DEVICE FOR INTRODUCTION AND MATCHING OF CORRECTED AND CORRECTING SIGNALS AT INPUTS OF MODULATOR-CORRECTORS

摘要

FIELD: electricity.;SUBSTANCE: device for introduction and matching of corrected and correcting signals at the inputs of modulator-correctors relates to radio engineering, to the field of linear amplification of amplitude modulated signals and may be used in systems of linearisation of power amplifier characteristics. The device comprises a modulator-corrector (2) and serially connected components: a memory device (MD) (4), a digital to analog converter (DAC) (5), a noise filter (6), the output of which is connected to a modulation input of the modulator-corrector (2), and also a digital detector (DD) (3) of the correcting signal envelope, the input of which is connected to the signal input of the device, and inputs of sync pulses of DD (3) and MD (4) data processing and transfer are connected with the input of sync parcels from the external device. The device differs by the fact that the signal input of the modular-corrector (2) is connected to the signal input of the device, and also a link of sync pulses delay (7) is introduced with a controlled external signal of time delay and a data-hold device (8), connected along the data bus between the DD (3) and the address input of the MD (4), at the same time the input of the data-hold device (8) sync pulses is connected to the input of the device sync messages directly, and the input of sync pulses to the input of data into the DAC (5) is connected to the input of the sync messages via the link of the sync pulses delay (7) with the controlled external signal of the time delay.;EFFECT: invention provides for matching of correcting and corrected signals that is controlled in the wide range of time intervals at the inputs of the modulator correctors by methods of digital technologies without application of analog delay lines.;4 dwg