Method and arrangement relating to a telecommunication system

A radio communications unit comprising:

• an antenna connected to a signal processing unit;
• at least two electrically conductive objects which stand free from the antenna;
• an impedance unit having a varying impedance level wherein the variation of said impedance level results in a change in the electrodynamic field in the proximity of the antenna;
• and
• a switch means having an activating and a deactivating state, said switch in an activating state connecting the conductive objects with said impedance unit.

A radio communications unit comprising:

• an antenna connected to a signal processing unit;
• an electrically conductive object which stands free from the antenna;
• an impedance unit having a varying impedance level wherein the variation of said impedance level results in a change in the electrodynamic field in the proximity of the antenna, said impedance unit being connected to the conductive object;
• and
• a switch means having an activating and a deactivating state, said switch in an activating state connecting the conductive object with said impedance unit.

A method of radio communication using a radio communications unit that has an antenna connected to a signal processing unit, the method comprising the steps of:

• placing in the radio communications unit an electrically conductive object in a manner such as to stand free from the antenna;
• connecting the electrically conductive object to the signal earth of the signal processing unit via a switch means;
• connecting an impedance unit between the electrically conductive object and the signal earth of the signal processing unit;
• and
• switching the switch means between states in which the signal earth of the signal processing unit is connected and disconnected respectively via the impedance unit, with the intention of influencing the electrodynamics field in the proximity of the antenna.

A method of radio communication between a base station and a mobile station in a mobile radio system, wherein the mobile station includes an antenna connected to a signal processing unit, the method comprising the steps of:

• connecting to the signal processing unit a switch means with which an electrically conductive object that stands freely from the antenna is switched between a signal earth connecting and signal earth disconnecting mode;
• connecting to the signal processing unit a variable impedance unit with which an electrically conductive object is connected to signal earth via the switch means;
• and in that the procedural steps carried out by the signal processing unit comprise:
• measuring the quality of a signal from the base station;
• comparing the measured signal quality with a threshold value;
• switching between respective states in which the electrically conductive object is connected to signal earth and disconnected therefrom in accordance with the comparison, wherein switching between said states is effected in response to a control signal to the switch means;
• and
• setting the impedance in the impedance unit with which the electrically conductive object is connected to signal earth in accordance with said comparison, wherein setting of the impedance is effected in response to a control signal to the impedance unit.

A method of radio communication between a base station and a mobile station in a mobile radio system, wherein the mobile station includes an antenna connected to a signal processing unit, and wherein the base station measures the quality of a signal received from the mobile station, the method comprising the steps of:

• connecting to the signal processing unit a switch means with which an electrically conductive object that stands free from the antenna can be switched between respective states in which the electrically conductive object is connected to and disconnected from the signal earth of the signal processing unit;
• connecting to the signal processing unit a variable impedance unit through which the electrically conductive object is connected to the signal earth of the signal processing unit via the switch means;
• and in that those procedural steps carried out by the base station include
• measuring the quality of a signal from the base station;
• comparing the measured signal quality with a threshold value;
• sending to the mobile station in accordance with the comparison a signal which includes a request asking for the electrically conductive object to he connected to or disconnected from signal and further includes a request asking for the impedance in the impedance unit with which the electrically conductive object is connected to signal earth to be regulated;
• wherewith the procedural steps carried by the mobile station include
• processing the signal from the base station, including signal interpretation, wherein the result of said interpretation determines whether said further steps shall include connection or disconnecting the electrically conductive object to or from signal earth and also regulation of the impedance of the impedance unit with which the electrically conductive object is connected to signal earth;
• switching between respective states in which the electrically conductive object is connected to and disconnected from signal earth, wherein switching between states is carried out in response to a control signal sent to the switch means;
• and
• setting the impedance of the impedance unit with which the electrically conductive object is connected to signal earth, wherein setting of the impedance is effected in response to a control signal to the impedance unit.