Lk Products Oy

Kai Vuokko

Petteri Annamaa

Seppo Raatikainen

Tero Kuittinen

Seppo Ojantakanen

Pekka Kinnunen

Tero Haapamaki

The antenna (D) of a radio telephone radiates electromagnetic RF radiation which is directed to a dielectric body block (10) according to the invention. By means of an inner and an outer conductor (1, 2) formed on the surface of the block a signal carried by the electromagnetic radiation is coupled to a coaxial cable (12) which takes it to an external antenna.

Coupling element for realizing electromagnetic coupling and apparatus

The invention relates to a particular structure of high-frequency antenna, which comprises a support element (1) provided with a cylindrical coil conductor which forms a helix (2). On the support element (1) there is formed, for example by means of a conductive coating, the electrical parts of the antenna, such as the attachment points (3b) for the helix and for other parts, such as feeder lines (4), radiators (5) or impedance matching devices. By varying the number and size of the helices (2), the number and form of the feeder lines (4) and radiators (5) and the quality of any impedance matching devices, it is possible without difficulty to obtain a very wide choice of different antenna structures. The feeder lines and radiators extend, at least in part, within the helix.

Combined structure of a helical antenna and a dielectric plate

Growing community of inventors

Tampere, Finland

Kai Vuokko