Multi-Plane Antenna Coupling for Wideband WWAN WLAN WIMAX
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Solution Overview
Problem
Conventional antennas fail to meet current transmission requirements for signals at 900 MHz, 1800 MHz, 1900 MHz, and 2100 MHz, as they cannot provide the necessary bandwidth to efficiently transmit WWAN, WLAN, and WIMAX signals within the required frequency ranges.
Innovation Solution
The antenna design includes a ground element, a radiating element, a conductive element, and a coupling element, where the coupling element extends parallel to the radiating element, allowing for increased bandwidth and improved transmission by adjusting the matching effect using additional matching elements to support frequencies between 1710-2179 MHz and 824-960 MHz.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional antenna structure is used, then the structure is simple, but the bandwidth is insufficient to transmit multiple frequency signals (900 MHz, 1800 MHz, 1900 MHz, 2100 MHz)
Solution Approach 1:
The antenna is divided into multiple functional elements: a ground element, a radiating element, a conductive element connecting them, and a coupling element extending from the conductive element. This segmentation allows each element to contribute to different frequency ranges, enabling multi-band operation while maintaining a relatively simple overall structure.
Solution Approach 2:
The coupling element is positioned in a spatial relationship where it extends from the conductive element substantially parallel to the radiating element, with the coupling element located on a first plane and the radiating element on a second plane that is parallel to the first plane. This multi-planar configuration expands the electrical path length and resonant characteristics without significantly increasing the physical footprint, thereby increasing bandwidth.
2Adaptability or versatility
If the antenna structure is extended to increase bandwidth, then the bandwidth increases, but the antenna size increases
Solution Approach 1:
The coupling element is integrated into the existing antenna structure by extending from the conductive element that already connects the ground and radiating elements. This nested configuration allows the bandwidth-enhancing coupling element to be incorporated without adding a separate, space-consuming antenna structure.
Solution Approach 2:
By utilizing a multi-planar configuration where the coupling element resides on a first plane and the radiating element on a parallel second plane, the design effectively uses three-dimensional space efficiently. This allows increased electrical length and bandwidth without proportionally increasing the physical volume or footprint of the antenna.
Data Source
AI summary
An antenna comprises a ground element, a transmission element, a conductive element and a coupling element. The conductive element connects the ground element and the transmission element. The coupling element extends from the conductive element substantially parallel to the transmission element, wherein the coupling element is located on a first plane, the transmission element is located on a second plane, and the second plane is parallel to the first plane.