Dual-Polarized Antenna Array Spacing for 20-45 GHz
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Solution Overview
Problem
Conventional high frequency antennas are inadequate for frequency bands above 20-45 GHz, as they are designed for lower frequency bands like 2.6 GHz and struggle to accommodate higher frequency ranges such as 20-45 GHz.
Innovation Solution
A high frequency antenna device and antenna array are designed with a substrate, dual-polarized metal sheet antennas arranged in rows, and a processing chip, where antennas are spaced at intervals corresponding to 0.25-0.75 times the wavelength, enabling operation in the 20-45 GHz range with improved transmitting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional high frequency antenna structure is used, then it is suitable for lower frequency bands (e.g., 2.6 GHz), but it cannot effectively operate in higher frequency bands (e.g., 20-45 GHz)
Solution Approach 1:
The patent changes the structural parameters of the antenna, specifically the spacing between adjacent antennas in the array, to be within 0.25-0.75 times the wavelength. This parameter adjustment enables the antenna to effectively operate in the 20-45 GHz frequency band while maintaining reliable transmitting performance, resolving the contradiction between frequency band adaptability and transmitting performance.
2Reliability
If antenna spacing is increased to reduce interference, then individual antenna performance is maintained, but array effectiveness in millimeter wave bands decreases
Solution Approach 1:
The patent optimizes the antenna array spacing parameter to be within 0.25-0.75 times the wavelength, which balances the trade-off between maintaining individual antenna performance and achieving effective array operation in millimeter wave bands, thereby resolving the contradiction between transmitting performance and array effectiveness.
3Productivity
If antenna elements are closely spaced to improve array performance, then array effectiveness increases, but mutual interference between elements increases
Solution Approach 1:
The patent determines the optimal antenna spacing parameter to be within 0.25-0.75 times the wavelength, which maximizes array effectiveness while controlling mutual interference between elements, thus resolving the contradiction between array effectiveness and mutual interference.
Data Source
AI summary
A high frequency antenna device is applied to an operation frequency band within a range of 20-45 GHz. The high frequency antenna device includes a substrate, an antenna array and a processing chip both respectively disposed on two opposite sides of the substrate, and two connectors mounted on the substrate. The antenna array includes a plurality of antennas arranged in at least one row. Each antenna is a dual-polarized metal sheet configured to be selectively operated in a horizontal polarization and a vertical polarization. The operation frequency band has a central frequency corresponding to a wavelength. Central points of any two adjacent antennas have an interval within a range of 0.25-0.75 times of the wavelength. The processing chip is electrically coupled to the antennas and the two connectors. The two connectors electrically correspond to the horizontal polarization and the vertical polarization of each of the antennas.