Compound Antenna Layout for Omnidirectional Multi-Band Uplink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless terminals face challenges in achieving high uplink performance with wide-angle coverage across multiple frequency bands, particularly in regulatory compliance and efficient data transmission, especially for applications like live video streaming.
Innovation Solution
A compound antenna device configured for omnidirectional operation, comprising a first antenna system for the mm wave spectrum and a second antenna system for lower frequency bands, both enclosed in a housing, with the first system optimized for beamforming and the second for Power Class 4 performance, allowing for efficient data transmission across different frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single antenna system is used for multiple frequency bands, then device complexity is reduced, but uplink performance and wide-angle coverage cannot be achieved simultaneously
Solution Approach 1:
The antenna system is segmented into two distinct subsystems: a first antenna system with multiple first antenna elements for beamforming in higher frequency bands, and a second antenna system with multiple second antenna elements for omnidirectional coverage in lower frequency bands. This segmentation allows each subsystem to be optimized for its specific frequency range and coverage requirement, resolving the contradiction between device complexity and uplink performance.
Solution Approach 2:
Different parts of the antenna system are designed with different local qualities: the first antenna elements are configured for directional beamforming capability to achieve high gain in specific directions, while the second antenna elements are configured for omnidirectional radiation pattern to provide wide-angle coverage. This local quality differentiation enables simultaneous optimization for both uplink performance and wide coverage.
2Reliability
If beamforming is implemented for high power transmission, then uplink performance is improved, but wide-angle coverage is compromised
Solution Approach 1:
The antenna system is divided into two functional segments: the first antenna system dedicated to beamforming operations for high-power uplink transmission, and the second antenna system dedicated to omnidirectional coverage. This segmentation allows beamforming to achieve narrow, high-gain beams for distant transmission while the second system simultaneously provides wide-angle coverage, resolving the contradiction between uplink performance and coverage angle.
Solution Approach 2:
The system dynamically switches between different antenna systems based on operational requirements: the first antenna system is activated when high-power directional transmission is needed, while the second antenna system is activated when wide-angle coverage is required. This dynamic operation allows the system to adapt to different transmission scenarios, resolving the contradiction between beamforming gain and coverage width.
3Adaptability or versatility
If omnidirectional coverage is achieved across all frequency bands, then coverage versatility is improved, but uplink transmission power and gain are reduced
Solution Approach 1:
The antenna system is segmented by frequency band and coverage requirement: the second antenna system provides omnidirectional coverage for lower frequency bands where wide coverage is prioritized, while the first antenna system provides high-gain beamforming for higher frequency bands where transmission power and gain are prioritized. This frequency-based segmentation resolves the contradiction between omnidirectional coverage and transmission power.
Solution Approach 2:
Different frequency bands are assigned different local quality characteristics: lower frequency bands utilize omnidirectional antenna patterns for versatile coverage, while higher frequency bands utilize directional beamforming patterns for high-power transmission. This local quality assignment to different frequency ranges resolves the contradiction between coverage versatility and transmission power.
Data Source
AI summary
A composite antenna device (10) configured for omnidirectional operation, comprising a first antenna system (100) configured for use in a first frequency band of a first frequency range (FR2), comprising multiple first antenna elements (110, 110A) arranged in a cylindrical configuration; a second antenna system (200) configured for use in a second frequency band of a second frequency range (FR1) at a frequency which is lower than the first frequency band; and a housing (11) enclosing the first and second antenna systems, wherein the first and the second antenna systems are configured for omnidirectional operation about an axis (12) of the composite antenna device.