SU718880A1

SU718880A1 - Microwave generator

Info

Publication number: SU718880A1
Application number: SU782590290A
Authority: SU
Inventors: Николай Алексеевич Ханин
Original assignee: Предприятие П/Я Г-4728
Priority date: 1978-03-13
Filing date: 1978-03-13
Publication date: 1980-02-29

Description

1one

Изобретение относитс к радиотехнике и может быть использовано в качестве автогенератора стабилизированных сверхвысокочастотных (СВЧ) колебаний.The invention relates to radio engineering and can be used as an auto-generator of stabilized microwave oscillations.

Известный СВЧ генератор содержит колебательный контур с полупроводниковым генераторным диодом, св занный с высокодобротным стабилизирующим резонатором отрезком пр моугольного волновода и нерезонансным элементом св зи 1.The known microwave generator comprises an oscillating circuit with a semiconductor oscillator diode associated with a high-quality stabilizing resonator by a segment of a rectangular waveguide and a non-resonant coupling element 1.

Однако известный СВЧ генератор не подавл ет паразитных частот генерации и имеет узкий рабочий интервал температур.However, the known microwave generator does not suppress spurious generation frequencies and has a narrow operating temperature range.

Цель изобретени - подавление паразитных частот генерации и расширение рабочего интервала температур.The purpose of the invention is the suppression of spurious generation frequencies and the extension of the working temperature range.

Дл этого в СВЧ генераторе, содержащем колебательный контур с полупроводниковым генераторным диодом, св занным с высокодобротным стабилизирующим резонатором отрезком пр моугольного волновода и нерезонансным элементом св зи, колебательный контур выполнен в виде двух отрезков коаксиальной линии, установленных по одной оси на противоположных широких стенках отрезка пр моугольного волновода и перпендикул рно им, а полупроводниковый генераторный диод расположен в отрезке пр моугольного волновода и включенFor this, in a microwave generator containing an oscillating circuit with a semiconductor oscillator diode associated with a high-quality stabilizing resonator segment of a rectangular waveguide and a nonresonant coupling element, the oscillating circuit is made in the form of two segments of a coaxial line installed along one axis on opposite wide walls of the segment and perpendicular to them, and the semiconductor oscillator diode is located in the segment of the rectangular waveguide and included

между центральными проводниками отрезков коаксиальной линии.between the central conductors of the coaxial line segments.

На фиг. 1 изображена конструктивна схема предложенного генератора; на фиг. 2 - разрез А-А на фиг. 1.FIG. 1 shows a structural diagram of the proposed generator; in fig. 2 shows section A-A in FIG. one.

Предложенный генератор содержит колебательный контур 1, выполненный в виде двух отрезков коаксиальной линии. Диаметры Z) и d соответственно внешнего и внутреннего проводников отрезков коаксиальнойThe proposed generator contains an oscillating circuit 1, made in the form of two segments of a coaxial line. The diameters Z) and d, respectively, of the outer and inner conductors of the coaxial segments

линии выбраны из соотношени - , аthe lines are chosen from the ratio, and

„ i D + d длина средней линии 2 (- j„I D + d length of the middle line 2 (- j

меньшеless

длины волны Я дл обеспечени работы колебательного контура 1 на основном типе колебаний без высших типов волн и обеспечени малой добротности колебательного контура 1.wavelengths I to ensure the operation of the oscillatory circuit 1 on the main type of oscillations without higher types of waves and to ensure low Q of the oscillatory circuit 1.

Claims

The coaxial line segments are embedded in the wide walls of the end of a segment of a rectangular waveguide 2 and are located on both sides of a semiconductor oscillator diode 3, for example, a Gunn diode. The power supply circuit of diode 3 is generated from microwave oscillations by a quarter-wave coaxial cable 4, which directly enters one of the segments of the coaxial line of the oscillating circuit 1. To increase the stability of the generated frequency, the proposed generator has a high-quality stabilizing resonator 5 tuned in frequency by a non-contact piston 6. Resistor coupling 5 with waveguide 2 is performed using a low-Q nonresonant coupling element 7, for example, having a dumbbell shape. To create a traveling wave mode, waveguide 2 is loaded with a nonresonant coupling element 7 having the same characteristic impedance and quality factor as oscillating circuit 1 with diode 3. The generator is connected to the load directly through oscillating circuit 1 and diode 3. The proposed generator works as follows. When a bias voltage is applied to diode 3, oscillations occur, the frequency of which is determined by the parameters of diode 3 and oscillatory circuit 1. Waveguide mode 2 creates a traveling wave and microwave energy propagates towards the low-Q element of communication 7. In the latter, microwave oscillations are excited in turn, a high-quality stabilizing resonator 5 on the YaO1 wave is excited at its own resonant frequency. Due to the high Q-factor of the high-quality stabilizing resonator 5 and the traveling wave mode in the waveguide 2, the frequency of the generated 4 oscillations is oscillated by the oscillatory circuit 1 and oscillatory iodine 3 of the natural frequency of the resonator 5. The generation frequency is tuned by tuning the resonant frequency of the resonator 5 suppress spurious generation frequencies and extend the working temperature range. Claims An ultra-high-frequency oscillator containing an oscillating circuit with a semiconductor oscillator diode associated with a high-quality stabilizing resonator, a segment of a rectangular waveguide and a nonresonant communication element, wherein the oscillating circuit is designed to suppress the parasitic oscillation frequencies and spread the working temperature range a view of two segments of a coaxial line, installed along the same axis on opposite wide walls of a segment of a rectangular waveguide and perpendicular to them, and the semiconductor oscillator diode is located in a segment of a rectangular waveguide and connected between the central conductors of the coaxial line segments. Sources of information taken into account in the examination 1. US patent number 3866144, cl. N OZV 7/14, 1975.

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