SU1434511A1 - Multichannel switch - Google Patents

Abstract

This invention relates to microwave radio and. used in various receiving and transmitting equipment. The purpose of the invention is to improve the matching while simultaneously turning on all or several output channels. The multichannel switch contains input channel 1, output channels 2, 3, 4, 5 and successively branching switching groups (PRPG) whose input arms connect quarter-wave matching transformers 6, Output PRPH shoulders contain 16 lins transmission segments and switching diodes (CD ) 17-22, Kond-ry 23 are used for isolation from the microwave path of the control signal supply circuits. The input channel and the segments 16 have equal wave impedances. The goal is achieved by the fact that a quarter-volt matching transformer is connected to the branch point of each PDG through an introduced two-string matching transformer, each of which includes loops 7 and 8, segment 9 of the transmission line. The first CDs 10, 11, 12 and the second CDs 13, 14, 15, respectively, 1 slug are connected to the ends of loops 7 and 8. // 1O tee) 4 & Z3 SP 23 15

Description

,

I The invention relates to microwave radio technology and can be used in various receivers and transmitters.

I The purpose of the invention is to perform matching with simultaneous switching on of a fecex or several output channels. The drawing shows an electrical schematic diagram of a multi-channel switch. i Multichannel switch contains input channel 1, output channels 2-5 and sequentially branched switching groups

HGRPG) S input shoulders of which include quarter-wave matching trans-transformers 6, two-stub matching transformers, each of which includes loops 7 and 8, and a segment of the transmission line, and the first commuting are connected to the ends of the 1 1 loops 7 and 8 diodes 10-12, and the second one 1 wipe diodes 13-15, respectively. The output shoulders of the PRPG contain a section of 16 transmission lines and third commuting diodes 17–22. The capacitors 23 serve for uncoupling the control signal supply circuits from the microwave signal to the feed channel 1 and the segments 16 have {equal wave impedances. : At the branching point of each GPRS 1, there is a place for discontinuity, which 1 | This leads to the fact that the input shoulders are loaded onto the Kotor complex load takes on two different values, depending on the state of the third switching diodes 17-22.

Multichannel switch works as follows

When a control signal is applied, for example, to the third switching diodes 18 and 20 and de-energizing the first and second switching diodes 10 and 13 rt 11 and 14, the inhomogeneity together breaking the PRGD is transformed by a two jeef matching transformer, including loops 7 and 8 and

0

0

with

five

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0

35

40

It is transformed into a pure resistance, which is transformed by a quarter-wave 1 m transformer 6 into a wave resistance of the input channel 1.

When the control signal is disconnected, for example, from the third switching diode 20, the output channel 3 opens to a mass. In doing so, the control signal is transmitted to the first and second commutating diodes 11 and 14, changing the electrical lengths of the loops 7 and 8. so that the heterogeneity at the junction point of the PRGD again transforms into a pure resistance, which the quarter wave matching transformer 6 transforms into a wave the resistance of the input channel 1. Thus, in both cases, the output channel 1 becomes consistent.

Similarly, it turns on any number of output channels in any combination.

Claims (1)

Invention Formula A multichannel switch containing sequentially branched switching groups, the input arm of each of which includes a quarter-wave matching transformer and the first and second switching diodes, and a third switching diode included in each output plug, characterized in that, in order to improve coordination while simultaneously turning on all or several output channels, a quarter-wave transformer is connected to a branch point of each successively branched switching group through introduced double stub matching transformer, the ends of which are connected respectively shpeyfov first and second switching diodes.