研究目的
To demonstrate a frequency agile inset fed microstrip patch antenna built on Barium Strontium Titanate (BST) substrate, monolithically integrated with coplanar capacitor, bias tee, and DC block capacitor, and to achieve frequency tunability with maintained gain and pattern purity.
研究成果
The study successfully demonstrated a frequency agile microstrip patch antenna on BST substrate, achieving 50MHz frequency tunability with bias voltage variation from 0V to 154V, while maintaining gain and radiation pattern purity. The simulation and measured results showed good agreement.
研究不足
The main limitation is the significant rise in DC bias voltage requirement (~200V) for the coplanar capacitor configuration, compared to MIM structure (~10V).
1：Experimental Design and Method Selection:
The design involves a microstrip patch antenna on a BST thick film hosted by a Quartz substrate, using SolGel method for BST film realization.
2：Sample Selection and Data Sources:
The BST film is characterized using C-V measurements.
3：List of Experimental Equipment and Materials:
Includes a
4：5μm thick Ba6Sr4TiO3 film, 1mm Quartz substrate, and vector network analyzer (VNA) Agilent E8363B for measurements. Experimental Procedures and Operational Workflow:
The antenna is designed and simulated using Ansys Designer 2014, followed by prototype development and characterization.
5：Data Analysis Methods:
Scattering parameter (S11) measurements are performed to evaluate frequency tunability.
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