SU1290434A1 - Multichannel rotary connection - Google Patents

Abstract

This invention relates to high frequency radio engineering and provides an increase in the uniformity of the coefficients. transmissions throughout the operating frequency band. The multichannel rotating connection (BC) consists of single-channel aircraft 1, mounted coaxially one above the other and separated by screens 2. Each aircraft 1 contains two circular, / 11 5 h LLH (L CO o Jlilk with 4i

Description

microstrip lines 3, mounted coaxially one above the other with the possibility of rotation relative to each other. Between their conductors 4 and between their grounded plates 5 and shields 2, contact springs 6 are installed. Between the conductors 4 and the taps, for connecting the supply lines 8 are connected concentrically to the conductors 4, segments of connected microband lines are shorter than

one

The invention relates to high frequency radio engineering and can be used to transmit a radio signal between radio path elements having the possibility of reciprocal rotation.

The aim of the invention is to increase the uniformity of the transmission coefficient in the entire frequency band.

Figure 1 shows the device, a longitudinal section; Fig. 2 shows a section A-A in Fig. 1 (on the annular microstrip line above); in fig. 3 - section BB in Fig. 1 (on the ring microstrip line below).

A multichannel rotating connection consists of single-channel rotating connections 1, which are installed coaxially one above the other and separated from one another by screens 2. Each of the single-channel rotating connections 1 contains two annular microstrip lines 3, which are installed coaxially one above the other with the possibility of rotation of one of them relative to other. Between the conductors 4 of the annular microstrip lines 3, as well as between their grounded plates 5 and shields 2, contact springs 6 are installed. Between the conductors 4 of the annular microstrip lines 3 and taps 7 to connect the supply lines 8, segments 9 of connected microstrip lines less than a quarter of the minimum length are included the wavelengths in them, one ends of which are short-circuited among themselves, and two segments of 10 proTI / 4 segments connected to the other ends, one ends of which are zakoroA1 n N

The two ends of the conductor are located one above the other on different sides of the substrate 11 concentric with the conductors 4. The equivalent circuit of each single-channel aircraft is 1 m, b. represented by a T-shaped low-pass filter of type t, which reduces the non-uniformity of the transmission coefficient, 3 or about

water, located one below the other on different sides of the substrate 11 and having a length less than a quarter of the wavelength in the line formed by these segments 10 of the conductor. The segments 9 of the associated microstrip lines and the segments of the conductor 10 are concentric with the conductors of 4 annular microstrip lines 3 "

The device works as follows,

From supply line 8, the signal goes to tap 7, a. from it to the annular microstrip line 3. In the cross section of the connection of the outlet 7 to the annular microstrip line 3, there are connected in parallel a segment 9 of connected microstrip lines and a segment 10 of a conductor. Since the lengths of segments 9 and 10 are less than a quarter of the minimum wavelength in them, segment 9 has an inductive input resistance, and segment 10 has a capacitive, and their parallel connection is equivalent to a parallel circuit. The same circuit also takes place in the other ring microstrip line 3. The conductors 4 of the annular microstrip lines 3 contact each other by means of the contact springs 6. The contact place has a capacitive character due to the distributed capacity of the conductors 4 of the annular microstrip lines 3 and the contact springs 7

on the back of the pins 5.

Thus, the equivalent circuit of each single-channel rotating joint 1 can be represented

31

A T-shaped low-pass filter of type t reduces the unevenness of the transfer coefficient in which the branch is parallel - this is the distributed capacitance of conductors A to the grounded plates 5, and the series branch is the specified parallel circuit.

Claims (1)

Invention Formula A multichannel rotating connection containing single-channel rotating connections, installed coaxially one above the other and separated from one another by screens, each single-channel rotating connection consisting of two annular microstrip lines that are installed coaxially one above the other with the possibility of rotation of one of them relative to the other, and between the conductors of the ring microstrip lines, as well as between their grounded plates and shields to 90D344 contact springs are installed, and the conductors of the annular microstrip lines are equipped with taps for connection - supply lines, characterized in that, in order to increase the uniformity of the transmission coefficient in the entire operating frequency band, a segment of connected microstrip lines is connected between the conductor of each annular microstrip line and the corresponding branch less than a quarter of the minimum length of the WAVE in it, one ends of which are shorted to each other, and two segments of the conductor connected to the other ends, is located s one below the other on the opposite side of the substrate and having a length less than a quarter wavelength in the minimum line ob20 razovannoy these conductor segments, the segment associated microstrip lines, and the conductor segments are arranged concentrically with the annular microstrip conductors  lines. 15 A- A AT 5 Editor T. Parfenova Compiled by E. Krutov Tehred A. Kravchuk Proofreader M. Demchik Order 7912/53 Circulation 647 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