Photodiode Integrated Antenna With Wideband Impedance Matching
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Solution Overview
Problem
Current communication systems face challenges in achieving high capacity and speed while maintaining a compact size and low cost, particularly in broadband communication systems where the performance of photoelectric devices with broad frequency response is inadequate.
Innovation Solution
An integrated antenna is designed with a photodiode on an antenna substrate, connected to an antenna radiating body that includes an impedance matching structure and a choke structure, integrated on a dielectric substrate with a reflecting plate and lens, enhancing wideband performance through high integration and compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If photoelectric devices with broad frequency response are used in broadband communication systems, then communication capacity and speed are improved, but device size and cost increase
Solution Approach 1:
The patent combines the photodiode and antenna into a single integrated structure where the antenna radiating body is directly formed on the photodiode substrate. This merging eliminates the need for separate mounting and connection components, achieving compact size while maintaining broadband performance capability
Solution Approach 2:
The integrated antenna structure serves multiple functions: the photodiode converts optical signals to electrical signals, while the antenna radiating body simultaneously provides both receiving and transmitting functions across broad frequency bands. The impedance matching structure and choke structure are integrated into the same substrate, making the device multi-functional without requiring additional components
2Productivity
If photoelectric devices with broad frequency response are used in broadband communication systems, then communication capacity and speed are improved, but device cost increases
Solution Approach 1:
The patent combines the photodiode and antenna into a single integrated structure where the antenna radiating body is directly formed on the photodiode substrate. This merging eliminates the need for separate mounting and connection components, achieving compact size while maintaining broadband performance capability
Solution Approach 2:
The integrated antenna structure serves multiple functions: the photodiode converts optical signals to electrical signals, while the antenna radiating body simultaneously provides both receiving and transmitting functions across broad frequency bands. The impedance matching structure and choke structure are integrated into the same substrate, making the device multi-functional without requiring additional components
3Adaptability or versatility
If antenna radiating body is integrated on photodiode substrate, then wideband performance is improved, but device complexity increases
Solution Approach 1:
The patent combines the photodiode and antenna into a single integrated structure where the antenna radiating body is directly formed on the photodiode substrate. This merging eliminates the need for separate mounting and connection components, achieving compact size while maintaining broadband performance capability
Solution Approach 2:
The patent employs impedance matching structures and choke structures with specific geometric parameters (such as squarewave-like folded line structures with multiple turns of rectangular metal strips) to achieve broadband impedance matching and signal isolation. By optimizing these geometric parameters, the device achieves wideband performance through parameter optimization rather than structural 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 integrated antenna achieves improved wideband performance, reliable operation, and ease of use, suitable for the photoelectric emission front end of broadband communication systems, with increased gain and directivity.
Implementation Method 1
a photodiode disposed on the antenna substrate and including two electrodes
Implementation Method 2
an antenna radiating body disposed on the antenna substrate, where the antenna radiating body is connected with the two electrodes
Implementation Method 3
a reflecting plate disposed on an upper surface of the dielectric substrate, and the integrated antenna is located directly over the reflecting plate
Data Source
AI summary
The present application provides an integrated antenna and an antenna apparatus. The integrated antenna includes an antenna substrate, a photodiode and an antenna radiating body. The photodiode is disposed on the antenna substrate and includes two electrodes. The antenna radiating body is disposed on the antenna substrate and connected with the two electrodes. The antenna radiating body is disposed on an upper surface of the photodiode.