SIP Receiver Reducing Filter Bank Complexity
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Solution Overview
Problem
Developing wide-band RF receivers that span greater than one octave of bandwidth is challenging due to the need for multiple pre-select filters and IF filters, which consume significant volume and power, and are complex to design and implement effectively.
Innovation Solution
A multi-layer balun structure with a low-noise amplifier is used to suppress second-order distortion products across a wide frequency range, allowing for a single pre-select filter and a single IF filter, while integrating components into a system-in-package (SIP) design to reduce size and power consumption, and selecting high IF and local oscillator frequencies to minimize unwanted images and signal spurs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple pre-select filters and IF filters are used to suppress unwanted images and spurs in wide-band RF receivers, then the dynamic range and signal quality are improved, but the device complexity, volume, and power consumption increase significantly
Solution Approach 1:
The patent extracts and eliminates unnecessary filters from the traditional filter bank architecture. By using a single pre-select filter followed by a single IF filter, the invention removes redundant filtering stages while maintaining suppression of unwanted images and spurs through alternative means (system-in-package integration and frequency planning), thereby reducing device complexity while preserving dynamic range.
Solution Approach 2:
The patent merges multiple filter functions into a simplified architecture with only one pre-select filter and one IF filter. This consolidation is achieved by integrating the receiver components into a system-in-package (SIP) structure, which combines multiple functional elements into a unified compact system, reducing overall complexity while maintaining filtering performance.
2Reliability
If multiple pre-select filters and IF filters are used to suppress unwanted images and spurs, then the signal quality is improved, but the volume and power consumption of the receiver increase
Solution Approach 1:
The patent merges multiple filtering functions into a compact system-in-package (SIP) architecture that requires only one pre-select filter and one IF filter. This integration consolidates what would traditionally require multiple discrete filter components into a unified compact system, significantly reducing the overall volume while maintaining the ability to suppress unwanted images and spurs.
Solution Approach 2:
The system-in-package (SIP) architecture provides multi-functionality by integrating multiple receiver components including filters, amplifiers, and mixing stages into a single compact package. This universal integration approach allows the reduced filter bank to achieve the same signal quality performance as traditional multi-filter designs while occupying significantly less volume.
3Reliability
If multiple pre-select filters and IF filters are used to suppress unwanted images and spurs, then the dynamic range is improved, but the power consumption of the receiver increases
Solution Approach 1:
The patent extracts and removes redundant filter stages from the traditional architecture, keeping only one pre-select filter and one IF filter. This elimination of unnecessary filtering components directly reduces the total power consumption of the receiver while maintaining dynamic range performance through the integrated SIP design and optimized frequency planning.
Solution Approach 2:
The patent merges multiple filtering operations into a simplified path with minimal filters, integrated within a system-in-package (SIP) architecture. This consolidation reduces the cumulative power consumption of multiple discrete filter components while preserving the dynamic range through efficient integration and coordinated operation of the remaining filtering stages.
4Adaptability or versatility
If a wide tuning range spanning greater than one octave is implemented, then the versatility and frequency coverage are improved, but the device complexity and difficulty of design increase
Solution Approach 1:
The system-in-package (SIP) architecture provides a universal platform that handles wide frequency coverage (greater than one octave) through integrated multi-functional components. The SIP design consolidates filtering, amplification, and mixing functions into a unified system that can operate across broad frequency ranges without requiring complex external component assemblies, thereby improving versatility while managing design complexity.
Solution Approach 2:
The patent merges multiple receiver functions into a single integrated system capable of wide frequency tuning. By combining the pre-select filter, IF filter, and other receiver stages into a coordinated SIP architecture, the design achieves greater than one octave frequency coverage without the complexity of multiple independent filter banks, simplifying the overall design process.
Data Source
AI summary
A communications receiver. One example embodiment is a system-in-package (SIP) device, which includes a three-dimensional interposer, a first bandpass filter integrated into the three-dimensional interposer, a first integrated circuit chip on the three-dimensional interposer, a second integrated circuit chip on the three-dimensional interposer, a second bandpass filter integrated into the three-dimensional interposer, and a third bandpass filter integrated into the three-dimensional interposer. The first integrated circuit chip includes a balanced amplifier that receives a first filtered signal and suppress distortion products. The second integrated circuit chip includes a first mixer and a second mixer. The first mixer receives an output of the balanced amplifier and mixes the output with a first oscillator signal. The second bandpass filter receives an output from the first mixer and generates a second filtered signal. The second mixer receives the second filtered signal and mixes the second filtered signal with a second oscillator signal.