SU1241066A1 - Detector section - Google Patents

Abstract

This invention relates to a microwave technique. Provides constant const. conversion in frequency and temperature range. The device consists of a segment of a coaxial line with internal and external conductors (P) 1.2, resistors () 3.7, microwave capacitor (MSC), made in the form of a dielectric ,. washers 4 with outer and inner plates 5,6 and a through axial bore; UHF cover 6 is connected to P 2 and separated from the end of P 1 at a distance of an order of magnitude less than the wavelength; semiconductor microwave diode 8, located on the outer side of the outer lining of 5 microwave frequencies. P 3.7 are located in parallel to P 1 and are connected by their own conclusions with. the end face is L t, others. the output of P 7 is connected to the lining of the MSC, and R 3 is located coaxially with the MSC, while the other of the output of P 7 is connected to the output of the 8 C) diode of the side of the lining 5 of the MSC, to which the 2nd output of the diode 8 is connected The power of the microwave signal propagating in the section of the coaxial line is absorbed into P 7. The voltage across P 7 propagating across P 7 goes to diode 8 and is detected. The high-frequency component of the detected signal is clamped to the P 2 segment of the coaxial line through the MSC. 1 il. S X. i (L IS9

Description

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The invention relates to the technique

Microwave and can be used to monitor the parameters of the microwave signal such as power or the envelope of radio pulses.

The aim of the invention is to provide a constant conversion coefficient in the range of frequencies and temperatures.

The drawing shows the construction of the detector section.

The detector section consists of a segment of a coaxial line with internal and external conductors 1 and 2, a first resistor 3, a microwave capacitor made in the form of a dielectric washer 4 with an external and internal cavity block 5 and 6 and a through axial bore. The internal plate 6 of the microwave capacitor is connected to the external conductor 2 and is located at a distance of at least an order of magnitude less than the wavelength from the end of the internal conductor 1. The detector section: also contains a second, -resistor 7,. semiconductor microwave diode 8. located on the outer side of the outer cover 5 of the microwave capacitor. The first and second resistors 3 and 7 are parallel to the inner conductor 1 of the coaxial line segment and are connected by one end to the end of the inner conductor 1, the other end of the second resistor 7 is connected to the inner lining 6 of the microwave capacitor, and the first resistor 3 is located coaxially with the microwave condenser a second, the output of the first resistor 7 is connected to the first output of the semiconductor microwave diode 8 from the outer shell 5 of the microwave condensate, to which the second output of the semiconductor microwave diode 8 is connected.

The detector section operates as follows.

The power of the microwave signal propagating in the section of the coaxial line is absorbed in the second resistor 7. The microwave voltage released at the second resistor 7 through the first resistor 3 passing through the axial orifice of the microwave capacitor is supplied to the semiconductor microwave diode 8, located on the outside of the outer cover 5 of the microwave capacitor, and detected. The high-frequency component of the detected signal is closed to the external conductor 2

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cut the coaxial line through the microwave capacitor-.

The conversion factor of the detector section is expressed by the ratio of the output signal detected by the semiconductor microwave diode 8 signal and the input microwave power. The magnitude of the conversion coefficient of the detector section C with the second resistor 7 is determined by matching the characteristic impedance of the coaxial line segment with the parallel-connected resistance of the second resistor 7 and the input resistance of the segment

transmission lines, where the semiconductor microwave diode 8 is located (this determines the constant of the magnitude of conversion of the input microwave power to the voltage. The microwave at the second resistor 7); the constant of the microwave voltage transfer ratio from the matched second resistor 7 to the detecting junction of the semiconductor microwave diode 8 (the constant of this coefficient is determined by the reactive ports of the semiconductor microwave diode 8, its capacitance, electrical length. up to the detecting transition of the semiconductors of the microwave diode 8) and the magnitude of the voltage induced by the field of the coaxial line segment on the semiconductor microwave diode 8,

A change in the capacitance of a semiconductor microwave diode 8 in the temperature range and a change in the frequency of the input signal affects each of these: factors.

The invention provides an increase in the constancy of the conversion coefficient in the frequency and temperature range. Removing the microwave semiconductor diode 8 from the coaxial line segment and connecting it to the second resistor 7 through the first resistor 3 at a small electrical length eliminates the field pointing the coaxial line to the wiring on the semiconductor microwave diode 8, reduces the reactive component of the input resistance semiconductor circuit

The microwave diode 8 increases the constancy of the transmission coefficient of the microwave voltage from the matched second resistor. 7 before the detecting junction of the semiconductor microwave diode 8. Connected to the end of the inner conductor 1 of the coaxial line of the second and nejpBoro resistors 7 and 3, are parallel to each other in the

not limited by the perimeter of the specified end and at the shortest compared to the wavelength distance (at a small electrical length), respectively, the first from the inner capacitor plate, and the second from the remote microwave semiconductor.8, improves the matching of the wave resistance coaxial line with parallel-connected resistance of the second resistor | a 7 and the input resistance of the semiconductor microwave diode 8.

These results are provided in the frequency range of the input signal and when the capacitance of the semiconductor microwave diode 8 changes in a wide temperature range.

Claims (1)

Invention Formula A detector section containing a segment of a coaxial line, the end of the inner conductor of which is connected to the first terminal of the first resistor, the microwave condenser, in which the inner lining is made Compiled by E. Adamova Editor A. Lezhnin Tehred L. Oleinik Proofreader A. Zimokosov Order 3478/35 Circulation. 728 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 “Production and printing company, Uzhgorod, Projecto st., 4 a through axial hole, a semiconductor microwave diode, with one output of a semiconductor microwave diode connected to the outer lining of the microwave capacitor, and the other to the second output of the first resistor, the first resistor being parallel to the inner conductor, and the inner lining of the microwave capacitor connect 0 is not with an outer conductor, the distance between the end of the inner conductor and the inner lining of the microwave capacitor is at least a dock shorter than the wavelength, about 5 and 5 so that, in order to ensure a constant conversion coefficient in the frequency and temperature ranges , a through-axis axial hole is made in the outer lining of the microwave capacitor, a semiconductor microwave diode is located on the outer side of the outer lining of the microwave condenser, and the first p | eistor is located coaxially with the microwave capacitor Located between the end of the inner conductor and the inner plate of a microwave capacitor.