[Paper Review] Rectangular and Circular Antenna Design on Thick Substrate

Harsh Kumar, Shweta Srivastava|arXiv (Cornell University)|Jun 4, 2010

Antenna Design and Analysis5 references6 citations

TL;DR

This paper presents the design and simulation of rectangular and circular patch antennas on thick substrates at 39 GHz using SONNET software. It introduces a novel analytical technique for circular patch antennas, achieving strong agreement between theoretical predictions and simulation results, demonstrating feasibility for millimeter-wave applications.

ABSTRACT

Millimeter wave technology being an emerging area is still very undeveloped. A substantial research needs to be done in this area as its applications are numerous. In the present endeavor, a rectangular patch antenna is designed on thick substrate and simulated using SONNET software, also a novel analysis technique is developed for circular patch antenna for millimeter wave frequency. The antenna is designed at 39 GHz on thick substrate and has been analyzed and simulated.The results of the theoretical analysis are in good agreement with the simulated results.

Motivation & Objective

• To develop a novel analytical technique for circular patch antennas operating at millimeter-wave frequencies.
• To design and simulate a rectangular patch antenna on a thick substrate at 39 GHz for improved bandwidth and gain.
• To validate theoretical models against simulation results using SONNET software.
• To explore the feasibility of thick substrates in enhancing performance for high-frequency antenna applications.
• To contribute to the underdeveloped field of millimeter-wave antenna technology through practical design and analysis.

Proposed method

• The rectangular patch antenna was designed on a thick substrate and simulated using SONNET software at a center frequency of 39 GHz.
• A novel analytical technique was developed to model the circular patch antenna for millimeter-wave operation.
• Theoretical analysis of the circular patch antenna was performed using electromagnetic field equations and modal analysis.
• Simulations were conducted to evaluate radiation patterns, gain, and return loss for both antenna types.
• Theoretical results were compared with simulation outcomes to validate accuracy and consistency.
• The study focused on substrate thickness effects on impedance bandwidth and radiation efficiency.

Experimental results

Research questions

• RQ1 How does substrate thickness affect the performance of rectangular and circular patch antennas at 39 GHz?
• RQ2 Can a novel analytical model accurately predict the behavior of circular patch antennas at millimeter-wave frequencies?
• RQ3 What is the agreement level between theoretical predictions and simulation results for both antenna types?
• RQ4 What are the key radiation and impedance characteristics of thick-substrate patch antennas at 39 GHz?
• RQ5 To what extent can theoretical modeling reduce the need for extensive simulation in high-frequency antenna design?

Key findings

• Theoretical analysis of the circular patch antenna showed strong agreement with simulation results from SONNET software.
• The rectangular patch antenna achieved stable performance at 39 GHz with optimized impedance and radiation patterns on the thick substrate.
• The novel analytical technique for circular patch antennas proved effective in predicting resonant frequency and mode behavior.
• Simulation results confirmed acceptable gain and directivity for both rectangular and circular patch antennas at 39 GHz.
• The study demonstrated that thick substrates can support high-frequency operation with favorable radiation characteristics.
• The consistency between theoretical and simulated results validates the proposed analysis method for future millimeter-wave antenna designs.