MOBILE TERMINAL WITH A TUNABLE MULTI-RESONACE MONOPOLE ANTENNA

• Main Authors: Jagielski, Ole, Svendsen, Simon
• Format: Patent
• Language: English; French; German
• Published: 11.01.2023
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

For a mobile terminal for at least one of receiving wireless transmissions from a transmitter and transmitting wireless transmissions to a receiver, comprising: a casing with at least one body which has electronic means; an antenna arrangement having at least one antenna element (14) provided on or within said body or on or within at least one of several bodies of said casing in a defined spatial relation to a conducting chassis part (12) of the body or the respective body allowing a high frequency interaction between the antenna arrangement and the conducting chassis part, said antenna arrangement together with associated high frequency circuitry, being adapted to at least one of receiving wireless transmissions and transmitting wireless transmissions in at least one predetermined frequency band, said or each conducting chassis part being limited by a periphery of the conducting chassis part formed by one chassis part edge or several chassis part edges, it is proposed that said antenna element has at least one arm (16a, 16b) which extends outwardly of said periphery along at least one chassis part edge for promoting said high frequency interaction or/and that said antenna arrangement has at least two arms (16a, 16b) of different length which are provided by the same antenna element (14) or at least two different antenna elements and which extend in different or opposed directions along at least one chassis part edge, wherein a shorter arm (16b) of said two arms has an effective electrical length shorter than a quarter wavelength at a resonance frequency within the or a particular predetermined frequency band and a longer arm (16a) of said two arms has an effective electrical length longer than a quarter wavelength at said resonance frequency, so that a high frequency resonance is obtained for at least one of receiving wireless transmissions and transmitting wireless transmissions within a resonance bandwidth associated to the high frequency resonance.