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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, B1 Designated state bacule The wiring pattern is symmetric to the bascuoe complex operator Ma 2 made up of operators 41, 51, Actually achieving this feature entirely valid for moderately high frequencies, that is to say until 4 to 5 GHz, is opposed to such operator can operate at higher frequencies.
However, the flip-flop 6 is composed of operators NOR and OR, according to the bascul diagram of Figure 5, and this configuration makes it possible to use in the actual integration on a semiconductor wafer, of the transistors to a single grid, as shown in the electrical diagram of Figure 7.
R-S-T flip-flop – это Что такое R-S-T flip-flop?
The operators of the output signals rsg fed back. 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: Figure 9 shows the circuit diagram of the latch according to the invention and sets of components which constitute elementary operators are surrounded by basfule dashed line for ease of identification.
Method of combining an analysis filter bank following a synthesis filter bank and structure therefor. Semiconductor device including embedded crystalline back-gate bias planes, related design structure and method of fabrication. 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 An improvement which allows to double the maximum of a frequency basculee in addition to the fact that the master carrier and the slave operator are identical, is to use a clock locking doors, that is to say having dst latch RSTT type, wherein T is the complementary signal of the input signal T.
Logical flipflop as claimed in Claim 1, characterized in that: Similarly, the OR operator of the second stage 71 delivers on its output a signal applied simultaneously NOR operators of the first stage 31 and third stage 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 second advantage is that the functions OR and NOR are separated, and this advantage will be shown later.
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. In this case, the input signals on both inputs E and E must necessarily be complementary. Date of ref document: This circuit is used in the interfaces between the very high frequencies that are measured in GHz and the monitoring or analysis systems operating at lower frequencies that are measured in MHz.
Without going into the details of such a scale that is part of the prior art, we see that it consists of four complex operators, two masters complex operators Ma and Ma 2 left of the figure and two complex operators and Esc esc 2 on the right of FIG. Rzt Q and Q outputs of the slave basclue are partially looped on the two inputs R and S of the basic master operator Ma. Year of fee payment: An approximation must be made between the flip-flop of Figure 2 and that of Figure 6.
RSTT the flip-flop according bascle 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.
Bascule rst pdf
It is that shown by Figure 5. Indeed, while the flip-flop of Figure 2 used two complex masters operators Ma and Ma 2 and two complex operators Esc slaves 1 and Esc 2 include the same configuration master-slave flip-flop of Figure 6, bsacule over the drawing by two dotted lines that define the master and slave traders.
But it is interesting in some cases to have more than two inputs: The primary interest of this kind structure is that the transistors used in NOR operators for the inputs labeled A, B, C and D are single-gate transistors, that is to say it will be possible to carry out dimensional grids much smaller corresponding to greater frequencies.
The complex operators Ma and Ma 2 are decided in Figure 8 by two dotted lines and the name of Ma. Thus, by way of example, the maximum frequency of the frequency divider bwscule to the invention is 6.
This is what results is covered by the frequency divider according to the invention. These operators are looped between them, they receive basfule signals T and T, and deliver output signals Q and Q of quite comparable to the flip-flop of Figure 2. OR operators 61 and 71 are arranged on the vertical diagonal of the basculs and constitutes the second stage of the divider by 2. It also relates to the application of the logic flip-flop to a frequency divider by 2, operating the DC to 10 GHz in frequency, this frequency divider being designed in particular in the form of integrated circuit on gallium arsenide.
Furthermore, the OR operator 62 of the fourth stage delivers at its output a signal applied in parallel to the NOR operator of the first stage 51 and the NOR operator 42 of the third floor. 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.
It is thus seen that the four OR gates, 61, 62, 71 and 72 issue, each of the signals to two operators NOR identical of the first and third stages. The currently known frequency dividers work up to frequencies of 5.
For example, a microwave device on gallium arsenide are often associated circuits on silicon in said ECL technology. Indeed, in a microwave system are generally associated means or control and processing elements in the form of integrated circuits working at maximum frequencies of the order of a few hundred MHz. The invention will be better understood from the description of the fast flip-flop which is based on the appended figures, which represent: A frequency divider operating in the range 0 to 10 GHz, characterized in that it comprises at least a logic flip-flop according to any one of claims 1 to 5.
However, firstly the frequency divider designed to work at very high frequencies such as 10 GHz, resulting in that the transistors are extremely small dimensions and even smaller grids and thus reach the limits of technology. These two operators in 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.
But by total optimization of the parameters of the circuit, and particularly the dimensioning of the transistors, with 0. Moreover, it is necessary that the selected logical scheme is compatible with the most advanced techniques, especially regarding the dimensioning of the components and their implementation bascjle fast materials of the family of gallium arsenide and compounds III- V.
Indeed, when the operating frequencies of a microelectronic device are measured in GHz, the dimensioning of the components, that is to say for example the gate length of a field effect transistor which takes importance n ‘ is significant since in some cases it is unclear achieve sufficiently fine grids, due to the limits basscule by the masking techniques, although this example is cited only to show the importance rsh compatibility between the schematic and wiring its realization.
cours registre bascule pdf – PDF Files
Logic latch operating from dc to 10 ghz, and frequency divider comprising this latch. General purpose divide by two logic circuit – has four similar gates and logic inverter composed of transistor stages. 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.
Logical flipflop as claimed in Claim 1, characterized in that, for each of the four operators of the input stage 21, 31, 41, 51their output signal is sent in parallel to an OR operator of the second stage 61, 71 and to an OR operator of the third stage 62,