Results 41 to 50 of about 85,450 (309)

Synthesis Applied 4^th-Order Constant Absolute Bandwidth Frequency-Agile Bandpass Filter With Cross-Coupling

IEEE Access, 2018
A novel 4th-order cross-coupled electrical tunable bandpass filter with constant absolute bandwidth and high frequency selectivity is proposed. The electric coupling coefficients and the magnetic coupling coefficients of the cross-coupled resonators and ...
Dengyao Tian, Quanyuan Feng, Qianyin Xiang   +2 more
doaj   +1 more source

Reconfigurable Filter for Bandpass-to-Absorptive Bandstop Responses

IEEE Access, 2020
A frequency tunable filter with a bandpass-to-absorptive bandstop reconfigurable characteristic is studied, designed and validated theoretically and experimentally.
Tae-Hak Lee, Jean-Jacques Laurin, Ke Wu
doaj   +1 more source

A novel tunable multimodal bandpass filter

2011 41st European Microwave Conference, 2011
This paper presents a novel uniplanar tunable bandpass filter. In this filter, each resonator can be reconfigured easily using PIN diodes or MEMS switches. Design equations are derived from a simple circuit model which takes into account the multimodal behavior of the coplanar waveguide.
Contreras Lizarraga, Adrián Arturo, Pradell i Cara, Lluís, Ribó, M.   +2 more
openaire   +2 more sources

Widely Tunable TM-Mode Dielectric Filters With Constant Absolute Bandwidth Using Re-Entrant Caps

IEEE Journal of Microwaves, 2023
This paper reports octave tunable dielectric combline bandpass filters with constant absolute bandwidth (CABW) using a novel re-entrant cap tuning technique.
Abdulrahman Widaa, Michael Hoft
doaj   +1 more source

Varactor-Based Continuously Tunable Microstrip Bandpass Filters: A Review, Issues and Future Trends

IEEE Access
Electronically tuned bandpass filters are crucial frequency-selective devices in tunable RF front-ends and are extensively utilized in the fields of communications and sensing.
Mengjie Qin, Zhongmao Li, Zhipeng Ren, Pengzhan Liu, Lanlan Liao, Xin Qiu, Zhiqiang Li   +6 more
doaj   +1 more source

Decoding THz‐Driven Dynamic Fingerprints of Ferroelectric Nanotwin Networks

Advanced Materials, EarlyView.
ABSTRACT Ultrafast polarization dynamics in ferroelectrics are of considerable interest for high‐speed tunable dielectrics and electro‐optics. Extended domain wall networks formed in ferroelectric twin nanodomains can support collective dynamics in the terahertz regime but require techniques that track polarization and strain evolution driven by ...
Xiaojiang Li, Aiden Ross, Vladimir A. Stoica, Sujit Das, Sankalpa Hazra, Huaiyu (Hugo) Wang, Hari Padma, Matthias C. Hoffmann, Patrick Kramer, Sanghoon Song, Silke Nelson, Takahiro Sato, Diling Zhu, Ramamoorthy Ramesh, Lane W. Martin, Yue Cao, John W. Freeland, Aaron M. Lindenberg, Haidan Wen, Long‐Qing Chen, Venkatraman Gopalan   +20 more
wiley   +1 more source

Tunable Microwave Bandpass Filters With Complementary Split Ring Resonator and Liquid Crystal Materials

IEEE Access, 2019
In this paper, a novel planar waveguide filter based on liquid crystal materials is devised, and a half-mode corrugated substrate integrated waveguide (HMCSIW) tunable bandpass filter with complementary split ring resonator (CSRR) structure is proposed ...
Di Jiang, Yupeng Liu, Xiaoyu Li, Guofu Wang, Zhi Zheng   +4 more
doaj   +1 more source

Cascaded wavelength conversion by four-wave mixing in a strained semiconductor optical amplifier at 10 Gb/s [PDF]

, 1997
We demonstrate for the first time cascaded wavelength conversion by four-wave mixing in a semiconductor optical amplifier. Bit-error-rate performance of
Geraghty, David F., Lee, Robert B., Mathur, Atul, Vahala, Kerry J., Verdiell, Marc, Ziari, Mehrdad   +5 more
core   +1 more source

Time‐Resolved Simultaneous Mapping of Thickness and Nanoparticle Concentration in Nanofluid Thin Films via Imaging Ellipsometry and Deep‐UV Reflectance Imaging

Advanced Materials Interfaces, EarlyView.
This study establishes a dual‐channel optical metrology framework integrating phase‐shifting imaging ellipsometry and deep‐UV reflectance imaging. This label‐free approach enables simultaneous, time‐resolved mapping of film thickness and nanoparticle (NP) concentration in dynamic nanofluid thin films.
Eita Shoji, Keita Aizawa, Hiroki Kusudo, Tetsushi Biwa   +3 more
wiley   +1 more source

Optically tunable acoustic wave band-pass filter

AIP Advances, 2014
The acoustic properties of a hybrid composite that exhibits both photonic and phononic behavior are investigated numerically with finite-element and finite-difference time-domain simulations.
N. Swinteck, P. Lucas, P. A. Deymier
doaj   +1 more source