SU985937A1

SU985937A1 - Phase shifter

Info

Publication number: SU985937A1
Application number: SU792842715A
Authority: SU
Inventors: Геннадий Михайлович Выдолоб
Original assignee: Московский институт электронной техники
Priority date: 1979-11-14
Filing date: 1979-11-14
Publication date: 1982-12-30

Description

(54) ФАЗОВРАЩАТЕЛЬ(54) PHASE EXPANDER

Изобретение относитс к фазоизмерительной технике.The invention relates to a phase-measuring technique.

Известен фазовращатель, содержащий фазорасщепитель на 90°, сумматор , к входам которого подключены одними выводами два резистора, а также переменный резистор, включенный между входами сумматора, при этом движок переменного резистора соединен с общей шиной, а вторые выводы резисторов подключены к выходам фазорасщепител на ЭО 1.A phase shifter is known, containing a phase splitter at 90 °, an adder, two resistors are connected to the inputs, and a variable resistor connected between the inputs of the adder, the variable resistor engine is connected to a common bus, and the second resistor terminals are connected to the outputs of the phase splitter on an EO one.

Однако в таком фазовращателе су- : щественно измен етс амплитуда выходного напр жени при регулировании фазы.However, in such a phase shifter, the output voltage amplitude changes significantly during phase control.

Цель изобретени - уменьшение изменени амплитуды выходного напр жени при регулировании фазы.The purpose of the invention is to reduce the change in the amplitude of the output voltage during phase control.

Дл достижени цели в фазовращатель , содержащий фазорасщепитель на 90®, сумматор, к входам которого подключены одними выводами два резистора , а также переменный резистор, включенный между входами сумматора, при этом движок переменного резистора соединен с общей шиной, введены два дополнительных сумматора, первые входы которых подключены к выходам фазорасщепител на 90, вторые входы подключены к выходу первого cyiviMaTopa, а выходы подключены к вторым выводам первого и второго резисторов, причем коэффициенты передачи дополнительных сумматоров по первым входам равны 1,71, а по вторым - 1,09,To achieve the goal, a phase coupler containing a 90® phase splitter, an adder with two resistors connected to the inputs, and a variable resistor connected between the inputs of the adder, the variable resistor slider connected to the common bus, two additional adders were added, the first inputs which are connected to the outputs of the phase splitter by 90, the second inputs are connected to the output of the first cyiviMaTopa, and the outputs are connected to the second terminals of the first and second resistors, with additional transfer coefficients pit on first inputs are 1.71, and in the second - 1.09,

На чертеже изображена структурна электрическа схема предлагае10 мого фазовращател .The drawing shows a structural electrical circuit of the proposed 10 phase shifter.

Фазовращатель содержит фазора щепитель .на 90°1, сумматоры 2-4, резисторы 5 и б, переменный резистор 7.The phase shifter contains a phasor splinter. On 90 ° 1, adders 2-4, resistors 5 and b, variable resistor 7.

Фазовращатель работает следующим Phaser works as follows

ts образом.ts way.

На выходе фазорасщепител на 90° 1 обеспечиваетс получение двух равных по амплитуде напр жений, сдви20 . нутых друг относительно друга на 90 Эти напр жени суммируютс с выход.ным напр жени сумматора 2 сумматорами 3 и.4, и через делители, образуемые соответственно один резист ром 5 и част:ью переменного резис25 тора 7, другой резистором 6 и другой частью переменного резистора 1, поступают на входы сумматора 2, где осуществл етс сложение напр жений. В зависимости от положени движка At the output of the phase splitter at 90 ° 1, two equal amplitudes of stresses, a shift of 20, are obtained. 90 voltages relative to each other. These voltages are summed with the output voltage of the adder 2 by the adders 3 and 4, and through dividers formed by one resistor 5 and a frequency of alternating resistor 7, another by resistor 6 and the other part of alternating voltage, respectively. the resistor 1 is fed to the inputs of the adder 2, where voltage is added. Depending on the position of the engine

Claims

30 of the variable resistor 7, the output of the adder 2 is removed, the voltage shifted from the input to the voltage in the range O - 90, which is described by the expression A (x) tw tt V (x) J, /.| U; R (lx) 2 RTH-X) + R (, / where / (x /: r R -, (lx) RiH-jcHRb is the amplitude of the output voltage of the phase shifter; V (x) s, g s tg. | JA2il44 l-Rb (+ Re (I) x) is the phase of the output voltage of the phase splitter (phase response of the phase shifter); X is the relative movement of the variable resistor (O i X; s 1); resistance of the resistors 5; 6; R-, - resistance of the variable resistor 7; K, K, -j - transfer ratios per pin and the second inputs of summers 3 and 4. The nonlinearity of the phase characteristics of the phase shifter is minimal with a ratio of resistances of resistor 5 and b and variable resistor 7, 8R-. The change in the amplitude of output april is minimal at values of transfer coefficients of adders 3 4 through the first inputs K, 1.71, and about the second (.y 1.09. The change in the amplitude of the output tilt of the phase shifter does not exceed 2% with a nonlinearity of the phase characteristic no more than 2, Invention Phaser, (containing phase splitter 90 °, adder, to the inputs of which are connectedalone. the terminals are two resistors, as well as a variable resistor connected between the inputs of the adder, and the variable resistor engine is connected to a common bus, characterized in that in order to reduce the change in the amplitude of the output voltage during phase control, two additional adders are introduced into it which are connected to the outputs of the phase splitter by 90 °, the second inputs are connected to the output of the first adder, and the outputs are connected to the second terminals of the first and second resistors, and the transfer coefficients are additional sum Hur of first inputs are equal to 1.71, and in the second - 1.09. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 572895, cl. H 03 H 7/20, 1977 (wiped).