| 摘要 |
FIELD: antennas and coils for feeding multiband antennas. SUBSTANCE: several spiral coils 110, 120, 130 are placed nearby and coupled with straight conducting section 140 of antenna to constitute multiband antenna. Spiral coils 110, 120, 130 are spaced apart through sufficient distance to exclude noise that may occur in their interaction. Proposed design makes it possible to develop radio communication device with multiple resonance provision capable of operation in different frequency bands using single compact antenna. EFFECT: enlarged functional capabilities of antenna. 10 cl, 5 dwg |
