| 摘要 |
PCT No. PCT/US94/02279 Sec. 371 Date Aug. 31, 1995 Sec. 102(e) Date Aug. 31, 1995 PCT Filed Mar. 2, 1994 PCT Pub. No. WO94/21036 PCT Pub. Date Sep. 15, 1994A broadband switching amplifier utilizes an output stage capable of variable impedance transformation in addition to conventional controlled pulsewidth coupling to accurately produce outpout power without regard for normal power supply or load impedance constraints. In a preferred embodiment, the present invention charges and discharges a reactance (406) with gated switches (404, 405, 407, 408) in accordance with pulsewidth-modulated signals representative of an input signal. For voltage amplification the reactance is inductive, whereas for current amplification, the reactance is capacitive.
|
