Combination antenna receiving high frequency terrestrial digital video broadcasting in two frequency bands, has planar antenna surrounded by conductor and traps of second antenna

摘要

Combination includes antennas for both VHF and UHF. One antenna (6) comprise conductors (61-64) joined by traps (65-67). Each trap forms an electrical and high-frequency connection having frequency-dependent properties. The other antenna (3) is an electrically-conductive layer on a flat substrate (2). One antenna (6) completely surrounds the first (3). Its (6) conductors are wires, or are formed as electrically-conductive layers on the substrate. The trap components operating with frequency dependence, are discrete and/or are constructed as electrically-conductive regions on the substrate. The components form traps, which are frequency-dependent blocking circuits. Each comprises a capacitance and inductance in parallel. The inductance is a meandering conductive layer and the capacitance is formed by two parallel conductive tracks on the substrate. Components are connected to form series-parallel circuits.