scholarly journals Высокоселективный полосковый фильтр нижних частот с уровнем заграждения более 100 dB в широкой полосе

2020 ◽  
Vol 46 (8) ◽  
pp. 10
Author(s):  
Б.А. Беляев ◽  
А.М. Сержантов ◽  
Ан.А. Лексиков ◽  
Я.Ф. Бальва ◽  
Е.О. Грушевский ◽  
...  
Keyword(s):  
Frequency Response ◽  
Relative Permittivity ◽  
3D Model ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Electrodynamic Analysis ◽  
Low Pass ◽  
Filter Prototype ◽  
Fifth Order ◽  
Suspended Substrate

A new miniature strucuter of a highly selective low-pass filter (LPF) on a suspended substrate with a double-sided topology of stripline conductors has been proposed. The steepness of the slope of the frequency response of the filter and the depth of the stopband are determined by the zeros of the transmission coefficient, which number is equal to the order of the filter. The synthesis of a fifth-order low-pass filter prototype on a 0.5-mm thick alumina substrate with a relative permittivity εr = 9.8 was performed by numerical electrodynamic analysis of its 3D model. The filter passband cut-off frequency at the level of –1 dB fc = 1.75 GHz, and the length of the stopband at the −100 dB level extends to a frequency of 4.4 fc.

scholarly journals Микрополосковые фильтры с широкими полосами пропускания

2021 ◽  
Vol 47 (7) ◽  
pp. 30
Author(s):  
Б.А. Беляев ◽  
С.А. Ходенков ◽  
И.В. Говорун ◽  
А.М. Сержантов
Keyword(s):  
3D Model ◽  
Experimental Sample ◽  
Central Frequency ◽  
Pass Filter ◽  
Low Pass Filter ◽  
High Impedance ◽  
Electrodynamic Analysis ◽  
Low Pass ◽  
Measured Frequency Response ◽  
Good Agreement

New microstrip designs of bandpass filters based on a low-pass filter was developed. Several or all the sections of high-impedance microstrip lines of the designed filters were connected to the ground by stubs. The filters have high frequency-selective properties, and their fractional bandwidths are in the range of 30 % –150 %. An experimental sample of a filter with a 2 GHz central frequency of the passband and 70% fractional bandwidth was made on an alumina substrate 1 mm thick. The filter has a substrate area of 46 × 21 mm2. Good agreement of the measured frequency response of the filter with the characteristics calculated by the numerical electrodynamic analysis of its 3D model was shown.

Design of an Ideal Low Pass Microstrip Line Filter Using the Defected Ground Structure

2018 ◽  
Vol 876 ◽  
pp. 133-137
Author(s):  
Ping Cheng Chen ◽  
Chung Long Pan ◽  
J.D. Huang ◽  
S.H. Hong
Keyword(s):  
Frequency Response ◽  
Microstrip Line ◽  
Geometric Shape ◽  
Center Frequency ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Ansoft Hfss ◽  
Low Pass

A design and simulation for low pass microstrip line filter with defected ground structure has been researched, the main purpose is with the simplest method to design an ideal low pass filter. In this paper, simulated soft (Ansoft HFSS V.6.0) used to be simulated the frequency response under different geometric shape of DGS. The results show good performance of a low pass filter with DGS. Final, a low pass filter with DGS design and fabricated, The properties are shown as flow: center-frequency: 7.28G, S21:-47dB, cut-off frequency: 5.88GHz.

METHOD FOR MEASURING THE EQUIVALENT PARAMETERS OF INDUCTORS AS PART OF LOW-PASS FILTERS

2020 ◽  
pp. 19-29
Author(s):  
A. G. Zinovev ◽  
I. A. Shestakov
Keyword(s):  
The Self ◽  
Network Analyzer ◽  
Q Factor ◽  
Practical Application ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Loss Resistance ◽  
Low Pass ◽  
Low Pass Filters ◽  
Fifth Order

A method for measuring the self-capacitance, inductance, loss resistance, and Q-factor of inductors as part of an LC low-pass filter at its operating frequency is presented. An example of the practical application of this method for measuring the equivalent pa-rameters of inductors and capacitors as part of a fifth-order Cauer low-pass filter using network analyzer.

scholarly journals Floating Active Inductor Based Trans-Impedance Amplifier in 0.18 μm CMOS Technology for Optical Applications

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1547
Author(s):  
Xiangyu Chen ◽  
Yasuhiro Takahashi
Keyword(s):  
Power Dissipation ◽  
Supply Voltage ◽  
Cmos Technology ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Chip Area ◽  
Active Inductors ◽  
Low Pass ◽  
Optical Applications ◽  
Fifth Order

