Programmable Patch Antenna Frequency and Polarization Control
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Solution Overview
Problem
Conventional reconfigurable antennas face challenges with large size, complex feeding networks, and limited working modes due to difficulties in simultaneously altering frequency and polarization without compromising performance or causing structural damage.
Innovation Solution
A patch antenna design featuring a simple structure with programmable frequency and polarization, utilizing a micro-strip line, high-resistance line, and strategically placed metallized through-holes with switches to control the connection between metal layers, allowing for flexible switching between different working modes and frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If structural reconfiguration is used to alter working frequency and polarization, then frequency and polarization can be changed, but structural damage occurs causing performance deterioration and mode interference
Solution Approach 1:
The antenna structure is segmented into multiple independent feeding networks, each capable of exciting different polarizations and frequencies. The radiating element is divided into multiple sub-elements that can be independently controlled through separate feeding ports, allowing mode reconfiguration without structural damage.
Solution Approach 2:
Multiple feeding networks act as intermediaries between the control system and the radiating element. These feeding networks enable indirect control of the antenna modes through electromagnetic coupling rather than direct structural reconfiguration, preventing mechanical damage while achieving mode switching.
2Adaptability or versatility
If array antenna or reflective array antenna is used for programmable control, then frequency and polarization can be controlled programmatically, but device size becomes large and feeding network becomes complicated
Solution Approach 1:
A single radiating element structure is designed to perform multiple functions by being excited through different feeding networks. The same physical structure can generate different polarizations and frequencies depending on which feeding network is activated, eliminating the need for separate array elements for each mode.
Solution Approach 2:
Multiple feeding networks are merged into a unified antenna structure sharing common radiating elements and substrate. The feeding networks are integrated in the same physical space with optimized routing, reducing overall device size and simplifying the feeding network compared to separate array configurations.
Data Source
AI summary
The present invention relates to a patch antenna having programmable frequency and polarization comprising the first metal covering layer, the dielectric layer, the second metal covering layer and four metallized through-holes, each of which are disposed sequentially from top to bottom, wherein the first metal covering layer comprises the feeding line and the radiating patch; the feeding line comprises the micro-strip line, which can be connected to the outer feeding port; the micro-strip line is connected to one side of the radiating patch through the high-resistance line; the radiating patch is a square-shaped metal patch; a gap is etched near the other side of the radiating patch, namely, the radiating edge; the gap is parallel to the radiating edge.