Antenna Choke Member Insulation Reduces PIMD
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Solution Overview
Problem
Existing antennas suffer from significant passive intermodulation distortion (PIMD) due to direct contact between metal components, which affects the beam characteristics and efficiency.
Innovation Solution
An antenna design that includes a reflection plate with insulated members separating the choke members from the plate, using a conductor connection member to indirectly connect the choke members to the reflection plate, reducing the contact area between metal components and minimizing PIMD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the choke member is directly formed on the reflection plate, then the beam characteristics can be changed, but passive intermodulation distortion (PIMD) is seriously occurred
Solution Approach 1:
An insulated member is introduced as an intermediary between the choke member and the reflection plate. This insulated member electrically isolates the two metal components, preventing direct contact that causes PIMD, while still allowing the choke member to influence beam characteristics through its proximity to the reflection plate.
2Object-generated harmful factors
If the choke member is separated from the reflection plate using an insulated member, then PIMD is reduced, but the connection between choke member and reflection plate must be established through additional components
Solution Approach 1:
The insulated member serves as a multi-functional intermediary that both electrically isolates the metal components to reduce PIMD and provides a mounting structure for the choke member. The connection member (bolt or rivet) passes through the insulated member to secure the choke member, creating a straightforward assembly process despite the added isolation layer.
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 design effectively controls beam characteristics and significantly reduces PIMD by minimizing the contact area between metal components, enhancing the antenna's performance.
Implementation Method 1
an insulated member disposed between the reflection plate and the first choke member, thereby separating the first choke member from the reflection plate, wherein the insulated member is an insulator
Implementation Method 2
a connection member configured to connect electrically the first choke member to the reflection plate through the insulated member, wherein the connection member is a conductor
Data Source
AI summary
An antenna for enhancing characteristic of a beam with reducing PIMD is disclosed. The antenna includes a reflection plate, at least one first choke member disposed on one side of the reflection plate, an insulated member disposed between the reflection plate and the first choke member, thereby separating the first choke member from the reflection plate, wherein the insulated member is an insulator, and a connection member configured to connect electrically the first choke member to the reflection plate through the insulated member, wherein the connection member is a conductor.