Narrow-Band and Low-Loss Bandpass Filter for 5G Built of Silica-Based Post-Wall Waveguide

2021 ◽  
Author(s):  
Yusuke Uemichi ◽  
Shinnosuke Tsuchiya ◽  
Toru Yamaguchi ◽  
Xu Han ◽  
Osamu Nukaga ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Narrow Band ◽  
Low Loss

A novel low-loss 4-bit bandpass filter using RF MEMS switches

2021 ◽  
Author(s):  
Lulu Han ◽  
Yu Wang ◽  
Qiannan Wu ◽  
Shiyi Zhang ◽  
Shanshan Wang ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Rf Mems ◽  
Low Loss ◽  
Mems Switches ◽  
Rf Mems Switches

A Low Loss Fully Embedded Stripline Parallel Coupled BPF for Applications using the 60 GHz Band

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000050-000053
Author(s):  
Alexander Schulz ◽  
Sven Rentsch ◽  
Lei Xia ◽  
Robert Mueller ◽  
Jens Mueller
Keyword(s):  
Return Loss ◽  
Bandpass Filter ◽  
Coplanar Waveguide ◽  
Center Frequency ◽  
60 Ghz ◽  
Low Loss ◽  
Wireless Applications ◽  
High Data ◽  
V Band ◽  
Waveguide Transmission

This paper presents a low loss fully embedded bandpass filter (BPF) using low temperature co-fired ceramic (LTCC) for multilayer System-in-Package (SiP) and Multi-Chip-Module (MCM) applications, e.g. wireless applications for the unlicensed 60 GHz band. The measured insertion loss was 1.5 dB at the center frequency 58 GHz, and a return loss of less than −10 dB was achieved, including two grounded coplanar waveguide transmission line (CPWg) to stripline transitions. The four layers BPF has a 3 dB bandwidth of about 11 GHz which supplies e.g. broadband and high data rate applications. The whole BPF requires a substrate area of 5.6 × 2.1 × 0.42 mm3 with transitions and a shielding via fence. This BPF suits well for V-band applications in a LTCC package because of the compact dimensions and the good performance.

Compact low-loss narrow-band duplexer using low-impedance open-loop resonators for K-band radiometers

2019 ◽  
Vol 90 (5) ◽  
pp. 054705
Author(s):  
Ju Seong Park ◽  
Seung Hyun Min ◽  
Tae Gyu Kim ◽  
Hyun Chul Choi ◽  
Kang Wook Kim
Keyword(s):  
Narrow Band ◽  
Open Loop ◽  
Low Loss ◽  
K Band

A Simple and Reliable Dye Laser System for Spectroscopic Investigations

1972 ◽  
Vol 27 (4) ◽  
pp. 601-604b ◽  
Author(s):  
J. Kühl ◽  
G. Marowksy ◽  
P. Kunstmann ◽  
W. Schmidt
Keyword(s):  
Spectral Density ◽  
Narrow Band ◽  
Laser System ◽  
Interference Filter ◽  
Dye Laser ◽  
Quartz Plate ◽  
Simple System ◽  
Low Loss ◽  
Spectral Narrowing ◽  
Fabry Perot

Abstract Efficient spectral narrowing and accurately reproducible tuning of a dye laser has been achieved by the combination of a low-loss narrow-band interference filter and a solid-quartz-plate-Fabry-Perot-etalon. Bandwidths as small as 5-10-3 Å were obtained by this simple system increasing the spectral density by a factor of at least 2 · 103.

Low-loss and highly-selective differential bandpass filter on integrated passive device process

2018 ◽  
Vol 60 (4) ◽  
pp. 970-975 ◽  
Author(s):  
Chatrpol Pakasiri ◽  
Keng-Chi Hsu ◽  
Sen Wang
Keyword(s):  
Bandpass Filter ◽  
Low Loss ◽  
Passive Device

Design of 6-gon-Shaped Notch Filter for Cognitive Radio Applications

2018 ◽  
Vol 27 (06) ◽  
pp. 1850085
Author(s):  
A. Uma Maheswari ◽  
K. Latha
Keyword(s):  
Cognitive Radio ◽  
Return Loss ◽  
Group Delay ◽  
Bandpass Filter ◽  
Narrow Band ◽  
Notch Filter ◽  
Structural Features ◽  
Fractional Bandwidth ◽  
Multiple Mode ◽  
Mode Resonator

This paper presents a 6-gon-shaped bandpass and notch filters for Cognitive Radio (CR) applications. The bandpass filter consists of a 6-gon-shaped multiple mode resonator with interdigital coupling at both ends. The notch filter is derived from bandpass filter by embedding four identical Embedded Open Stubs (EOS) nearby the multiple mode resonators that introduce narrow band suppression in the desired passband. Such bandpass filter with notching band is required in practical CR systems in order to effectively sense the spectrum and avoid the interference between the systems working in same environment with the same frequency. The filter is simulated using an electromagnetic solver, IE3D. The group delay obtained for bandpass filter is below 0.2[Formula: see text]ns. With the above structural features, the overall dimension of the filter is [Formula: see text][Formula: see text]mm2 and the fractional bandwidth (FBW) of the proposed bandpass filter is more than 100% with optimal performances in terms of insertion loss, return loss, group delay and phase.

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