In this paper, a transimpedance amplifier (TIA) based on floating active inductors (FAI) is presented. Compared with conventional TIAs, the proposed TIA has the advantages of a wider bandwidth, lower power dissipation, and smaller chip area. The schematics and characteristics of the FAI circuit are explained. Moreover, the proposed TIA employs the combination of capacitive degeneration, the broadband matching network, and the regulated cascode input stage to enhance the bandwidth and gain. This turns the TIA design into a fifth-order low pass filter with Butterworth response. The TIA is implemented using 0.18 μ m Rohm CMOS technology and consumes only 10.7 mW with a supply voltage of 1.8 V. When used with a 150 fF photodiode capacitance, it exhibits the following characteristics: gain of 41 dB Ω and −3 dB frequency of 10 GHz. This TIA occupies an area of 180 μ m × 118 μ m.

Closed horizontal wire loop as a low–pass filter in tem measuring systems

2020 ◽  
Author(s):  
Nikolay O. Kozhevnikov ◽  
Keyword(s):  
Frequency Response ◽  
High Frequency ◽  
External Noise ◽  
Measuring System ◽  
Electromagnetic Noise ◽  
Measuring Systems ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Horizontal Wire

The paper discusses the possibility of using a closed horizontal loop in a TEM measuring system to reduce the external high–frequency electromagnetic noise induced in a receiving loop. It is shown that the effect of an additional loop on the frequency response of the TEM measuring system is similar to that of a low–pass filter. In order to effectively reduce external noise, one should locate the auxiliary loop as close as possible to the receiver one.

DGS-SMS Compact Fifth Order Low Pass Filter

2017 ◽  
Author(s):  
Heba El-Halabi ◽  
Soubhi Abou-Chahine ◽  
Darine Kaddour ◽  
Emmanuel Pistono ◽  
Philippe Ferrari
Keyword(s):  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Fifth Order

Conception D'un Filtre Passe-Bas En Technologie Microruban

1997 ◽  
Vol 34 (2) ◽  
pp. 133-140
Author(s):  
Mohammed Bekhti
Keyword(s):  
Microstrip Technology ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Technologie Microruban ◽  
Mathematical Expressions ◽  
Low Pass ◽  
Fifth Order

The article describes the design of a fifth order low pass filter using microstrip technology. Mathematical expressions are derived for this case (fifth order) and all component values are shown.

Turbulence Estimation Using Fast-Response Thermistors Attached to a Free-Fall Vertical Microstructure Profiler

2016 ◽  
Vol 33 (10) ◽  
pp. 2065-2078 ◽  
Author(s):  
Yasutaka Goto ◽  
Ichiro Yasuda ◽  
Maki Nagasawa
Keyword(s):  
Temperature Gradient ◽  
Frequency Response ◽  
Turbulence Intensity ◽  
Free Fall ◽  
Fast Response ◽  
Double Pole ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Wide Range ◽  
Low Pass

AbstractEstimation of turbulence intensity with a fast-response thermistor is examined by comparing the energy dissipation rate from a Fastip Probe, model 07 (FP07), thermistor with from a shear probe, both of which are attached to a free-fall microstructure profiler with the fall rate of 0.6–0.7 m s−1. Temperature gradient spectra corrected with previously introduced frequency response functions represented by a single-pole low-pass filter yields with a bias that strongly depends on turbulence intensity. Meanwhile, the correction with the form of a double-pole low-pass filter derives less bias than of single-pole low-pass filter. The rate is compatible with when the double-pole correction with the time constant of 3 × 10−3 s is applied, and 68% of data are within a factor of 2.8 of in the wide range of = 10−10–3 × 10−7 W kg−1. The rate is still compatible with even in the anisotropy range, where the buoyancy Reynolds number is 20–100. Turbulence estimation from the fast-response thermistor is thus confirmed to be valid in this range by applying the appropriate correction to temperature gradient spectra. Measurements with fast-response thermistors, which have not been common because of their poor frequency response, are less sensitive to the vibration of profilers than those with shear probes. Hence, measurements could be available when a fast-response thermistor is attached to a CTD frame or a float, which extends the possibility of obtaining much more turbulence data in deep and wide oceans.

Design of Fifth Order Maximally Flat Stepped Impedance Low Pass Filter with Increased Attenuation Rate

2006 ◽  
Vol 47 (3) ◽  
pp. 123-127
Author(s):  
P K Singhal ◽  
Vivek Sharma ◽  
R N Baral ◽  
R P S Kushwah
Keyword(s):  
Pass Filter ◽  
Low Pass Filter ◽  
Attenuation Rate ◽  
Low Pass ◽  
Fifth Order
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