Multi-Mode Mobile Terminal Antenna for Full-Band ENDC
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Solution Overview
Problem
Mobile terminals face limitations in accommodating multiple antennas due to space constraints and electromagnetic interference, restricting them to support only specific bands in ENDC mode, preventing full-band 4G LTE and 5G NR low-frequency dual connectivity.
Innovation Solution
The mobile terminal incorporates a first antenna with a first and second branch, and additional antennas, allowing for full-band 4G LTE and 5G NR dual connectivity or carrier aggregation, and partial-band 5G NR and GPS L5 dual connectivity by optimizing antenna placement and operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are installed to support full-band ENDC mode, then communication coverage is improved, but device volume and electromagnetic interference increase
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated antenna structure. The first antenna is designed to support both first band signals (4G LTE) and second band signals (5G NR) through multiple operation modes, eliminating the need for separate antennas for each band and reducing overall device volume.
Solution Approach 2:
The first antenna is designed as a multi-functional antenna that can operate in multiple modes to support different frequency bands. It can simultaneously or alternatively support first operation mode for 4G LTE and second operation mode for 5G NR, making a single antenna structure capable of performing multiple communication functions.
2Adaptability or versatility
If multiple antennas are installed to support full-band ENDC mode, then communication coverage is improved, but electromagnetic interference increases
Solution Approach 1:
By merging multiple antenna functions into a single antenna structure, the patent eliminates the electromagnetic interference that would occur between multiple separate antennas. The integrated design ensures that only one antenna structure exists to handle all band signals, removing the source of inter-antenna interference.
Solution Approach 2:
The patent extracts and eliminates the harmful electromagnetic interference by designing a single antenna system that handles multiple bands, rather than having multiple antennas that would interfere with each other. The harmful factor of inter-antenna interference is removed by taking out the multiple antenna configuration.
3Volume of stationary object
If antenna structure is simplified to reduce volume, then device compactness is improved, but frequency band coverage is reduced
Solution Approach 1:
The patent applies dynamic operation modes to a single antenna structure. The first antenna can switch between or combine multiple operation modes (first operation mode for 4G LTE, second operation mode for 5G NR) to dynamically adapt to different frequency band requirements, maintaining full-band coverage without requiring multiple fixed-configuration antennas.
Solution Approach 2:
The single antenna structure is designed with universal capability to support multiple frequency bands through different operation modes. This multi-functional design allows one compact antenna to replace what would traditionally require multiple larger antennas, achieving both volume reduction and maintained frequency coverage.
Data Source
AI summary
Provided is an antenna device. The antenna device includes a first antenna. The first antenna includes a first radiator. The first radiator includes a first branch and a second branch that are connected to each other. The second branch bends and extends from an end of the first branch. The first antenna supports both a first operation mode and a second operation mode. The first antenna covers a bandwidth greater than 190 MHz by using the first operation mode and the second operation mode together. In addition, a mobile terminal is provided.