Dual-band Phased Array Resource Sharing
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Solution Overview
Problem
Dual-band phased arrays waste system resources as two frequency bands operate independently, leading to redundancy and inefficient resource utilization.
Innovation Solution
A dual-band phased array design incorporating a frequency modulation module, phase shift module with couplers and phase shifters, and a switch to share resources between frequency bands, allowing series-feed phase shifting and directional coupling to implement dual bands efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two frequency bands are implemented using separate phase-shift channels with independent resources, then each frequency band can operate independently, but system resources are wasted and redundancy increases
Solution Approach 1:
The patent implements a shared phase-shift channel that can serve multiple frequency bands. The same phase-shift channel is used for both first and second frequency bands, allowing the system to switch between bands without requiring separate dedicated resources. This multi-functional approach eliminates resource redundancy while maintaining the ability to operate independently at each frequency band through switching mechanisms.
2Adaptability or versatility
If a conventional dual-band phased array uses separate phase-shift channels for two frequency bands, then frequency band independence is achieved, but system resources are not optimized
Solution Approach 1:
The patent merges the phase-shift channels for different frequency bands into a single shared resource. Instead of having separate phase-shift channels for the first and second frequency bands, the system uses one common phase-shift channel that can be dynamically allocated to different bands. This combining approach optimizes resource utilization efficiency by eliminating duplicate resources while preserving frequency band independence through switching control.
Data Source
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AI summary
Embodiments of the present invention disclose a dual-band phased array, to resolve a prior-art problem that two frequency bands in a dual-band phased array independently occupy resources, thereby saving system resources. The dual-band phased array includes a frequency modulation module, and a phase shift module connected to the frequency modulation module, where the frequency modulation module is configured to perform frequency modulation between a baseband signal and an intermediate frequency signal; and the phase shift module is configured to perform series-feed phase shifting between the intermediate frequency signal and a series-fed phase-shifted signal, the phase shift module includes a first coupler and a phase shifter, the first coupler is serially connected to the phase shifter, the first coupler is configured to perform directional coupling between the intermediate frequency signal and the series-fed phase-shifted signal, and the phase shifter is configured to perform phase shifting between the intermediate frequency signal and the series-fed phase-shifted signal.