Integrated Antenna Amplifier with Digital Gain Control
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Solution Overview
Problem
Current antenna amplifiers in motor vehicles require multiple cables for each antenna, leading to high material and installation costs due to the complexity of connecting multiple antennas for AM/FM/DAB ranges.
Innovation Solution
An integrated antenna amplifier with multiple signal inputs and digital control signals allows for monolithic integration on a semiconductor chip, featuring separate amplifier circuits with automatic gain control and a summator to combine signals and reduce amplification via digital command signals, thereby reducing the number of cables needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate antenna amplifiers are used for AM/FM/DAB ranges, then each antenna can be independently controlled, but the number of cables and connection complexity increases significantly
Solution Approach 1:
The patent combines multiple antenna amplifier circuits (AM, FM, DAB) into a single integrated antenna amplifier unit with a common signal input. This merging approach reduces the number of cables required while maintaining independent control capability through separate control inputs for each amplifier circuit.
Solution Approach 2:
The antenna amplifier is designed as a multi-functional device that can amplify signals for multiple broadcast ranges (AM, FM, DAB) simultaneously. The single device performs multiple functions that previously required separate amplifiers, reducing system complexity while preserving adaptability.
2Reliability
If multiple separate antenna amplifiers are used, then each amplifier can be optimized for its specific function, but material costs and installation costs increase
Solution Approach 1:
Multiple amplifier circuits are merged into a single integrated unit, reducing the quantity of separate components, cables, and installation materials required. The unified structure maintains optimized signal amplification for each broadcast range through dedicated control inputs.
3Device complexity
If a single integrated antenna amplifier is used, then the number of cables is reduced, but controlling multiple amplifier circuits becomes more complex
Solution Approach 1:
The control system is segmented into separate control inputs for each amplifier circuit (AM control input, FM control input, DAB control input). This segmentation allows independent control of each amplifier circuit despite their physical integration, simplifying operation while maintaining reduced cable quantity.
4Quantity of substance
If separate amplifier circuits are integrated in one unit, then cable quantity is reduced, but heat dissipation and signal interference may increase
Solution Approach 1:
Each amplifier circuit within the integrated unit is provided with independent control inputs and can be controlled separately. This local quality approach allows optimized signal processing for each broadcast range while maintaining physical integration benefits, and enables independent adjustment to minimize interference between circuits.
Data Source
AI summary
An antenna amplifier, receiving system, operating method, and use of a receiving system, is provided. The antenna amplifier includes a first signal input and a second signal input for connecting antennas, a first amplifier circuit connected to the first signal input and having a first digital control signal input for receiving a first digital control signal for setting an amplification of the first amplifier circuit and a first signal output, a second amplifier circuit connected to the second signal input and having a second digital control signal input for receiving a second digital control signal for setting an amplification of the second amplifier circuit and a second signal output, a summator connected to the first signal output and the second signal output for outputting a sum signal to a sum signal output, and a digital gain controller with a digital command signal input for receiving a digital command signal and a digital control signal output for outputting the first digital control signal and the second digital control signal.