Shared Antenna Radiation Pattern Selection for Multi-Band Isolation
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Solution Overview
Problem
Communication systems with multiple independent radio chains require a large number of antennas, leading to increased space occupation and production costs, while sharing a single set of antennas across different frequency chains results in lower performance and unsatisfactory interference levels.
Innovation Solution
A communication system with a single set of antennas that can emit and receive signals across different frequencies, using an electronic selection circuit to control the radiation patterns of each antenna, allowing for flexible configuration and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple independent radio chains each use dedicated antennas, then interference between chains is minimized, but the number of antennas increases leading to larger space occupation and higher production costs
Solution Approach 1:
The patent merges the antenna resources of multiple radio chains by introducing a sharing mechanism where a single set of antennas serves multiple chains operating at different frequencies. This is achieved through frequency-selective routing that directs signals from different chains to appropriate antennas based on frequency bands, thereby reducing the total number of antennas while managing interference through frequency differentiation rather than physical separation
Solution Approach 2:
The antennas are designed to perform multiple functions by serving different radio chains operating at different frequencies. The same physical antenna infrastructure handles multiple frequency bands through intelligent signal routing, making the antenna system universal rather than dedicated to a single chain, thus reducing quantity while maintaining functional separation
2Quantity of substance
If a single set of antennas is shared across different frequency chains, then space occupation and production costs are reduced, but interference between signals with different frequencies increases and performance decreases
Solution Approach 1:
The patent introduces frequency-selective switches and routing circuits as intermediary components between the radio chains and the shared antenna array. These intermediaries selectively connect specific chains to specific antennas based on frequency bands, acting as mediators that prevent direct interference while enabling shared antenna usage. The intermediaries filter and direct signals to ensure frequency isolation despite physical sharing
Solution Approach 2:
The frequency spectrum is segmented into different bands, and the antenna system is logically segmented to serve different frequency ranges. By dividing the operating frequencies into distinct segments and assigning specific antennas or antenna groups to specific segments, the system reduces inter-frequency interference while maintaining efficient resource utilization through the shared antenna infrastructure
Data Source
AI summary
A communication system includes a plurality of radio chains, each configured to generate an electrical signal having a predetermined frequency that is distinct that of the other radio chains. One or more antennas are connected to the plurality of radio chains to emit and/or receive an electromagnetic signal with a frequency corresponding to that of the electrical signal generated by the radio chains, and an electronic selection circuit has inputs connected to the radio chains and one or more outputs connected to the antennas, which are configured to selectively emit the electromagnetic signal associated with each radio chain according to distinct and different radiation patterns. The electronic circuit controls the antennas to select a radiation pattern associated with the corresponding electrical signal generated by the radio chains, which is associated with the electrical signal of a given radio chain varies according to the radiation pattern selected for the electrical signal of one or more of the other radio chains distinct from the radio chain. A method for selecting a radiation pattern associated with the antennas of a communication system.