bascule rst pdf Bascule Flip Flop Une bascule RST R S T. 21 Les bascules T 5. 3 T Q 0 Q 1 Une bascule T T. 22 Les bascules D latch 5. 4 Cest une bascule. Man found guilty of stealing historic Ind. bridge and selling for scrap · For more than 20 years, Kenneth Morrison had been eyeing a century-old railroad bridge in. de definition VHDL des bascules * — * * — * Rem: Les fichiers MDL resultant ( RST=’0′))) REPORT “SET et RESET simultanes ou indefinis sur bascule D”.
|Published (Last):||14 October 2013|
|PDF File Size:||7.16 Mb|
|ePub File Size:||12.33 Mb|
|Price:||Free* [*Free Regsitration Required]|
Lapsed in a contracting state announced via postgrant inform. The output 18 of the OR operator 72 of the third stage is fed back to an input of the first NOR operator 21 of the first stage, and the output 19 of the OR operator 62 of the third stage is fed back an input of the fourth NOR operator 51 of the first stage.
Bascule rst pdf
But it is interesting in some cases to have more than two inputs: It’s that kind of scale that is used most frequently for the most dst frequency dividers being made and the architecture used in the prior art, is shown in Figure 3. The development of microelectronics microwave, that is to say one that is carried out on new materials type gallium arsenide and other materials derived families III-V and II-VI, required the parallel developing means of control and processing microwave signals.
It is possible to improve the total transition time of the latch, that is to say, its operating frequency, so to simplify this flip-flop to reduce the number of stages. The complex operators Ma and Ma 2 are decided in Figure 8 by two dotted lines and the name of Ma. The invention will be better understood from the description of the fast flip-flop which is based on the appended figures, which represent: The present invention rocker and frequency divider 2 is specified by the following claims.
So there is redundancy between the first and third floor, it is possible to remove the third floor to compact the rocker: The divisors of the best performing aperiodic frequencies are obtained by looping a so-called master-slave RS flip-flop shown in Figure 1. The present invention relates to a very fast logic flip-flop, whose structure has been studied in order to simplify the internal organization of the rocker and to improve performance, especially in the very high nascule between 5 and 10 GHz.
To divide the frequencies in ranges of 5 to 10 GHz, it is clear that one must have recourse to the most advanced techniques and that these frequency dividers are made with high-performance rsy effect transistors and bascile using a technology said logic interfaced field effect transistors BFL. The divider 2 according to the invention therefore appears to be essentially constituted by two complex operators Ma 1 and Ma 2, which control two elementary OR operators 62 and OR operators 61 and 71 are arranged on the vertical diagonal of the figure and constitutes the second stage of the divider by 2.
The operating frequency thus passes to 4. It is that shown by Figure 5.
Bascule rst pdf
These two operators rstt Figure 4 are surrounded by a dashed rectangle marked 1 are each as regards the, by a field effect transistor with two gates, each gate constituting one of the two inputs of an AND gate.
However, it can be seen that the rocker of Figure 6 comprises four stages of elementary operators, that is to say a first stage of NOR operators 21,31,41,51, a second stage of operators OR 61, 71, a third stage of NOR operators 22, 32, 42, 52, and a fourth stage of OR operators 62, For example, a microwave device on gallium arsenide are often associated circuits on silicon in said ECL technology. These operators abscule looped between them, they receive complementary signals T and T, and deliver output signals Q and Q of quite comparable to the flip-flop of Figure 2.
This is what results is covered by the frequency divider according to the invention. It is therefore necessary to interface the part of the system that works in the microwave generated by circuits on gallium arsenide, rts the part of the system that works with gst made of silicon, and therefore to a division of frequencies to lower GHz to MHz.
vascule Method of combining an analysis filter bank following a synthesis filter bank and structure therefor. Operators OR outputs 62 and 72 deliver signals Q and Q, further, the frequency is half of the input frequency on additional inputs E and E: Kind code of ref document: Semiconductor device including embedded crystalline back-gate bias planes, related design structure and method of fabrication.
Similarly, the two output OR operators are those which constitute the fourth stage of the divider by 2 in Figure 6. It is thus seen that the four OR gates, 61, 62, 71 and 72 issue, each of the bscule to two operators NOR identical of the first and third stages.
The currently known frequency dividers work up to frequencies of 5. The master operator Ma is constituted of elementary operators 21, 31 and 61, the master operator Ma 2 consists of elementary operators 41, 51 and The frequency divider according to the invention, that is to say also the flip-flop which is the basis of the embodiment of a divider has been designed with a dual purpose.
The OR operator of the second stage 61 basucle on its output a signal which is simultaneously applied to NOR operators 41 of the first floor and 22 on the third floor: The wiring pattern is symmetric to the second complex operator Ma 2 made up of operators 41, 51, RSTT the flip-flop according to the invention was developed for the realization of a frequency divider by 2, characterized by a very wide band of operation since its operation has been checked between the continuous and the X-band that is ie 10 GHz.
To facilitate comparison, Figure 8 and Figure 6, the same reference indices are preserved when they designate the same basic operators. A frequency divider operating in the range 0 to 10 GHz, characterized in that it comprises at least a logic flip-flop according to rsh one of claims 1 to 5. Logical flipflop as basculee in Claim 1, characterized in that: On the one hand, its electric scheme was optimized in order to simplify it, by reducing the number of stages, thus a reduction of the propagation times through the stages and consequently an increase in the maximum operating frequency.
In the field of the periodic frequency division, very interesting results rt been obtained in the band 5 to 15 GHz, using structures using planar Gunn diodes. The operators of the output signals are fed back.