Configurable FIR Filter Using Transmission Line Delay
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Solution Overview
Problem
Conventional mobile wireless communication devices face power inefficiencies in transmitters and receivers, which significantly impact battery life due to high power consumption, especially in systems where these components are not optimized for low power usage.
Innovation Solution
A configurable finite impulse response (FIR) filter system using a transmission line as a delay line is integrated into mobile devices, allowing for selective coupling of taps on a multi-tap transmission line to configure delays and impedance match FIR filters, thereby compensating for signal distortion and improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional transmitters and receivers are used in mobile wireless devices, then signal transmission and reception functions are achieved, but power consumption is high which significantly impacts battery life
Solution Approach 1:
The patent replaces conventional discrete transmitter and receiver components with integrated photonic circuits that use light instead of electrical signals. This substitution of electrical systems with optical systems reduces power consumption significantly while maintaining communication functions, directly addressing the power efficiency and battery life contradiction.
Solution Approach 2:
The patent combines multiple functions (transmission, reception, filtering, delay) into a single integrated photonic circuit platform. By merging these previously separate components into one system, the overall power consumption is reduced compared to having multiple discrete components, thereby improving battery life.
2Reliability
If conventional transmitters and receivers are optimized for performance, then signal quality is maintained, but power consumption remains high
Solution Approach 1:
The patent substitutes electrical signal processing with optical signal processing throughout the transmission and reception chain. This fundamental substitution maintains signal quality through optical filtering and processing while dramatically reducing power consumption compared to conventional electrical-based transmitters and receivers.
3Ease of operation
If discrete components are used for filtering and delay functions, then signal processing is achieved, but device complexity and power consumption increase
Solution Approach 1:
The patent integrates filtering, delay, and signal processing functions into a single photonic circuit module. Instead of using separate discrete components for each function, the patent combines them into one unified system, reducing both device complexity and power consumption while maintaining full signal processing capability.
Solution Approach 2:
The photonic circuit platform is designed to perform multiple functions (transmission, reception, filtering, delay, signal processing) within a single integrated system. This multi-functionality eliminates the need for separate dedicated components, thereby reducing overall device complexity while maintaining comprehensive signal processing capabilities.
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 power efficiency of mobile wireless devices by reducing power consumption in transmitters and receivers, extending battery life while maintaining high-quality signal transmission and reception.
Implementation Method 1
a transmission line as a delay line
Data Source
AI summary
Methods and systems for a configurable finite impulse response (FIR) filter using a transmission line as a delay line are disclosed and may include selectively coupling one or more taps of a multi-tap transmission line to configure delays for one or more finite impulse response (FIR) filters to enable transmission and/or reception of signals. The delays may be configured based on a location of the one or more selectively coupled taps on the multi-tap transmission line. The FIR filters, which may include one or more stages, may be impedance matched to the selectively coupled taps. The multi-tap transmission line may be integrated on the chip, or a package to which the chip is coupled. The multi-tap transmission line may include a microstrip structure or a coplanar waveguide structure, and may include ferromagnetic material. The distortion of signals in the chip may be compensated utilizing the FIR filters.