Double-Slotted Loop Antenna Structure for Smaller Tunable RF Modules
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Solution Overview
Problem
Current RF module designs face challenges in reducing size and cost while maintaining effective RF signal transmission and reception, often requiring complex antenna structures and impedance matching circuits that are costly and inflexible.
Innovation Solution
The proposed solution involves a partitioned antenna structure where parts of the resonator and radiator are integrated within an RF module, while the remaining components are fabricated externally, allowing for flexible tuning and reduced module size, and uses lumped components for impedance matching, eliminating the need for chip antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complete integrated antenna structure is used within the RF module, then RF signal transmission and reception effectiveness is improved, but module size and cost increase
Solution Approach 1:
The antenna system is divided into two parts: an integrated resonator portion within the RF module and an external radiator portion. This segmentation allows the module to maintain compact size while achieving effective RF transmission through the combined structure.
Solution Approach 2:
The radiator portion is extracted from the RF module and implemented externally, reducing the module's internal space requirements while maintaining the antenna's overall functionality for effective RF signal transmission and reception.
2Reliability
If complex antenna structures and impedance matching circuits are used, then RF transmission effectiveness is improved, but manufacturing cost increases
Solution Approach 1:
The antenna system is segmented into an integrated resonator and external radiator, allowing simplified manufacturing of each component while maintaining overall RF transmission effectiveness through their combined operation.
Solution Approach 2:
Impedance matching is achieved by adjusting the coupling between the resonator and radiator components, using parameter optimization rather than complex matching circuits, thereby reducing manufacturing cost while maintaining RF transmission effectiveness.
3Device complexity
If chip antennas are used, then module integration is improved, but flexibility and tuning capability are reduced
Solution Approach 1:
The antenna is segmented into an integrated resonator portion and an external radiator portion, combining the benefits of integration with the flexibility of external components that can be adjusted for tuning.
Solution Approach 2:
The external radiator component provides dynamic tuning capability, allowing the antenna system to be adjusted for different frequencies and applications while maintaining integration with the RF module through the coupled resonator.
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 approach enables efficient tuning of the antenna, reduces module size, and lowers costs by allowing for smaller, more flexible RF module designs with improved RF transmission and reception capabilities.
Implementation Method 1
first and second inductive-capacitive (LC) resonant networks that are coupled to the printed monopole antenna
Implementation Method 2
a double slotted loop coupled to the first and second LC resonant networks
Data Source
AI summary
An apparatus includes a module. The module includes an antenna structure. The antenna structure includes a printed monopole antenna. The antenna structure further includes first and second inductive-capacitive (LC) resonant networks that are coupled to the printed monopole antenna. The antenna structure further includes a double slotted loop coupled to the first and second LC resonant networks.