A variable resonator arrangement, comprising: a dielectric substrate and, formed on the dielectric substrate, an input/output line and a variable resonator, the variable resonator comprising - a ground conductor; - a ring-shaped conductor line having a connecting portion at which it is connected to the input/output line, and having a circumferential length of n·λ, where λ is the wavelength at the resonance frequency of the resonator and n is an integer equal or greater than 1; and - at least two shunt means each having one end connected to the ring-shaped conductor line and the other end connected to the ground conductor, for shunting the ring-shaped conductor line; wherein each of said at least two shunt means comprises a first circuit switch and the ring-shaped conductor line comprises for each first circuit switch a respective switch node portion (X, Y) with one end of each of said first circuit switches being electrically connected to said ring-shaped conductor line at the respective switch node portion (X, Y), and the other end being electrically connected to the ground conductor, said first circuit switches being adapted to switch electrical connection/disconnection between said ground conductor and said ring-shaped conductor line; characterized in that said first circuit switches are configured such that only one of said first circuit switches shunts the respective switch node portion (X,Y) of the ring-shaped conductor line at a time, and at least a first one and a second one of the switch node portions (X, Y) are positioned such that the shortest distance along the ring-shaped conductor line circumference between said connecting portion and said first switch node portion differs from the shortest distance along the ring-shaped conductor line circumference between said connecting portion and said second switch node portion. a dielectric substrate and, formed on the dielectric substrate, an input/output line and a variable resonator, the variable resonator comprising - a ground conductor; - a ring-shaped conductor line having a connecting portion at which it is connected to the input/output line, and having a circumferential length of n·λ, where λ is the wavelength at the resonance frequency of the resonator and n is an integer equal or greater than 1; and - at least two shunt means each having one end connected to the ring-shaped conductor line and the other end connected to the ground conductor, for shunting the ring-shaped conductor line; - a ground conductor; - a ring-shaped conductor line having a connecting portion at which it is connected to the input/output line, and having a circumferential length of n·λ, where λ is the wavelength at the resonance frequency of the resonator and n is an integer equal or greater than 1; and - at least two shunt means each having one end connected to the ring-shaped conductor line and the other end connected to the ground conductor, for shunting the ring-shaped conductor line; wherein each of said at least two shunt means comprises a first circuit switch and the ring-shaped conductor line comprises for each first circuit switch a respective switch node portion (X, Y) with one end of each of said first circuit switches being electrically connected to said ring-shaped conductor line at the respective switch node portion (X, Y), and the other end being electrically connected to the ground conductor, said first circuit switches being adapted to switch electrical connection/disconnection between said ground conductor and said ring-shaped conductor line; characterized in that said first circuit switches are configured such that only one of said first circuit switches shunts the respective switch node portion (X,Y) of the ring-shaped conductor line at a time, and at least a first one and a second one of the switch node portions (X, Y) are positioned such that the shortest distance along the ring-shaped conductor line circumference between said connecting portion and said first switch node portion differs from the shortest distance along the ring-shaped conductor line circumference between said connecting portion and said second switch node portion.