Multi-band Antenna Sharing High Frequency Units for Low Bands
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Solution Overview
Problem
Current wireless communication devices require multiple antennas for various frequency bands, leading to increased size and cost due to the need for separate antenna units, matching circuits, and driving circuits for each band, which complicates space optimization and interference minimization.
Innovation Solution
A multi-band antenna device that shares high frequency antenna units to implement low frequency antenna functions by connecting inductors with high frequency antenna units in series, allowing for simultaneous transmission and reception of signals across multiple frequency bands within a reduced space, thereby eliminating the need for separate low frequency antenna units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate antenna units are installed for different frequency bands, then each frequency band can be covered independently, but the device size and complexity increase
Solution Approach 1:
The patent implements a multi-band antenna that can operate across multiple frequency bands (e.g., 700MHz, 2.1GHz, 3.5GHz) using a single antenna structure. The antenna achieves this through careful design of its radiating elements and ground plane configurations, allowing one antenna to replace what would traditionally require multiple separate antennas, thereby reducing device complexity while maintaining broad frequency coverage
Solution Approach 2:
The patent combines multiple antenna functions into a single integrated antenna structure. By merging the radiating elements and optimizing their geometric configurations, the invention creates a unified antenna system that performs the functions of multiple separate antennas, reducing the overall number of components and simplifying the antenna system architecture
2Adaptability or versatility
If multiple separate antenna units are installed for different frequency bands, then each band can be optimized independently, but the space required increases
Solution Approach 1:
The patent designs a single antenna structure capable of operating across multiple frequency bands including 700MHz, 2.1GHz, and 3.5GHz bands. Through optimized radiating element geometry and ground plane design, the antenna achieves broad frequency coverage without requiring multiple separate antenna installations, thereby minimizing the space occupied by the antenna system
Solution Approach 2:
The patent employs a nested antenna configuration where multiple radiating elements are arranged in a compact, space-efficient manner. The elements are positioned and dimensioned to allow one element to effectively serve multiple frequency bands, creating a nested structure that maximizes frequency coverage within a minimized physical footprint
3Adaptability or versatility
If separate matching circuits and driving circuits are provided for each antenna unit, then each frequency band can be processed independently, but manufacturing costs increase
Solution Approach 1:
The patent combines the matching circuit and driving circuit into a single integrated circuit unit that serves multiple frequency bands. This unified circuit design eliminates the need for separate matching circuits and driving circuits for each frequency band, thereby reducing the number of components, simplifying the manufacturing process, and lowering overall manufacturing costs while maintaining the capability to process multiple frequency bands
4Reliability
If multiple antennas are installed to increase channel capacity and signal reliability, then communication quality improves, but mutual interference between antennas increases
Solution Approach 1:
The patent implements a multi-band antenna that provides diverse signal paths across multiple frequency bands through a single antenna structure. By designing the radiating elements to support multiple bands, the antenna achieves diversity reception benefits without introducing mutual interference between separate antennas, thereby maintaining signal reliability while avoiding harmful interference effects
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 solution reduces the physical space occupied by antennas and manufacturing costs by enabling efficient sharing of high frequency antenna units to cover both high and low frequency bands, improving signal quality and channel capacity while minimizing mutual interference.
Implementation Method 1
the low frequency matching circuit unit is connected between the low frequency antenna unit and the low frequency band driving circuit unit to perform an impedance matching function. The low frequency matching circuit unit matches impedance of the low frequency antenna unit with impedance of the low frequency band driving circuit unit
Implementation Method 2
The high frequency antenna unit performs a function of radiating and transmitting a signal suitable for a corresponding high frequency band or receiving a signal
Data Source
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AI summary
A multi band antenna device which can simultaneously design a first frequency band antenna and a second frequency band antenna within one wireless communication device is provided. The multi band antenna device includes a first band antenna unit that communicates a first frequency band signal, a first band driving circuit unit that is connected to the first band antenna unit and that is configured to perform signal processing of a corresponding first frequency band signal communicated in the first band antenna unit, a second band driving circuit unit that is connected to the first band antenna unit, and that is configured to perform signal processing of a second frequency band signal which has a frequency that is lower than a frequency of the first frequency band signal, and a first inductor unit that is connected between one end of the first band antenna unit and the second band driving circuit unit, and that is configured to serve as an inductor.