Suspended Metal-Strip Phase Shifter for Low-Loss Antenna Tilt
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Solution Overview
Problem
Existing phase shifters in remote electrical tilt antennas suffer from high signal energy loss, heat generation, and temperature resistance issues, affecting the performance and reliability of the antenna's network coverage.
Innovation Solution
A low-loss phase shifter design featuring a metal strip suspended within a cavity, with a sliding dielectric that alters the equivalent dielectric constant along the transmission section, reducing energy loss and heat generation by eliminating substrate-based metal strips and enhancing temperature resistance through efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a metal strip is disposed on a substrate in conventional phase shifters, then the structure is simple and easy to manufacture, but signal energy loss increases and heat generation occurs
Solution Approach 1:
The patent extracts the metal strip from the substrate, suspending it within the cavity using fasteners. This separation eliminates the substrate's negative impact on signal transmission while maintaining structural support, thereby reducing signal energy loss without compromising manufacturability.
Solution Approach 2:
The patent introduces fasteners as intermediary components to hold the metal strip in place without direct substrate contact. These fasteners act as mediators that provide mechanical support while allowing the metal strip to be suspended in a position optimized for signal transmission, reducing energy loss.
2Stability of the object's composition
If a metal strip is disposed on a substrate, then the structure is stable, but heat generated due to signal energy loss increases
Solution Approach 1:
By extracting the metal strip from the substrate and suspending it in the cavity, the patent eliminates the primary source of heat generation (substrate-based signal loss) while maintaining structural stability through the fastener support system.
3Power
If the phase shifter generates more heat, then power handling capability may increase, but temperature-resistance reliability of internal structure deteriorates
Solution Approach 1:
The patent converts the potential harm of heat generation into a benefit by reducing signal energy loss through the suspended metal strip design. This reduction in energy loss decreases heat generation, thereby improving temperature-resistance reliability while maintaining power handling capability.
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 solution achieves reduced signal energy loss, increased antenna gain, and improved temperature resistance reliability by minimizing heat generation and optimizing phase shift control, thereby enhancing the overall performance of the remote electrical tilt antenna.
Implementation Method 1
the sliding dielectric is disposed in the cavity and movable relative to the transmission portion of the metal strip. The sliding dielectric is movable relative to the metal strip, to change an area of the metal strip covered by the sliding dielectric on a transmission section between the signal input terminal and the signal output terminal. Therefore, an equivalent dielectric constant of the sliding dielectric on the transmission section between the signal input terminal and the signal output terminal is changed, thereby altering power and a phase of a signal output by the signal output terminal
Data Source
AI summary
This application relates to a phase shifter and a remote electrical tilt antenna including the foregoing phase shifter. The metal strip includes a cavity, a metal strip, a sliding dielectric, and a fastener, where the fastener fastens the metal strip in the cavity, so that a transmission portion of the metal strip is suspended in the cavity, requiring no metal strip to be disposed on a substrate, thereby reducing the signal energy loss of the substrate, decreasing the heat generated due to the signal energy loss, and lowering the requirements of the phase shifter on heat dissipation and temperature resistance of an internal mechanical part.