SU672680A1 - Device for adding signals of different frequencies - Google Patents

Description

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The invention relates to radio engineering, which is widely used for adding signals of different frequency transmitters over a high frequency range.

A device for adding signals of different frequencies is known, containing two cascade-connected slot bridges, in one of the connecting lines between which a third slot bridge with short-circuit transmission lines 1 connected to its outputs is connected.

However, this device has a large size and does not provide an operative layer of signals with varying frequency spacing.

The aim of the invention is to reduce the size and sum of the signals with varying frequency separation.

To do this, in the device of the addition of signals of different frequencies, containing two cascade-switched split bridges, one of the connecting lines between which includes a third slot bridge connected to its outputs short-circuited transmission lines, each of the short-circuited transmission lines is connected the house is shorted

at the ends of parallel sections of the waveguide, in the common walls of which in a shahmatny order there are communication holes, with short-circuit transmission lines and adjacent parallel sections of the waveguide equipped with moving short-circuits connected respectively in pairs with gyum drives.

The drawing shows a circuit diagram of the proposed device.

A device for adding signals of different frequencies contains two cascaded slit axles 1.2, a third slit bridge 3, short-circuited transmission lines 4.5, a series of shorted ones. At the ends of the parallel lengths of waveguide 6c, there are communication holes 7 in the common walls of the waveguides,

5 mobile shorting 8, 9 and two drive 10, P.

The device works as follows.

Claims (2)

Signals of folding frequencies fiH fj enter the input arms of slot-hole bridge 1, and the power of each of these signals is divided by slot-hole bridge 1 into two equal parts with a phase shift of 7G / 2. Then they spread to slot bridge 2 along two connecting lines, of which the third slot bridge 3 is longer, loaded with two identical short-circuited gear 4 and 5. In each short-circuited line there are 4.5 signals coming from the third slot slot. bridge 3, is divided into two portions with a y / 2 shift, the first additional slot bridges formed by the first parallel segments of waveguide 6 shorted at the ends. Then these signals are reflected from moving, shorting connectors 8, 9. If The moving shorting switches 8, 9 are installed in the same plane, then the reflected waves are added up and pass further through the communication holes 7 into the next parallel sections of the waveguide 6 shorted at the ends. After dividing into them and reflecting from the upper shortly curved Kosho signals, the third shorted at the ends there are parallel segments of the waveguide 6, and so on. Reflected from the last short-circuited end, signals similarly return to the third slit bridge 3, where, having formed, they go to slit bridge 2. Almost all parallel-shorted ends, waveguide 6 and short-circuited transmission lines 4, 5 are transmitted four times in a wave. The length of them, taking into account the fourfold passage of the will, is chosen in such a way that, with the minimum specified frequency separation of the input signals, the difference in the lengths of the connecting lines of the device was odd and equal to four half-waves for each of the frequencies, respectively. It is necessary to equip the signals in the input arms of the slot-hole bridge 2 of the bridge: the same way that you move short short circuit breakers 8j 9 with POMOI11.You pry, 6c 10, I. By adjusting the subdirector short, 8, 9 within Small limits. (about half the wavelength), the operational change of the electrical length of the short-circuited transmission lines 4, 5 is carried out within more limits (of the order of hundreds of half-waves), and, therefore, the operative summation of signals with varying frequency spacing. The proposed device, with its small dimensions, allows operative summation of signals with varying frequency spacing. Claim 1. A device for adding signals of different frequencies, containing two cascaded slotted bridges, in one of the connecting lines between which a third slot ltr is connected with short-circuited transmission lines connected to its outputs, characterized in that with a size reduction circuit, each of Short-emitting transmission lines are connected to a prior-entered a series of waveguide shorted at the ends parallel to the segment, in the common walls of which communication holes are arranged in a checkerboard pattern. 2. A device according to claim 1, characterized in that, in order to add signals with varying frequency spacing, the short-circuited transmission lines and their parallel segments of the waveguide are provided with movable short-circuits connected in pairs with two drives, respectively. Sources of information accepted in the examination of the L L Appl France N 2228307, cl. H 01 R 1/18, 1974 ,. tf jL