Dipole Antenna Array Bandwidth via Segmented Frames
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Solution Overview
Problem
Dipole-type radiator arrangements in existing antenna systems have a limited bandwidth, which is insufficient for many applications, particularly in mobile communications.
Innovation Solution
The design incorporates two pairs of radiator halves with a 90° rotational offset, arranged in a radiator plane parallel to and spaced in front of a reflector, with electrically conductive partially circumferential frames between the radiator plane and the base, featuring breaks that extend through the entire width of the frames to enhance bandwidth, allowing for broader frequency coverage with a single system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dipole radiator arrangements are used, then the structure is simple and easy to manufacture, but the bandwidth is limited and insufficient for many applications
Solution Approach 1:
The radiator arrangement is divided into two pairs of radiator halves (first pair and second pair) with a 90° rotational offset relative to each other. Each pair is arranged in a radiator plane parallel to and spaced in front of a reflector. This segmentation allows the system to cover broader frequency ranges by utilizing multiple radiator configurations simultaneously.
Solution Approach 2:
The patent introduces electrically conductive partially circumferential frames arranged between the radiator plane and the base, spaced in the height direction along the carrier assembly. These frames extend in the vertical dimension, creating additional electromagnetic pathways that broaden the operational bandwidth of the radiator arrangement.
2Adaptability or versatility
If multiple radiators or antenna columns/rows are used to cover different frequency ranges, then the bandwidth coverage is improved, but the device complexity and cost increase
Solution Approach 1:
The patent combines two pairs of radiator halves with 90° rotational offset into a single integrated radiator arrangement. This merging allows multiple frequency ranges to be covered by one unified structure rather than requiring separate antenna columns or rows, thereby reducing device complexity while maintaining broad frequency coverage.
Solution Approach 2:
The radiator arrangement is designed to perform multiple functions simultaneously: it covers different frequency ranges, maintains dual polarization capability, and operates with a single base structure. The electrically conductive frames further enhance this multi-functionality by enabling the same structure to resonate at multiple frequencies.
3Adaptability or versatility
If the radiator halves are arranged in a single configuration, then the manufacturing is simple, but the bandwidth is limited
Solution Approach 1:
The radiator arrangement is segmented into two pairs of radiator halves that can be independently positioned at 90° rotational offsets. This segmentation allows for modular assembly, where each pair can be manufactured and tested separately before being integrated into the final configuration, balancing manufacturing simplicity with enhanced bandwidth performance.
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 configuration significantly increases the bandwidth, enabling the coverage of frequency ranges previously requiring multiple radiators or antennas, resulting in cost savings and improved performance.
Implementation Method 1
The dipole-type radiator arrangement (1) comprises two pairs (2, 3) of radiator halves (2a, 2b, 3a, 3b), which are arranged having a mutual rotational offset of 90°, such that the dipole-type radiator arrangement (1) transmits and/or receives in two mutually perpendicular polarisation planes (4a, 4b)
Implementation Method 2
the radiator halves (2a, 2b, 3a, 3b), in each case, can be or are arranged in a radiator plane (5) so as to be in parallel with and at a spacing in front of a reflector (6)
Data Source
AI summary
An antenna array (20) with at least one dipole-type emitter arrangement (1), wherein the at least one dipole-type emitter arrangement (1) comprises two pairs (2, 3) of emitter halves (2a, 2b, 3a, 3b), which transmit and/or receive on two polarization planes (4a, 4b) that are perpendicular to one another. The emitter halves (2a, 2b, 3a, 3b) can be or are arranged on an emitter plane (5) at a distance from a reflector (6) and run parallel to said reflector. Two electrically conductive partial circumferential frames (15a, 15b, 15c) are provided, which are disposed between the emitter plane (5) and the reflector (6) at a distance from one another, wherein the at least two electrically conductive partial circumferential frames (15a, 15b, 15c) define one opening (17). The at least two partial circumferential frames (15a, 15b, 15c) are oriented parallel to the emitter plane (5). Each of the two partial circumferential frames (15a, 15b, 15c) comprises at least one gap (16), which extends through the entire width of the partial circumferential frame (15a, 15b, 15c), so that each partial circumferential frame (15a, 15b, 15c) comprises at least two ends.