HIGH-RESOLUTION MICROWAVE PHASE-SHIFTING UNIT

FIELD: electronic equipment.SUBSTANCE: invention relates to electronic engineering, specifically to microwave phase-shifting unit on semiconductor devices. Phase-shifting unit are widely used in communication equipment, radar and measurement equipment. Main signal is selected substantially larger (approximately by 10-12 dB) of the auxiliary signal. Auxiliary signal, passing through the digital attenuator, is summed with the main signal on the adder. As a result of vector addition of signals at the output of the adder, a signal is obtained, which is phase-shifted relative to the main signal by a value depending on the level of the auxiliary signal. By controlling the digital attenuator, the required small shifts can be obtained. By selecting digit capacity of digital attenuator and pitch of change of attenuation, it is possible to select required range and minimum discretion of phase change. According to another version of disclosed invention, disclosed in the proposed phase-shifting unit are two multi-bit phase-shifting units, wherein the second phase-shifting unit is connected in series with the first phase shifter. First phase-shifting unit provides phase control in range of 180 to 5.625 degrees with discreteness of 5.625 degrees, and second, providing installation of required phase with discrepancies in tenths of degrees, and to ensure monotony of phase adjustment into phase-shifting unit digital driver is introduced, which provides conversion of required phase setting into cascade control signals based on phase errors of discrepancies. Input signal supplied to the two-channel divider is divided into 2 streams: the main signal and the auxiliary one with phase shift between them of 90 degrees, which enables to realize minimum discrepancies in phase shifts of less than 5.625 to 0.088 degrees (2.812, 1.406; 0.703; 0.352; 0.176, and 0.088).EFFECT: facilitating implementation of minimum discrepancies of phase shifts.2 cl, 10 dwg Изобретение относится к электронной технике, а именно к фазовращателям СВЧ на полупроводниковых приборах. Фазовращатели (ФВ) широко используются в аппаратуре связи, радиолокации и измерительной технике. При этом основной сигнал выбирается существенно больше (примерно на 10-12 дБ) сигнала вспомогательного. Вспомогательный сигнал, проходя через цифровой аттенюатор, суммируется с основным сигналом на сумматоре. В результате векторного сложения сигналов на выходе сумматора получается сигнал, сдвинутый по фазе относительно основного сигна