Millimeter-Wave Antenna Arrays With Separate Resonances and Termination
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Solution Overview
Problem
Existing RF communication systems face challenges in efficiently handling multiple millimeter wave frequency bands due to limitations in antenna arrays and termination networks, which affect signal transmission and reception.
Innovation Solution
The implementation of an antenna array with separate resonant modes for multiple frequency bands, coupled with adjustable termination networks, allows for efficient signal termination and amplification across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna array is used for multiple millimeter wave frequency bands, then device complexity is reduced, but signal transmission efficiency deteriorates due to inability to provide optimal termination for each frequency band
Solution Approach 1:
The antenna array is segmented into multiple independent antenna elements, each capable of supporting multiple resonant modes. Each antenna element is equipped with separate termination networks that can be independently controlled, allowing the system to divide and conquer the challenge of multi-band operation by treating each antenna element as an independent unit with specialized termination for different frequency bands.
Solution Approach 2:
The termination networks are made dynamically adjustable through voltage-controlled switches that can change the termination impedance based on the operating frequency band. This dynamic reconfiguration allows the same physical antenna array to adapt its electrical characteristics for optimal performance across different millimeter wave frequency bands, resolving the contradiction between fixed structure and variable performance requirements.
2Reliability
If separate termination networks are added for each resonant mode, then signal handling capability is improved, but device complexity increases
Solution Approach 1:
Multiple termination networks for different frequency bands are merged and integrated into a single compact circuit architecture. The termination networks share common ground connections and are co-located near each antenna element, reducing the overall space required and minimizing interconnections. This merging approach maintains the signal handling capability of separate termination while reducing the complexity burden of having multiple independent networks.
Solution Approach 2:
The termination networks are designed with multi-functional capability, where each termination network can serve multiple purposes: providing impedance matching for its designated frequency band, acting as a switch for enabling/disabling specific antenna elements, and contributing to overall system grounding. This universality reduces the need for dedicated single-function components, thereby reducing overall device complexity while maintaining enhanced signal handling capability.
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
This solution enables improved signal handling and transmission across multiple millimeter wave frequency bands, enhancing the performance and efficiency of RF communication systems.
Implementation Method 1
The first antenna element has a first resonant mode and a second resonant mode. The first termination network is operable to provide termination at a first frequency corresponding to the first resonant mode, and the second termination network is operable to provide termination at a second frequency corresponding to the second resonant mode.
Data Source
AI summary
Antenna arrays with separate resonances and termination networks for multiple millimeter wave frequency bands are provided herein. In certain embodiments, an antenna array includes a first antenna element that receives the first radio frequency transmit signal at an input. The first antenna element has a first resonant mode and a second resonant mode. The antenna array further includes a first termination network connected to the input of the first antenna element and a second termination network connected to the input of the first antenna element.