Parallel Rectifier Array for High-Frequency Electromagnetic Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Detecting devices that use an antenna and semiconductor rectifying devices, such as Schottky barrier diodes, face limitations in detecting high-frequency electromagnetic waves due to increased device resistance, which restricts the frequency band and sensitivity, especially in the 30 GHz to 30 THz range.
Innovation Solution
The solution involves configuring multiple semiconductor rectifying devices in parallel with aligned polarity and positioning them to receive electromagnetic waves at the same phase, reducing the overall device resistance and improving sensitivity by maintaining the cutoff frequency without reducing the detectable frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the junction area of the semiconductor rectifying device is decreased to increase the cutoff frequency, then the cutoff frequency increases, but the device resistance increases
Solution Approach 1:
Multiple semiconductor rectifying devices are connected in parallel to combine their electrical characteristics. This merging approach maintains the small junction area needed for high cutoff frequency while reducing the overall device resistance through parallel connection, resolving the contradiction between high cutoff frequency and low device resistance
Solution Approach 2:
The invention transitions from a single-device approach to a multi-device parallel architecture, adding the dimension of spatial arrangement and phase synchronization. By positioning devices at specific locations where electromagnetic wave phases align, the system achieves both high cutoff frequency and low resistance through constructive interference and parallel conduction paths
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 configuration reduces the device resistance, enhancing the electric power efficiency and sensitivity of the detecting device while maintaining the cutoff frequency, allowing for effective detection of electromagnetic waves across the 30 GHz to 30 THz band.
Implementation Method 1
an antenna configured to receive electromagnetic waves; and a plurality of semiconductor rectifying devices serially connected to the antenna, and connected in parallel to each other such that the polarity is aligned, so as to receive electromagnetic waves propagated from the antenna
Implementation Method 2
rectifies the high frequency signal received by an antenna or the like with a semiconductor rectifying device such as a Schottky barrier diode or the like, and detects the current flow at that time
Implementation Method 3
the function of an RC low-pass filter is formed of junction capacity Cj in the Schottky barrier and serial resistance Rs. That is to say, high frequency components of the signal are cut off by the function of the RC low-pass filter
Data Source
AI summary
A detecting device which detects electromagnetic waves includes an antennal configured to receive electromagnetic waves, and a plurality of semiconductor rectifying devices serially connected to the antenna, and connected in parallel to each other such that the polarity is aligned, so as to receive electromagnetic waves propagated from the antenna, wherein the plurality of semiconductor rectifying devices are each disposed at positions where the phase of electromagnetic waves propagated from the antenna is substantially the same phase.