Results 261 to 270 of about 464,771 (298)
Some of the next articles are maybe not open access.
Tunable combline bandstop filter with constant bandwidth
2009 IEEE MTT-S International Microwave Symposium Digest, 2009A new method for the design of tunable bandstop filters is presented. It is based on a dual-band combline structure consisting of a wideband bandpass filter with integrated bandstop filter. The bandstop filter exhibits the very useful property that its bandwidth remains constant as the center frequency is tuned, without the need for coupling adjustment.
Alaa I. Abunjaileh, Ian C. Hunter
openaire +1 more source
A grounded constant current source with improved bandwidth
IEEE Transactions on Circuits and Systems, 1978A grounded constant current source employing a single operational amplifier is discussed. It is shown that improved bandwidth and reduced slew rate limitations are obtained with this circuit.
A. Budak, R. Geiger
openaire +1 more source
HybridORAM: Practical oblivious cloud storage with constant bandwidth
Information Sciences, 2019Abstract Along with the popularity of outsourcing data to the cloud server, data privacy becomes a central consideration. Because encryption alone has been proved insecure for the leakages of access pattern, Oblivious RAM (ORAM) was proposed to protect where, when and how often the data block has been accessed.
Bo Li +5 more
openaire +1 more source
Bandwidth extension of a CMOS constant Q active
2010 International Conference on Computer and Communication Technology (ICCCT), 2010In this paper, CMOS active inductor with extended bandwidth using a compensation resistor is presented. This active inductor is used as an active component in the designing of bandpass filter. Moreover, the quality factor of the CMOS active inductor is almost independent of signal swing.
Astha Neekhra, Maneesha Gupta
openaire +1 more source
Bandwidth-Based Prefetching for Constant-Stride Arrays
2004We describe a new algorithm for prefetching arrays that are accessed with a compile-time known constant stride. We demonstrate a hardware limitation that has not previously been dealt with (limited off-chip bandwidth) and show its effect on prefetching. Our new algorithm is designed to cope with this hardware limitation.
Steven O. Hobbs +2 more
openaire +1 more source
Gain-tuned active filters with constant percent bandwidth
IEEE Transactions on Circuits and Systems, 1975It is shown that the amplifier gains in a two-amplifier RC active filter section can be used to tune the center frequency of its bandpass characteristic in such a manner that the percent bandwidth remains essentially constant over the tuning range. Low-pass and high-pass tunable sections with constant pole- Q are also derived.
S. Bruminhent, K. Su
openaire +1 more source
A Tunable Bandpass Filter with Constant Absolute Bandwidth
Journal of Electromagnetic Waves and Applications, 2011A novel tunable bandpass filter with constant absolute bandwidth is presented in this paper. Introducing a mixed electric and magnetic coupling structure and a new external coupling scheme, nearly constant absolute bandwidth is maintained across the tuning range. Theoretical analysis and design approach are demonstrated. The proposed filter is designed
B. Liu, F. Wei, Q. Y. Wu, X. W. Shi
openaire +1 more source
Bandwidths of the Equal Time-Constant Amplifier
Nuclear Instruments and Methods, 1960S>Formulas are developed for the effective noise bandwidths for amplifiers with both upper and lower pass band limits defined by equal RC time constants. The half-power or 3db bandwidth is found to be twice the center frequency; whereas the effective noise bandwidth is found to be proportional to the shot noise in addition to being dependent on the ...
openaire +1 more source
Constant bandwidth voltage amplification using current conveyors
International Journal of Electronics, 1988Traditional feedback voltage amplifier formulations suffer from the restriction of a constant gain-bandwidth product, reducing the bandwidth dramatically at higher gains. A feedback voltage amplifier designed around a current conveyor or current amplifier completely overcomes this restriction and permits maximum bandwidth to be obtained for all values ...
openaire +1 more source
Ultra-Selective Constant-Bandwidth Electromechanically Tunable HTS Filters
2006 IEEE MTT-S International Microwave Symposium Digest, 2006We report an ultra narrow band 3-pole tunable filter. Tuning from 770 MHz up to 930 MHz, which is about 20%, was demonstrated. Insertion loss was 0.7 dB at 770 MHz and 1.6 dB at 930 MHz. Coupling bandwidth was kept almost constant over the entire range. A novel filter configuration and tuning algorithm is proposed and demonstrated.
Genichi Tsuzuki +4 more
openaire +1 more source