Multi-Port Distributed Antenna Impedance Matching
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Solution Overview
Problem
Conventional mobile wireless communication devices face power inefficiencies in their transmitters and receivers, which significantly impact battery life due to high power consumption, especially in systems where these components are not optimized for low impedance matching.
Innovation Solution
A multi-port distributed antenna system is implemented, where amplifiers are impedance matched to specific ports based on characteristic impedance, allowing for efficient communication of RF signals through time division duplexing, and can be integrated on a chip or external to it, utilizing power amplifiers and low noise amplifiers to optimize signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional transmitters and receivers are used in mobile wireless devices, then communication functionality is provided, but power consumption is high which significantly impacts battery life
Solution Approach 1:
The patent changes the impedance parameter of the antenna system by providing multiple ports with different characteristic impedances (e.g., 50 ohms, 75 ohms, 100 ohms) to match different amplifier types. This parameter optimization enables more efficient power transfer and reduces power consumption in the transmitter and receiver circuits, directly addressing the energy efficiency issue.
Solution Approach 2:
The antenna is segmented into multiple ports, each with different characteristic impedances, allowing different amplifiers to be connected to different ports based on their impedance requirements. This segmentation enables optimized power efficiency for each communication function without requiring a single compromised design.
2Use of energy by moving object
If transmitters and receivers are optimized for low impedance matching, then power efficiency improves, but additional impedance matching circuitry increases device complexity
Solution Approach 1:
The distributed antenna structure serves multiple functions simultaneously: it acts as the radiating element, provides impedance transformation through its distributed nature, and offers multiple ports with different characteristic impedances for direct connection to various amplifiers. This eliminates the need for separate impedance matching circuitry for each amplifier type.
Solution Approach 2:
The patent merges the antenna function with the impedance matching function by designing a distributed antenna where the transmission line structure itself provides the necessary impedance transformation. The distributed antenna is coupled directly to amplifiers with matching impedances, combining what would traditionally be separate components into a unified structure.
3Adaptability or versatility
If a single antenna port is used, then device complexity is reduced, but the ability to handle multiple wireless protocols and standards simultaneously is limited
Solution Approach 1:
The antenna is divided into multiple ports along its length, each with different characteristic impedances. This segmentation allows different wireless protocols and standards to be connected to different ports simultaneously, enabling multi-protocol support while maintaining a relatively simple distributed structure.
Solution Approach 2:
Different portions of the distributed antenna have different characteristic impedances tailored to specific protocol requirements. This local quality optimization allows each port to be optimized for its intended protocol while the overall antenna structure remains simple and integrated.
Data Source
AI summary
Methods and systems for a multi-port distributed antenna are disclosed and may include configuring one or more amplifiers to communicate signals via one or more ports on a distributed antenna. A characteristic impedance of the distributed antenna at each of the one or more ports may be configured by a location of the one or more ports on the distributed antenna. The amplifiers may be impedance matched to the distributed antenna by coupling each of the amplifiers to the ports based on the characteristic impedance. The amplifiers may include power amplifiers and/or low noise amplifiers. The signals may be time division duplexed. The signals communicated via the ports on the distributed antenna may include RF signals. The distributed antenna may be integrated on a chip with the amplifiers or may be located external to a chip with the amplifiers. The distributed antenna may include a microstrip antenna.