Unifying the Theory of Mutual Coupling Compensation in Antenna Arrays

Abstract

The limitations of current mutual coupling compensation methods in antenna arrays are thoroughly reviewed. The theory of mutual coupling compensation is unified in such a way that efficient methods can be employed for calibrating both transmit and receive systems having arbitrary geometries. The theory leads to methods that can evaluate mutual coupling using either theoretical or experimental means. Reciprocity is studied through the careful comparison of receive and transmit analytical formulations. Examples involving various applications are presented for the validation of the theory. This theory has numerous applications and contributes to the areas of antenna theory, mutual coupling analysis, complex structure modeling, and antenna measurements.

Investigation of a 256‐Monopole Transmit Antenna Array for Over‐the‐Horizon Radar in Canada

“…The impedance matrix model can work in special cases but is generally incorrect (Henault & Antar, ), since this analysis is limited to the circuit level. Full radiation pattern measurements or calculations are required in general.…”

An Array Switching Strategy for Direction of Arrival Estimation with Coprime Linear Array in the Presence of Mutual Coupling

“…To explain it more intuitively and provide a reliable foundation for the proposed scheme, we provide the S-parameter characteristics of two kinds of arrays below as an example. In practical applications, S-parameters are typically used to characterize the mutual coupling and , p q S captures the coupling degree between the p-th element and the q-th element [42]. Figure 2 exhibits the S-parameter characteristics from an electromagnetic simulation software, i.e., HFSS, where two ten-element ULAs composed of microstrip antennas and dipole antennas are studied.…”

Orthonormal method for compact Global Navigation Satellite Systems antenna array designs

“…Many compensation methods have been proposed to reduce differences on the in situ RPs . However, they do not account for the effects of antenna thermal noise.…”

“…Many compensation methods have been proposed to reduce differences on the in situ RPs. [11][12][13][14] However, they do not account for the effects of antenna thermal noise. For a multiantenna GNSS receiver, each channel/antenna signal is essentially immersed into thermal noise that typically can be considered independent and identically distributed (i.i.d.)…”