A high frequency CMOS 4/sup th/ order digitally programmable bandpass filter

Author(s):  
A. Younis ◽  
M. Amourah ◽  
R. Geiger
1998 ◽  
Vol 33 (4) ◽  
pp. 614-625 ◽  
Author(s):  
A. Fabre ◽  
O. Saaid ◽  
F. Wiest ◽  
C. Boucheron

2003 ◽  
Vol 39 (15) ◽  
pp. 1095 ◽  
Author(s):  
B. Calvo ◽  
S. Celma ◽  
M.T. Sanz

2020 ◽  
Author(s):  
Abhinaya M ◽  
Bhavika B ◽  
Harsh Dashora ◽  
Jitendra Kumar

A Radio frequency filters having applications that demand high performance and intends to contribute in system’s size and cost must be achieved by a different approach. That might be in using an advanced material, planar technology or dielectric resonators, as filter involves in many fields like wireless receivers, transmitters and in multiple locations inside an RF system to shed noise. This paper primarily demonstrates how bandpass filter exhibits itself differently when realized using lumped elements or microstrip transmission line to acquire minimum losses when transmitting high frequency signals over long or short distances in planar technology. And explains in detail to design and simulate microstrip coupled line bandpass filter.


Author(s):  
Huiyu Jin ◽  
Yang Chen ◽  
Weiyao Lan

Abstract Active disturbance rejection control (ADRC) is a quickly developing practical control technology while its ability to reject external disturbance is necessary to investigate deeply. Focusing on the simple case that the plant is an exactly known second order plant, this paper investigates the external disturbance rejection of linear ADRC. It reveals a separation diagram, in which the external disturbance goes into the output via a bandpass filter. That is the reason why linear ADRC can reject both low-frequency and high-frequency external disturbance.


Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sheng Zhang ◽  
Chao Ji ◽  
Meng-Han Tong ◽  
Zhen-Jiang Xie ◽  
Cong Xu

Abstract A compact dual-band balanced bandpass filter with high frequency selectivity and adjustable passband based on the perturbed circular substrate integrated waveguide cavity is firstly proposed in this paper. Two pairs of metallic vias are located at 45°direction of cavities to separate a pair of degenerate modes (TM110 modes) to achieve the differential-mode (DM) dual-band response. Moreover, the perturbation vias can also be used to control the center frequency of the second DM passband while the first one still stays unaffected. The introduction of source-load coupling makes the filter exhibit excellent selectivity. And four controllable transmission zeros appear near two DM passbands. Finally, good common-mode suppression has been got owing to the proposed balanced structure. The measured results are in accordance with the simulated ones well.


2018 ◽  
Vol 38 (2) ◽  
pp. 96-102 ◽  
Author(s):  
Zongrui He ◽  
Kaijun Song ◽  
Zihang Luo ◽  
Maoyu Fan ◽  
Yu Zhu ◽  
...  

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