Results 11 to 20 of about 3,783 (193)
IEEE Access, 2020 A semi-lumped reconfigurable on-chip bandpass filter with GaAs pHEMT technology is presented in this paper. Three order tunable bandpass filter is designed with serial lumped capacitors, parallel resonators, and reconfigurable components.
Hao-Ran Zhu +3 more
doaj +1 more source
Frequency-Tunable and Pattern Diversity Antennas for Cognitive Radio Applications
International Journal of Antennas and Propagation, 2014 Frequency-tunable microstrip antennas, for cognitive radio applications, are proposed herein. The approach is based on tuning the operating frequency of a bandpass filter that is incorporated into a wideband antenna.
A. H. Ramadan +4 more
doaj +1 more source
Versatile Tunable Voltage-Mode Biquadratic Filter and Its Application in Quadrature Oscillator
Sensors, 2019 This paper presents a versatile tunable voltage-mode biquadratic filter with five inputs and three outputs. The proposed filter enjoys five single-ended output operational transconductance amplifiers (OTAs) and two grounded capacitors.
San-Fu Wang +3 more
doaj +1 more source
IEEE Access, 2020 This paper presents a miniaturized RF MEMS tunable bandpass filter design developed by application of folded ridged quarter-mode substrate integrated waveguide cavity.
Thomas R. Jones, Mojgan Daneshmand
doaj +1 more source
Angularly tunable bandpass filter: design, fabrication and characterization [PDF]
Optical Interference Coatings Conference (OIC) 2019, 2019 We present a thorough study of a bandpass filter for the near-infrared (IR) region, with bandwidth below 20 nm, high transmission, and a broad rejection band [350-1100] nm. This filter is angularly tunable between 0 and 50° and shows a shift of the central wavelength from 970 nm down to 880 nm, without major changes in its bandwidth and spectral shape ...
Lumeau, Julien +4 more
openaire +3 more sources
RF MEMS Based Tunable Bowtie Shaped Substrate Integrated Waveguide Filter [PDF]
Radioengineering, 2015 A tunable bandpass filter based on a technique that utilizes substrate integrated waveguide (SIW) and double coupling is presented. The SIW based bandpass filter is implemented using a bowtie shaped resonator structure.
M. Z. Ur Rehman +4 more
doaj
High Selectivity Dual-Band Bandpass Filter with Tunable Lower Passband
International Journal of Antennas and Propagation, 2015 This paper presents a novel method to design dual-band bandpass filters with tunable lower passband and fixed upper passband. It utilizes a trimode resonator with three controllable resonant modes. Discriminating coupling is used to suppress the unwanted
Wei-Qiang Pan +3 more
doaj +1 more source
Continuously Tunable Microwave Photonic Notch Filter With a Complex Coefficient
IEEE Photonics Journal, 2011 This paper presents a continuously tunable microwave photonic notch filter with a complex coefficient. The complex coefficient is generated using a radio-frequency (RF) phase shifter that consists of a dual-parallel Mach-Zehnder modulator (DPMZM) and a ...
Wei Li, Ning Hua Zhu, Li Xian Wang
doaj +1 more source
High-Q High Power Tunable Filters Manufactured With Injection Molding Technology
IEEE Access, 2022 This paper presents the first demonstration of injection molding technology to enable large-scale mass manufacturing of high-performance tunable microwave filters to meet the growing needs of 5G small cell stations.
Michael D. Sinanis +4 more
doaj +1 more source
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 +2 more
doaj +1 more source