Tunable Resonant UWB Amplifier for Low-Power Channel Selection
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Solution Overview
Problem
Existing ultra-wideband (UWB) signal amplifiers have high circuit complexity and power consumption due to their need to amplify a wide frequency range, which limits their implementation and range in UWB systems.
Innovation Solution
A narrowband UWB signal amplifier with a resonant circuit and controllable switches, controlled by a controller, that selects specific transmission channels within the UWB frequency band, reducing circuit complexity and power consumption by amplifying only the necessary frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wideband amplifier is used to amplify the entire UWB signal spectrum, then the frequency bandwidth coverage is improved, but the circuit complexity increases
Solution Approach 1:
The UWB frequency spectrum is divided into multiple narrowband channels (e.g., 15 channels from 3.1 to 10.6 GHz), and the amplifier selectively amplifies only the currently active channel instead of the entire bandwidth. This segmentation approach reduces circuit complexity while maintaining the ability to cover the full UWB range through channel hopping.
Solution Approach 2:
The amplifier uses a dynamically adjustable resonant circuit with variable resonant frequency that can be tuned to match the currently active transmission channel. This dynamic adjustment allows the amplifier to adapt to different frequency bands as the transmitter hops between channels, maintaining effective amplification across the entire UWB spectrum without requiring a complex wideband amplifier design.
2Adaptability or versatility
If a wideband amplifier is used to amplify the entire UWB signal spectrum, then the frequency bandwidth coverage is improved, but the power consumption increases
Solution Approach 1:
Instead of continuously amplifying the entire UWB spectrum, the amplifier segments the frequency band into discrete channels and amplifies only the active channel at any given time. This reduces power consumption significantly since the amplifier operates at full power for a narrow bandwidth rather than distributing power across the entire spectrum.
Solution Approach 2:
The amplifier operates in synchronization with the periodic channel hopping scheme, activating its amplification function only when a specific channel is being transmitted. This periodic operation pattern reduces average power consumption while maintaining coverage of the entire UWB spectrum over time through the coordinated channel hopping between transmitter and receiver.
3Adaptability or versatility
If the entire UWB frequency band is divided into multiple transmission channels, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The amplifier employs a dynamically tunable resonant circuit that can be adjusted to resonate at different frequencies corresponding to different transmission channels. This dynamic frequency adjustment capability enables the amplifier to support multiple channels without requiring separate amplifier circuits for each channel, thus maintaining low device complexity while achieving high adaptability.
Solution Approach 2:
A single amplifier circuit is designed to perform multiple functions by tuning its resonant frequency to match different transmission channels. This universal amplifier can amplify signals across the entire UWB spectrum by sequentially adjusting its resonant frequency, eliminating the need for multiple specialized amplifiers and reducing overall device complexity.
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
The solution results in a simpler circuit design with lower power consumption, enabling efficient and low-power operation of UWB receivers, allowing for longer range and reduced power usage in UWB systems.
Implementation Method 1
a resonant circuit which is connected to the transistor and whose resonant frequency can be set for the purpose of selecting the transmission channel
Data Source
AI summary
Amplifier for an ultra-wideband (UWB) signal receiver having a signal input (15) for receiving an ultra-wideband signal which is sent by a transmitter (1) and which is transmitted in a sequence of transmission channels (K.sub.i) (which each have a particular frequency bandwidth) which has been agreed between the transmitter (1) and the receiver (4); a transistor (18) whose control connection is connected to the signal input (15); a resonant circuit (26, 30, 31) which is connected to the transistor (18) and whose resonant frequency can be set for the purpose of selecting the transmission channel (K.sub.i) in line with the agreed sequence of transmission channels; and having a signal output (29) for outputting the amplified ultra-wideband signal, the signal output being tapped off between the transistor (18) and the resonant circuit.