| 摘要 |
<p>A circuit board construction 15 comprises a first inductor 13 electrically connected to a second inductor 14, where the first inductor is located on a first surface of the circuit board and the second inductor is located on the other surface of the circuit board. When each inductor has the same inductance, this construction allows the total inductance of the two inductors to remain constant during any deformation of the circuit board as the increase in inductance of one of the inductors as it contracts 19, cancels out the decrease in the inductance of the other, as it expands 17. The circuit board may be used in a voltage controlled oscillator (VCO) circuit in, for example, a mobile telephone. The inductors may be air core coiled inductors and the axes of the coils of the first and second inductors may be parallel to each other.</p> |
