifting them in the lossless intermediate structure. The reflected signals are phase-modified and recombined with the emitted signals constructively, transforming what was previously a harmful effect into a beneficial contribution to the overall signal, thereby expanding bandwidth without energy loss.
Solution Approach 2:
The patent replaces the traditional approach of using lossy materials (electromagnetic absorption mechanism) with a phase-shifting mechanism in the intermediate structure. This substitution eliminates the need for energy-dissipating materials and achieves bandwidth expansion through phase control, maintaining system efficiency while preventing thermal problems.
3Adaptability or versatility
If lossless phase-modulated intermediate structure is introduced, then bandwidth and efficiency are improved, but device complexity increases
Solution Approach 1:
The intermediate structure performs multiple functions simultaneously: it phase-shifts emitted signals, phase-shifts reflected signals, and enables broadband operation without introducing loss. By consolidating these multiple functions into a single lossless intermediate structure, the patent achieves bandwidth expansion and efficiency improvement while limiting the increase in overall system complexity.
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 solution significantly enhances the operating bandwidth and efficiency of the antenna array, producing a stronger output signal across a wide bandwidth while minimizing signal attenuation, thus overcoming the limitations of traditional arrays.
Implementation Method 1
The intermediate structure modifies a phase of first wireless signals such as signals emitted in a first direction (such as downward) from the antenna towards a ground plane associated with the feed source. The intermediate structure also can be configured to modify a phase of a reflection of the first wireless signals
Implementation Method 2
An antenna assembly includes a circuit path that conveys energy from a feed source to a respective antenna of the antenna assembly
Implementation Method 3
signals emitted in a first direction (such as downward) from the antenna towards a ground plane associated with the feed source
Data Source
AI summary
A circuit path (115) conveys energy from a feed source (120) to an antenna element (110). An intermediate structure (125) is disposed in the circuit path (115) between the feed source (120) and the antenna element (110). The intermediate structure (125) modifies a phase of first wireless signals (191) such as signals emitted in a first direction from the antenna element (110) towards the feed source (120). The intermediate structure (125) may modify a phase of a reflection of the first wireless signals emitted in a second direction toward the antenna, the second direction opposite the first direction. Modifying the phase of the emitted and reflected wireless signal provides an overall stronger output signal from the antenna. For example, the phase modified reflected wireless signal combines with an original transmitted wireless signal from the antenna to produce a strong output signal with across a wide bandwidth.