| 摘要 |
A variable reactance, the value of which is controllable, is produced between a pair of terminals of a variable reactance circuit comprising a pair of current steering circuits. First and second reactive components are coupled respectively between the pair of terminals and the first and second current steering circuits to produce first and second antiphase reactive currents'. The first reactive current is split by the first current steering circuit into first and second antiphased proportional currents. Likewise, the second reactive current is split by the second current steering circuit into third and fourth antiphased proportional currents with said first and third currents being antiphased with respect to each other. The first reactive current is summed at a first one of the pair of terminals with said first and third currents while the second reactive current is summed at the second one of the pair of terminals with said second and fourth currents to produce the variable reactance across the terminals. |
