Finding Optimal Total Active Reflection Coefficient and Realized Gain for Multi-port Lossy Antennas

Abstract

A numerically effective description of the total active reflection coefficient and realized gain are studied for multi-port antennas. Material losses are fully considered. The description is based on operators represented in an entire-domain port-mode basis, i.e., on matrices with favorably small dimensions. Optimal performance is investigated and conditions on optimal excitation and matching are derived. The solution to the combinatorial problem of optimal ports' placement and optimal feeding synthesis is also accomplished. Four examples of various complexity are numerically studied, demonstrating the advantages of the proposed method. The final formulas can easily be implemented in existing electromagnetic simulators using integral equation solver.

arXiv comment13 pages, 23 figures

References in corpus (6)

• Experiments with Compact Antenna Arrays for MIMO Radio Communications
• Optimal Currents on Arbitrarily Shaped Surfaces
• Minimization of Antenna Quality Factor
• Trade-off Between Antenna Efficiency and Q-Factor
• Shape Synthesis Based on Topology Sensitivity
• Modal Tracking Based on Group Theory

Cited by in corpus (6)

• Unified Theory of Characteristic Modes: Part I -- Fundamentals
• Excitation of Orthogonal Radiation States
• The Upper Bound on Antenna Gain and Its Feasibility as a Sum of Characteristic Gains
• Trade-off Between Optimal Efficiency and Envelope Correlation Coefficient for Antenna Clusters
• A Role of Symmetries in Evaluation of Fundamental Bounds
• Array Synthesis in Terms of Characteristic Modes and Generalized Scattering Matrices