Results 11 to 20 of about 137,045 (307)
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 +3 more sources
Tunable ring resonator filter for OFDM Transmission systems [PDF]
, 1995 A novel tunable filter is theoretically demonstrated. It is based on a ring resonator with an amplifier and a noise filter in the loop. This optoelectronic device has potential as a high-sensitivity receiver and as a tunable demultiplexer in OFDM ...
Hernández Gil, F. +2 more
core +3 more sources
Narrow-band optical filter through phase conjugation by nondegenerate four-wave mixing in sodium vapor [PDF]
, 1981 An ultrahigh-Q tunable optical filter with a FWHM bandwidth of 41 MHz is demonstrated. The filtering is produced by nondegenerate phase conjugation through four-wave mixing in atomic-sodium vapor.
Gluck, Natalie S. +2 more
core +1 more source
Tunable Optical Filters Using Compound Ring Resonators for DWDM [PDF]
, 2003 The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient of a directional coupler. The loop mirror is implemented using a Sagnac configuration to have the same optical path between the ...
Corredera, Pedro +3 more
core +3 more sources
RF transversal filter using an AOTF [PDF]
, 2004 An acoustooptic tunable filter (AOTF) is employed in an optical system to obtain an independently tunable and reconfigurable radio-frequency transversal filter.
Mansoori, S, Mitchell, A
core +1 more source
IEEE Photonics Journal, 2017 We present a new tunable all-fiber compact multimode fiber (MMF)-based filter and its applications in fiber sensors. Using the matrix optics approach, we theoretically analyze the transmission characteristics of the tunable filter.
Li Wei +3 more
doaj +1 more source
Tunable active chirped-corrugation waveguide filters [PDF]
, 1989 A novel tunable semiconductor waveguide reflection filter is proposed and analyzed. The filter is based on spatially selective gain pumping of a chirped-corrugation waveguide.
Mittelstein, Michael +2 more
core +1 more source
IEEE Photonics Journal, 2015 The wavelength-tunable filter is a key device for creating colorless, directionless, and contentionless reconfigurable optical add-drop multiplexers.
Shoichi Takashina +4 more
doaj +1 more source
TTF: a flexible approach to narrowband imaging [PDF]
, 1997 The Taurus Tunable Filter (TTF) is a tunable narrowband interference filter covering wavelengths from 6300 A to the sensitivity drop-off of conventional CCDs (9600 A), although a blue `arm' (3700-6500 A) is to be added by the end of 1997.
Bland-Hawthorn, J., Jones, D. H.
core +3 more sources
Concept for Continuously Tunable Output Filters for Digital Transmitter Architectures
IEEE Access, 2019 This paper presents a novel output filter approach for continuously frequency-tunable digital power amplifiers, suitable for future seamless and band-less applications in 5G, e.g. for cognitive radios (CR). The presented tunable output filter is based on
Christian Schuster +8 more
doaj +1 more source