Wideband Antenna With Segmented Transmission Elements
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Solution Overview
Problem
Conventional flat antennas have a narrow bandwidth and poor compatibility with various communication standards, leading to inadequate wideband transmission and decreased transmission speed.
Innovation Solution
A wideband antenna design comprising a ground element, first, second, and third transmission elements with coupling portions, allowing the feed element to couple with these elements to transmit signals across different frequency bands, enhancing compatibility with standards like AMPS, PCS, GSM, DCS, PDC, PHS, GPS, and UMTS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional flat antenna is used, then the structure is simple, but the bandwidth is narrow and compatibility with various communication standards is poor
Solution Approach 1:
The antenna is divided into multiple transmission elements (first, second, and third transmission elements) with different lengths and configurations. Each element is optimized for specific frequency bands, allowing the antenna to cover a wide bandwidth while maintaining a relatively simple overall structure. The segmentation enables simultaneous support for multiple communication standards without requiring multiple separate antennas.
Solution Approach 2:
The antenna design makes the single antenna structure perform multiple functions by incorporating transmission elements that can operate across different frequency bands. The first transmission element handles lower frequency bands (AMPS, GSM, DCS), while the second and third elements extend coverage to higher frequencies (PCS, PHS, GPS, UMTS), making the antenna universally compatible with various communication standards.
2Productivity
If a conventional flat antenna is used, then the manufacturing cost is low, but the transmission speed is decreased
Solution Approach 1:
The transmission path is segmented into multiple elements with specific impedance values (50Ω, 75Ω, 100Ω) optimized for different frequency ranges. This segmentation enables high-speed data transmission across wide bandwidths while maintaining compatibility with standard manufacturing processes for printed circuit boards, thus improving transmission speed without significantly increasing manufacturing complexity.
3Adaptability or versatility
If a conventional flat antenna is used, then the bandwidth is narrow, but the structure remains simple
Solution Approach 1:
The antenna transitions from a traditional two-dimensional flat structure to a three-dimensional configuration by adding vertical elements and varying the spatial arrangement of transmission elements. The first transmission element extends in one dimension while the second and third elements are positioned in different spatial orientations, enabling wideband operation without excessive planar 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 antenna provides a wider bandwidth and increased transmission speed while being compatible with multiple communication standards, reducing manufacturing costs.
Implementation Method 1
the feed element couples to the first transmission element to transmit the first wireless signal
Data Source
AI summary
An antenna comprises a ground element, a first transmission element, a feed element, a second transmission element and a third transmission element. The first transmission element is electrically connected to the ground element, wherein the first transmission element comprises at least one coupling portion, a first side and a second side. The feed element corresponds to the coupling portion. The second transmission element corresponds to the first side and is electrically connected to the ground element. The third transmission element corresponds to the second side and is electrically connected to the ground element. When a first wireless signal is transmitted, the feed element couples to the first transmission element to transmit the first wireless signal. When a second wireless signal is transmitted, the feed element couples to the first transmission element, and the second and third transmission elements couple to the first transmission element to transmit the second wireless signal.