Compact double-p slotted inset-fed microstrip patch antenna on high dielectric substrate

Area of Science:

• Electrical Engineering
• Electromagnetics
• Antenna Theory

Background:

• Microstrip patch antennas are widely used due to their low profile and ease of integration.
• High dielectric constant substrates are often employed to reduce antenna size.
• Slotting techniques can be used to enhance antenna bandwidth and performance.

Purpose of the Study:

• To design and fabricate a compact inset-fed rectangular microstrip patch antenna.
• To embed double-P slots for improved performance.
• To evaluate the antenna's suitability for GPS and C-band applications.

Main Methods:

• Antenna design and simulation using electromagnetic simulation software.
• Fabrication on a ceramic-PTFE composite substrate with a high dielectric constant.
• Performance characterization through reflection coefficient, gain, and radiation pattern measurements.

Main Results:

• Achieved -10 dB reflection coefficient bandwidths of 200 MHz and 300 MHz.
• Observed center resonant frequencies at 1.5 GHz and 4 GHz.
• Attained gains of 3.52 dBi (81% efficiency) and 5.72 dBi (87% efficiency) for the lower and upper bands, respectively.

Conclusions:

• The proposed antenna exhibits dual-band characteristics suitable for GPS and C-band frequencies.
• The compact size and good performance metrics make it a viable candidate for modern wireless systems.
• The agreement between simulated and measured results validates the design approach.