Multi-Feed Millimeter-Wave Antenna Layout for Compact Gain Retention
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Solution Overview
Problem
In next-generation wireless communication technologies using millimeter waves, reducing the volume of antennas while maintaining antenna gain is challenging due to increased mutual interference and reduced directivity when antenna elements are closely spaced.
Innovation Solution
Implementing an antenna with multi-feeding structures that reduce the number of antenna elements while maintaining the number of feeding ports, minimizing gain degradation and overall antenna volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of antenna elements is increased to increase antenna gain, then the antenna gain is improved, but the volume of the antenna increases
Solution Approach 1:
The patent combines multiple feeding ports (e.g., 4 feeding ports) into a smaller number of antenna elements (e.g., 2 antenna elements) by implementing multi-feeding structures where each antenna element is fed by multiple feeding ports. This merging approach allows the antenna to achieve the gain of multiple elements while occupying the space of fewer elements, thereby resolving the contradiction between antenna gain and antenna volume.
2Volume of stationary object
If the intervals between antenna elements are reduced to reduce antenna volume, then the antenna volume is reduced, but mutual interference increases and antenna gain decreases
Solution Approach 1:
The patent transitions from a single-plane antenna arrangement to a three-dimensional stacked structure where antenna elements are arranged on multiple surfaces of a substrate. This dimensional change allows antenna elements to be positioned in different spatial layers, reducing mutual interference while maintaining compact overall volume, thus resolving the contradiction between reduced antenna volume and maintained antenna gain.
3Volume of stationary object
If antenna elements are mounted on several surfaces of substrate to reduce antenna size, then the antenna volume is reduced, but directivity becomes different and array antenna effects are reduced
Solution Approach 1:
The patent implements multi-feeding structures where each antenna element is fed by multiple feeding ports with different phase relationships. This allows a single antenna element to perform multiple functions: it can operate with different directivities and radiation patterns depending on the feeding configuration, thereby maintaining array antenna effects even when elements are mounted on several surfaces of the substrate.
Data Source
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AI summary
According to various embodiments, an electronic device may comprise: a housing including a first plate, a second plate oriented in a direction opposite to the first plate, and a side member surrounding a space between the first plate and the second plate; and, as an antenna structure including at least one plane parallel to the second plate, wherein the antenna structure includes a first element disposed on the plane, a second element spaced apart from the first element on the plane when viewed from above the plane, and a third element spaced apart from the second element on the plane when viewed from above the plane, the second element being disposed between the first element and the third element, a wireless communication circuit electrically configured to transmit and receive a signal having a frequency range of 10 GHz-100 GHz, wherein the wireless communication circuit includes a first electrical path connected to the first element, a second electrical path connected to a first point on the second element, the first point being closer to the first element than to the third element, a third electrical path connected to a second point on the second element, the second point being closer to the third element than to the first element, and a fourth electrical path connected to the third element, and the wireless communication circuit is configured to provide a phase difference between a first signal from the first point and a second signal from the second point. Various other embodiments may also be possible.