Integrated Glass Antenna Layout for Vehicle Broadcast Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The limited size of loop antennas on vehicles restricts the installation of additional antenna modules due to space constraints, particularly with the increasing need for vehicle-connected services, leading to insufficient space for accommodating more antenna modules.
Innovation Solution
An integrated glass antenna system is implemented to free up space in the loop antenna, allowing for the installation of additional modules by receiving both radio and digital broadcast signals and using signal processing techniques to cancel harmonic components, thereby enabling the installation of communication antenna modules like 5G (MIMO) and V2X modules without increasing the loop antenna's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a loop antenna is installed to protrude from the roof of the vehicle, then communication and broadcast reception functions are provided, but the size of the loop antenna is limited due to resistance and design factors during vehicle driving
Solution Approach 1:
The patent combines the digital broadcasting antenna and radio broadcasting antenna into a single integrated glass antenna structure. The glass antenna is formed by conducting patterns on the vehicle's glass surface, allowing both digital and radio broadcast signals to be received through one unified structure, thereby eliminating the need for separate antenna modules and freeing up space on the loop antenna for additional communication modules.
Solution Approach 2:
The glass antenna serves multiple functions by simultaneously receiving both digital broadcast signals and radio broadcast signals. The conducting patterns on the glass are designed to capture both types of broadcast signals, making the single glass antenna structure universal for multiple reception purposes and reducing the overall antenna system complexity.
2Adaptability or versatility
If more antenna modules are disposed on the vehicle due to the increase of vehicle connected service, then communication service capability is enhanced, but space for installing additional antenna modules becomes insufficient due to the limitation of the size of the loop antenna
Solution Approach 1:
By merging the digital and radio broadcasting antenna functions into a single glass antenna structure, the patent frees up valuable space on the loop antenna. This consolidated approach allows the loop antenna to accommodate additional communication antenna modules (such as 5G, V2X, or other wireless communication modules) without increasing the overall vehicle antenna system footprint.
3Area of stationary object
If an integrated glass antenna is implemented to receive both radio and digital broadcast signals, then space in the loop antenna is freed up, but harmonic components of the radio broadcast signal interfere with the digital broadcast signal reception
Solution Approach 1:
The patent extracts the harmonic components of the radio broadcast signal from the received signal mixture. A bandpass filter is used to isolate and extract the harmonic frequencies generated by the radio broadcast receiver, separating them from the digital broadcast signal path so they can be removed before causing interference.
Solution Approach 2:
The patent converts the harmful harmonic interference into a removable component by extracting it through filtering. The extracted harmonic signal is then inverted in phase and added back to the original signal path, effectively canceling out the interference through destructive interference. This transforms the harmful harmonic components into a mechanism for their own elimination.
Solution Approach 3:
The system uses feedback by extracting the harmonic components, inverting their phase, and feeding them back into the signal path. This feedback mechanism allows the system to automatically cancel the harmonic interference that would otherwise degrade digital broadcast reception quality.
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 enhances the vehicle's antenna capacity without enlarging the loop antenna, improves signal reception quality, and reduces mutual interference between communication and broadcasting modules by using an integrated glass antenna to process both radio and digital signals effectively.
Implementation Method 1
a broadcasting receiver configured to receive the first broadcast signal and the second broadcast signal transmitted from the glass antenna, and to cancel and remove a harmonic components of the first broadcast signal from the second broadcast signal
Data Source
AI summary
An antenna system of a vehicle includes a glass antenna installed on a surface of a glass of the vehicle, configured to receive a first broadcast signal and a second broadcast signal; and a broadcasting receiver configured to receive the first broadcast signal and the second broadcast signal, and to cancel and remove a harmonic components of the first broadcast signal from the second broadcast signal. The antenna system can ensure a free space of a loop antenna by implementing an integrated glass antenna, and realize installing an additional antenna module in the free space of the loop antenna.