10 MHz −3 dB Bandwidth $360\ \mu \mathrm{W}$ Power Source-Follower Low-Pass Filter for Multi-Channel Acoustic Analog Front-End in CMOS $0.18\ \mu \mathrm{m}$

2019 ◽  
Author(s):  
Elia A. Vallicelli ◽  
Andrea Baschirotto ◽  
Marcello De Matteis
Keyword(s):  
Power Source ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Front End ◽  
Analog Front End ◽  
Source Follower ◽  
Low Pass ◽  
Acoustic Analog

A Low Power Low-Pass Fourth-Order Filter for WiMAX/LTE Receiver in CMOS 45nm Technology

2016 ◽  
Vol 26 (03) ◽  
pp. 1750048 ◽  
Author(s):  
Vida Orduee Niar ◽  
Gholamreza Zare Fatin
Keyword(s):  
Low Power ◽  
Fourth Order ◽  
Supply Voltage ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Power Filter ◽  
Order Filter ◽  
Source Follower ◽  
Low Pass ◽  
Circuit Technique

In this paper, a [Formula: see text]-[Formula: see text] low-pass and low power filter with tunable in-band attenuation for WiMAX/LTE receiver is presented. The fourth-order filter consists of two cascaded biquad stages. The source-follower (SF) stage is used as a key building block in these biquads. In this paper, we have presented a circuit technique to reduce the nonlinearity of the SF stage resulting from unmatched signal swings at the gate and source terminals of the input transistor. The proposed SF stage, is used for design of a linear biquad which is then utilized in a fourth-order Butterworth low-pass filter. The simulation results of the filter for bandwidth of 10 MHz show that the IIP3 of the filter is equal to 8.22[Formula: see text]dBm, in-band noise density is 100[Formula: see text]nV/[Formula: see text]Hz and power consumption is 5.9[Formula: see text]mW. The supply voltage of the filter is equal to 1[Formula: see text]V.

scholarly journals Design and Analysis of Microstrip Low Pass and Bandstop Filters

2019 ◽  
Vol 8 (3) ◽  
pp. 6944-6951
Keyword(s):  
Communication Systems ◽  
Wireless Communication Systems ◽  
Fractional Bandwidth ◽  
Coupled Line ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Front End ◽  
Low Pass ◽  
Bandstop Filter ◽  
Bandstop Filters

In this paper a simple approach of designing the microstrip low pass and bandstop filter is presented. The microstrip stub based low pass filter with 2.4 GHz and attenuation of more than 60 dB at 4 GHz frequency is designed. The bandstop filter is also designed with notch characteristics at 2.4 GHz frequency. The fractional bandwidth of designed filter is estimated to be 30% with 117 dB of attenuation is recorded at notch frequency of 2.4 GHz in SIR based bandstop filter topology. The bandstop filter is implemented using coupled line structure as well as step impedance resonator techniques. The filters are designed on Roger RC40003C substrate. The design and analysis of filter with its layout and EM simulation is accomplished using Agilent ADS software. These filters can be used in front end transceiver systems, antennas, and modern wireless communication systems.

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