Abstract: The method for adjusting a resonance frequency of a ring resonator formed as a strip line ring exactly includes removing successive amounts of conducting material from one or more positions (2,3) on the strip line ring (1) with a laser until the ring resonator has a desired predetermined resonance frequency.

Abstract: A frequency-generator circuit employs the same circuit element (preferably a varactor) to perform the functions of parametric frequency-divider and frequency-adjustment element for an oscillator used to pump the parametric frequency-divider. The varactor preferably has a flat gamma-characteristic (gamma preferably >2) over a required bias-voltage adjustment range corresponding to the required frequency-adjustment range.

Abstract: An adhesive-dispensing method applies a pattern of adhesive onto a circuit-board carrier such that any discontinuities in the pattern, i.e. starting-points, end-points or turning-points, are outside a footprints of a pair of substrates or MMICs intended to be attached, adjacent each other and spaced apart, to the circuit-board, and in particular outside such footprint in the area of transition between one substrate/MMIC and the other. The adhesive is preferably applied in straight lines and in a direction substantially transverse to the direction of transition between the two substrates/MMICs.

Abstract: The method for adjusting a resonance frequency of a ring resonator formed as a strip line ring exactly includes removing successive amounts of conducting material from one or more positions (2,3) on the strip line ring (1) with a laser until the ring resonator has a desired predetermined resonance frequency.

Abstract: The ring resonator of a high Q-factor has a planar conducting ring (1) that is dimensioned in regard to its conductor width (w) and its diameter (d) so that it resonates in an odd harmonic or overtone vibration mode but not in its fundamental mode.