The correct application of total active reflection coefficient to evaluate MIMO antenna systems and its generalization to N ports

Several papers published by prestigious Journals on Antennas and Microwave Techniques have disseminated misconceptions about total active reflection coefficient (TARC), a meaningful metric to characterize multiple‐input multiple‐output antenna arrays, and the misapprehension has been spread over the...

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Published inInternational journal of RF and microwave computer-aided engineering Vol. 30; no. 4
Main Authors Fritz‐Andrade, Erik, Jardon‐Aguilar, Hildeberto, Tirado‐Mendez, Jose A.
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 01.04.2020
Subjects
Antenna arrays
Antennas
electromagnetic measurements
microwave circuits
millimeter‐wave circuits
MIMO (control systems)
MIMO antennas
mutual coupling
Reflectance
Reflection
Systems analysis
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Abstract Several papers published by prestigious Journals on Antennas and Microwave Techniques have disseminated misconceptions about total active reflection coefficient (TARC), a meaningful metric to characterize multiple‐input multiple‐output antenna arrays, and the misapprehension has been spread over the years. In this article, an extrapolation to calculate TARC for N‐antennas systems is derived and applied to published results for illustration purposes. Moreover, the inaccurate and correct TARC equations are put in context by means of its physic and mathematical insight, demonstrating the divergence of results when the interport RF isolation is comparable or higher than the port matching. The importance of assessing multiantenna systems using TARC is explained.
AbstractList Several papers published by prestigious Journals on Antennas and Microwave Techniques have disseminated misconceptions about total active reflection coefficient (TARC), a meaningful metric to characterize multiple‐input multiple‐output antenna arrays, and the misapprehension has been spread over the years. In this article, an extrapolation to calculate TARC for N‐antennas systems is derived and applied to published results for illustration purposes. Moreover, the inaccurate and correct TARC equations are put in context by means of its physic and mathematical insight, demonstrating the divergence of results when the interport RF isolation is comparable or higher than the port matching. The importance of assessing multiantenna systems using TARC is explained.
Author Fritz‐Andrade, Erik
Tirado‐Mendez, Jose A.
Jardon‐Aguilar, Hildeberto
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  surname: Tirado‐Mendez
  fullname: Tirado‐Mendez, Jose A.
  email: jtiradom@ipn.mx
  organization: Instituto Politécnico Nacional, SEPI‐Electrical Engineering, ESIME‐Zacatenco
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Snippet Several papers published by prestigious Journals on Antennas and Microwave Techniques have disseminated misconceptions about total active reflection...
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SubjectTerms Antenna arrays
Antennas
electromagnetic measurements
microwave circuits
millimeter‐wave circuits
MIMO (control systems)
MIMO antennas
mutual coupling
Reflectance
Reflection
Systems analysis
Title The correct application of total active reflection coefficient to evaluate MIMO antenna systems and its generalization to N ports
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