Planar Terminal Antenna Layout for Low-Profile Vertical Polarization
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Solution Overview
Problem
Existing antennas face challenges in achieving vertical polarization characteristics due to limited height space in electronic devices, which is necessary for efficient reception and transmission of vertically polarized waves.
Innovation Solution
A low-profile vertically polarized antenna design utilizing a first and second radiator in a ring structure with inductor components between them, allowing for uniform electric field distribution and rotational symmetry, enabling vertical polarization without requiring a large z-direction height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional vertically polarized antenna is used, then vertical polarization characteristic is achieved, but the height space requirement increases
Solution Approach 1:
The patent transitions from a three-dimensional vertically extended antenna structure to a two-dimensional planar structure. The first and second radiators are arranged on the same plane (x-y plane) rather than extending in the z-direction, achieving vertical polarization through in-plane configuration with inductor components providing the necessary electromagnetic coupling without requiring height space.
Solution Approach 2:
The patent changes the electromagnetic parameter configuration by introducing inductor components between the first and second radiators. These inductors modify the current distribution and electromagnetic field characteristics, enabling vertical polarization to be achieved through inductive coupling rather than through vertical physical extension, thus changing the operational parameters to compensate for the reduced dimensional structure.
2Volume of stationary object
If the antenna height is reduced to fit limited space, then the volume is reduced, but the vertical polarization capability is degraded
Solution Approach 1:
The inductor components serve as intermediary elements between the first and second radiators. These inductors mediate the electromagnetic interaction, creating the necessary vertical polarization effect through inductive coupling without requiring the radiators to be vertically separated. The inductors act as intermediate structures that enable the polarization capability while maintaining compact volume.
Solution Approach 2:
The antenna employs a composite structure combining radiating elements (first and second radiators) with reactive components (inductor components). This composite design integrates different functional elements - the radiators provide the basic radiation pattern while the inductors provide the necessary reactance and coupling to achieve vertical polarization, creating a composite structure that delivers both compact size and polarization capability.
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 achieves vertical polarization characteristics efficiently in a compact form factor, suitable for devices with limited height, enhancing omni-directionality and radiation performance.
Implementation Method 1
At least two inductor components are further included, one end of the inductor component is connected to the first radiator, and the other end of the inductor component is connected to the second radiator
Implementation Method 2
A feed is further disposed on the terminal antenna, one end of the feed is connected to the first radiator, and the other end of the feed is connected to the second radiator
Data Source
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AI summary
Embodiments of this application disclose a terminal antenna, and relate to the field of antenna technologies. The terminal antenna can implement a vertical polarization characteristic of the antenna in a low-profile space. The terminal antenna includes a first radiator and a second radiator, the first radiator is in a ring structure, the second radiator is disposed inside the first radiator, the first radiator and the second radiator are not directly connected, and the first radiator and the second radiator are located on a same plane. The terminal antenna further includes at least two inductor components, one end of the inductor component is connected to the first radiator, and the other end of the inductor component is connected to the second radiator. A feed is further disposed on the terminal antenna, one end of the feed is disposed on the first radiator, and the other end of the feed is disposed on the second radiator.