scholarly journals OPTIMIZATION TECHNIQUE FOR LUMPED-ELEMENT LC RESONATOR CONSTRUCTED ON MULTILAYER SUBSTRATE

2021 ◽  
Vol 97 ◽  
pp. 157-163
Author(s):  
Ke Cao ◽  
Xia Pan
2019 ◽  
Vol 198 ◽  
pp. 00008
Author(s):  
Martina Esposito ◽  
Joseph Rahamim ◽  
Andrew Patterson ◽  
Matthias Mergenthaler ◽  
James Wills ◽  
...  

Josephson parametric amplification is a tool of paramount importance in circuit-QED especially for the quantum-noise-limited single-shot read-out of superconducting qubits. We developed a Josephson parametric amplifier (JPA) based on a lumped-element LC resonator, in which the inductance L is composed by a geometric inductance and an array of 4 superconducting quantum interference devices (SQUIDs). We characterized the main figures of merit of the device, obtaining a −3 dB bandwidth BW = 15 MHz for a gain G = 21 dB and a 1 dB compression point P1dB = −115 dBm. The obtained results are promising for the future use of such JPA as the first stage of amplification for single-shot readout of superconducting qubits.


2011 ◽  
Vol 131 (4) ◽  
pp. 654-666
Author(s):  
Qingliang Zhang ◽  
Takahiro Ueno ◽  
Noboru Morita

Author(s):  
Krishna Rudraraju Chaitanya ◽  
P. Mallikarjuna Rao ◽  
K. V. S. N. Raju ◽  
G. S. N. Raju

Author(s):  
. Geetanjli

The power control in CDMA systems, grant numerous users to share resources of the system uniformly between each other, leading to expand capacity. With convenient power control, capacity of CDMA system is immense in contrast of frequency division multiple access (FDMA) and time division multiple access (TDMA). If power control is not achieved numerous problems such as the near-far effect will start to monopolize and consequently will reduce the capacity of the CDMA system. However, when the power control in CDMA systems is implemented, it allows numerous users to share resources of the system uniformly between themselves, leading to increased capacity For power control in CDMA system optimization algorithms i.e. genetic algorithm & particle swarm algorithm can be used which regulate a convenient power vector. These power vector or power levels are dogged at the base station and announce to mobile units to alter their transmitting power in accordance to these levels. The performances of the algorithms are inspected through both analysis and computer simulations, and compared with well-known algorithms from the literature.


2020 ◽  
Vol 2 (3) ◽  
pp. 145-152
Author(s):  
V. D. KOVALEVA ◽  
◽  
Z. R. KOCHKAROVA ◽  
L. V. IONIDI ◽  
◽  
...  

The article is devoted to the urgent problem of taxation of the EAEU countries, the methods of tax burden optimization are disclosed, the feasibility of using the tax burden indicator as a criterion for the level of economic development of a business entity is substantiated, the tax burden of the countries of the Eurasian and post-Soviet space is analyzed, a tax burden optimization technique based on controlling tools is proposed.


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