Results 11 to 20 of about 19,714 (168)
RF MEMS Based Tunable Bowtie Shaped Substrate Integrated Waveguide Filter [PDF]
, 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.
Baharudin, Z. +4 more
core +1 more source
High-gain erbium-doped fiber amplifier incorporating a double-pass amplification technique as a preamplifier [PDF]
, 2008 We present a high-gain erbium-doped fiber amplifier to be utilized as a preamplifier. A double-pass amplification technique is used in the first-stage amplifier together with a tunable bandpass filter.
Abdullah, Mohamad Khazani +2 more
core +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
Tunable n-path notch filters for blocker suppression: modeling and verification [PDF]
, 2013 N-path switched-RC circuits can realize filters with very high linearity and compression point while they are tunable by a clock frequency. In this paper, both differential and single-ended N-path notch filters are modeled and analyzed.
Ghaffari, A. +2 more
core +2 more sources
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
A CMOS Q-Enhancement Bandpass-Filter For Use In Paging Receivers [PDF]
, 1998 Paging receivers often have to work in a dense\ud signal environment. This poses high demands on the preselection\ud filter. One of the most difficult aspects is the large\ud image rejection demand, which only can be satisfied by use\ud of a narrow-band ...
Eikenbroek, J.W.Th. +3 more
core +8 more sources
Small Size Dual-band Bandpass Filters with Multiconductor Transmission Lines and Shunt Open Stubs [PDF]
, 2018 A dual-band bandpass filter consisting of multiconductor transmission lines (MTL) and shunt stubs has been designed. The used topology, based on the interconnection of two identical MTL and a shunt open stub, has a frequency response that can be modelled
Márquez Segura, Enrique +2 more
core +1 more source
Magnetically tunable bandpas filter of teraherz radiation
Izvestiya vysshikh uchebnykh zavedenii. Fizika, 2022 A magnetically tunable bandpass filter of terahertz radiation is created and investigated. The filter is a cell with a magnetic fluid and a system of inductance coils made in the form of Helmholtz rings. The magnetic fluid consists of automotive synthetic engine oil and 5BDSR alloy microparticles with a mixed amorphouscrystalline structure. When a cell
Kochnev, Zahar S. +2 more
openaire +2 more sources
Electronically tunable bandpass filter
, 1990 An electronically tunable bandpass filter is presented. It is a combline filter realized in microstrip form. The filter is made tunable by using the variable capacitance of a GaAs fet (or of a varactor). With the use of this technique it is possible to achieve relative bandwidth from 8% to 30%, a tuning bandwidth 'up to 50% and a center frequency up to
Bianchi, G., Pinto, G.
openaire +2 more sources
Tunable active bandpass filter design
Electronics Letters, 2011 A tunable active bandpass filter that uses control voltage to select passband frequency response is presented. The proposed topology basically consists of a cascoded current-injection active inductor so as to tune passband frequency response from 2.35 to 3.66 GHz and extend the available bandwidth.
S.-W. Chen, J.-W. Wu, J.-D. Wu, J.-S. Li
openaire +1 more source