Omnidirectional Antenna System for Concurrent 5 GHz Macro-Macro Cell Deployment
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Solution Overview
Problem
Conventional wireless access points experience degraded performance when two co-located radios operate within the same band, such as the 5 GHz band, due to insufficient isolation, limiting their ability to provide macro-macro cell deployment without interference.
Innovation Solution
The antenna system employs a combination of vertically polarized omnidirectional monopole antennas and horizontally polarized omnidirectional dipole antennas, maintaining at least 40 dB of isolation between radios, enabling concurrent 5 GHz radio operation and extending up to 7.125 GHz, facilitating macro-macro cell deployment without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two co-located radios operate within the same band, then concurrent band operation capability is improved, but performance degradation occurs due to insufficient isolation
Solution Approach 1:
The patent introduces polarization as an additional dimension for radio separation. By using one vertically polarized omnidirectional antenna and one horizontally polarized omnidirectional antenna, the system creates isolation between co-located radios operating in the same band, enabling concurrent operation without performance degradation
2Device complexity
If conventional antennas are used for co-located radios, then device complexity is reduced, but isolation between antennas is insufficient
Solution Approach 1:
The patent applies different polarization characteristics to different antennas - one antenna is vertically polarized while the other is horizontally polarized. This local differentiation in polarization quality provides the necessary isolation between co-located radios without requiring complex spatial separation or additional shielding structures
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 configuration ensures effective isolation and concurrent operation of dual radios within the same bandwidth, enhancing the performance of wireless access points by maintaining at least 40 dB of isolation and supporting macro-macro cell deployment, thus preventing interference and improving coverage area.
Implementation Method 1
a first omnidirectional antenna for coupling to a first radio to establish a first macro cell and a second omnidirectional antenna for coupling to a second radio to establish a second macro cell. The omnidirectional antennas are configured for concurrent 5 GHz radio operation while maintaining at least 40 dB of isolation between the omnidirectional antennas
Implementation Method 2
The first antenna is vertically polarized and the second antenna is horizontally polarized
Data Source
AI summary
In one embodiment, an apparatus includes a first omnidirectional antenna for coupling to a first radio to establish a first macro cell and a second omnidirectional antenna for coupling to a second radio to establish a second macro cell. The first and second omnidirectional antennas are configured for concurrent 5 GHz radio operation while maintaining at least 40 dB of isolation between the first and second omnidirectional antennas. An antenna system and network device are also disclosed herein.