Glazing unit with frequency selective coating and method

A glazing unit comprising:

• a glass panel which is low in reflectance for RF radiation;
• a coating system which is high in reflectance for RF radiation disposed on the said glass panel;
• at least one frequencies selective decoated portion of the coating system extending along a plane, P, defined by a longitudinal axis, X, and a vertical axis, Z;
• having a width, OW, measured along the longitudinal axis, X, and a length, DL, measured along the vertical axis, Z, comprising:
• a first decoated element comprising a plurality of unit cells forming a regular grid of n rows by m columns unit cells, Um,n, wherein m and n are positive integers higher than 5 (n>5 and m>5) foiling three zones, zone A from U1,n to Ux,n, zone B from Ux+1,n to Uy,n and zone C from Uy+1,n to Um,n, wherein x and y are positive integers respectively higher than 1 and x (x>1 and y>x);
• and
• a plurality of second decoated elements,
• wherein at least one second decoated element is placed in a unit cell of the first decoated element,
• wherein no second decoated element is in contact with the first decoated element, and
• wherein zone A and zone C each have more second decoated elements than zone B.