RADIO ELECTRON UNIT Russian patent published in 2001 - IPC

FIELD: radio electronics. SUBSTANCE: radio electron unit has supporting member coming in the form of bearing printed circuit board-flat monolithic multilayer printed circuit board with N ≥ 5 conducting layers. Printed conductors, lands, electric and radio elements and connectors for external connection are located in its outer conducting layers. Its inner conducting layers house the rest of printed conductors of electric circuit intended for reception, frequency conversion and digital processing of input SHF signals. Electric and radio elements arranged on bearing printed circuit board are grouped according to functional zones: one zone incorporates analog electric and radio elements and the other zones includes digital electric and radio elements. At least one screening grounding plane made in one of inner conducting layers of bearing printed circuit board corresponds to each functional zone. Strip lines of SHF units of first functional zone are placed directly on bearing printed circuit board with the use of printed conductors located in its conducting layers. In case of presence of asymmetrical strip line signal conductor of strip line is positioned in outer conducting layer of bearing printed circuit board. Grounding plane of first functional zone located in adjacent inner conducting layer is employed as screen. EFFECT: improved operational reliability of radio electron unit. 4 cl, 9 dwg