A design of self noise matching circuit for compact MIMO system

摘要

The impedance matching problem in the presence of signal and noise coupling in compact MIMO arrays is addressed. For maximizing ergodic capacity, the matching network is employed for matching between arbitrary impedance and desired impedance. Since optimal matching circuit has a problem to realize in practice, this paper presents that self matching method with minimization determinant of noise figure is derived based on a symmetrical antenna and identical front-end characteristic. Also, realization of various matching circuits is considered and circuit parameter of sub optimal matching is calculated in specific example.