Multiband Antenna Using Split Radiating Parts and Gap Coupling
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Solution Overview
Problem
Existing small-scale multiband antenna designs are hindered by their large size, which conflicts with the miniaturization trend in wireless communication devices.
Innovation Solution
A compact multiband antenna design featuring a split structure with a first radiating part and a second radiating part coupled through a gap, utilizing a planar inverted F antenna and a unipolar antenna configuration, where the radiating parts are connected to a base plate with specific metal segments and a diplexer for signal differentiation across frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If split antenna structure design is applied to receive and send wireless signals in different frequency bands, then multi-band signal reception capability is improved, but antenna size increases
Solution Approach 1:
The patent merges multiple antenna functions into a single integrated structure. The first and second radiating parts are integrated on opposite sides of a base plate, forming a unified multiband antenna that can receive signals across multiple frequency bands (2.4G, 5G, LTE) simultaneously, eliminating the need for separate antennas for each band.
Solution Approach 2:
The patent utilizes the third dimension by placing the first radiating part on the first side of the base plate and the second radiating part on the second side of the base plate. This spatial arrangement in opposite directions enables multi-band operation while maintaining a compact footprint, effectively using vertical separation to achieve frequency differentiation.
2Volume of moving object
If compact antenna design is implemented, then device miniaturization is achieved, but signal reception effectiveness may be compromised
Solution Approach 1:
The antenna is segmented into distinct radiating parts for different frequency bands. The first radiating part is dedicated to 2.4G and 5G bands, while the second radiating part handles LTE bands. This segmentation allows each part to be optimized for its specific frequency range, ensuring reliable signal reception despite the compact overall size.
Solution Approach 2:
The base plate serves as an intermediary structure that couples the first and second radiating parts. The diplexer connected to the first radiating part acts as a mediator to separate different frequency bands, ensuring that signal reception effectiveness is maintained across multiple bands while keeping the antenna compact.
Data Source
AI summary
An electronic device includes a base plate and a miniaturized multiband antenna. The multiband antenna is set on the base plate. The base plate includes a first side and a second side relative to the first side. The multiband antenna includes a first radiating part and a second radiating part. The first radiating part is set on the first side. The second radiating part is set on the second side. A gap is formed between the first radiating part and the second radiating part which facilitates a coupling oscillation between the first radiating part and the second radiating part, which enables the multiband antenna to work in at least one working band.