MFJ-259B HF/VHF SWR Analyzer
... Broadband detectors are sensitive to out-of-band external voltages, and solutions to most out-of-band interference are not simple. Common low-pass or band-pass filters behave like transmission lines of varying impedances on different frequencies. Low-pass or high-pass filters change impedance and SW ...
... Broadband detectors are sensitive to out-of-band external voltages, and solutions to most out-of-band interference are not simple. Common low-pass or band-pass filters behave like transmission lines of varying impedances on different frequencies. Low-pass or high-pass filters change impedance and SW ...
On Universal Modeling of the Bulk Acoustic Wave
... The most rigorous description of the characteristics of arbitrary BAW devices may be achieved by using the known three dimensional finite element method (e.g., Giraud et al, 2007). However, this approach demands enormous computational resources and a long computation time during each design of BAW r ...
... The most rigorous description of the characteristics of arbitrary BAW devices may be achieved by using the known three dimensional finite element method (e.g., Giraud et al, 2007). However, this approach demands enormous computational resources and a long computation time during each design of BAW r ...
Gerhard Mercator Universität Gesamthochschule Duisburg
... been proposed. Applications are transmission of traffic information, multimedia, or Internet access. These systems operate usually at an optical wavelength of 1.55µm at frequencies up to 60GHz. Since the photodetector should generate as much electrical power as possible, the travelling-wave photodet ...
... been proposed. Applications are transmission of traffic information, multimedia, or Internet access. These systems operate usually at an optical wavelength of 1.55µm at frequencies up to 60GHz. Since the photodetector should generate as much electrical power as possible, the travelling-wave photodet ...
File
... dielectric breakdown and makes capacitors more prone to leakage currents. Generally, series capacitor networks are eschewed so as to avoid such risks. Capacitors with plastic dielectrics (e.g. polycarbonate and polypropylene capacitors) on the other hand, generally have a much higher tolerance and o ...
... dielectric breakdown and makes capacitors more prone to leakage currents. Generally, series capacitor networks are eschewed so as to avoid such risks. Capacitors with plastic dielectrics (e.g. polycarbonate and polypropylene capacitors) on the other hand, generally have a much higher tolerance and o ...
`antenna`? - SNS Courseware
... to the operating frequency: if its length, L, is around half of the wavelength, it is an active dipole and within the active region; Otherwise it is in an inactive region and acts as a director or reflector as in Yagi-Uda antenna The driven element shifts with the frequency – this is why this ante ...
... to the operating frequency: if its length, L, is around half of the wavelength, it is an active dipole and within the active region; Otherwise it is in an inactive region and acts as a director or reflector as in Yagi-Uda antenna The driven element shifts with the frequency – this is why this ante ...
(PPT, 292KB)
... (DPLC) was developed for digital transmission via power lines. DPLC has the required quality of bit error rate characteristics and transmission ability such as transmitting information from monitored electric-supply stations and images. ...
... (DPLC) was developed for digital transmission via power lines. DPLC has the required quality of bit error rate characteristics and transmission ability such as transmitting information from monitored electric-supply stations and images. ...
Microscopic-macroscopic connection
... For a sufficiently small perturbation, the response of the system can be expanded into a Taylor series, with respect to the perturbation. We will consider only the first order (linear) response, proportional to the perturbation The linear coefficient linking the response to the perturbation is calle ...
... For a sufficiently small perturbation, the response of the system can be expanded into a Taylor series, with respect to the perturbation. We will consider only the first order (linear) response, proportional to the perturbation The linear coefficient linking the response to the perturbation is calle ...
... leaf-node of the optical H-tree, when properly biased generates a current pulse for every incident laser pulse. The photo detector initiates the clock recovery process by converting the incident optical clock to current pluses (photo current) which is then processed to generate electrical clock sign ...
Defense against electromagnetic pulse weapons
... degrees of success. These countermeasures include: • shielding; • wave guide beyond cutoff; • spark gap arrestor; • filter network; • metal oxide varistor; • fiber optic circuitry and; • high speed Zener diode.4 Shielding involves surrounding a circuit with metal or coating its enclosure with metall ...
... degrees of success. These countermeasures include: • shielding; • wave guide beyond cutoff; • spark gap arrestor; • filter network; • metal oxide varistor; • fiber optic circuitry and; • high speed Zener diode.4 Shielding involves surrounding a circuit with metal or coating its enclosure with metall ...
Wave transmission system
... said two wave guides over said coupling means thereof, said reflector means respectively serv may be varied by said relative slidable movement of said two wave guide parts, and wave deflect 60 ing to re?ect wave energy received over one of said two successive tubular conductors into said ing means r ...
... said two wave guides over said coupling means thereof, said reflector means respectively serv may be varied by said relative slidable movement of said two wave guide parts, and wave deflect 60 ing to re?ect wave energy received over one of said two successive tubular conductors into said ing means r ...
Radio Frequency Quadrupole (RFQ)
... injectors for linear accelerators which in turn formed the main injectors for the bigger circular machines or acted as sources of charged particle beams. ...
... injectors for linear accelerators which in turn formed the main injectors for the bigger circular machines or acted as sources of charged particle beams. ...
Waveguide (electromagnetism)
In electromagnetics and communications engineering, the term waveguide may refer to any linear structure that conveys electromagnetic waves between its endpoints. However, the original and most common meaning is a hollow metal pipe used to carry radio waves. This type of waveguide is used as a transmission line mostly at microwave frequencies, for such purposes as connecting microwave transmitters and receivers to their antennas, in equipment such as microwave ovens, radar sets, satellite communications, and microwave radio links.A dielectric waveguide employs a solid dielectric rod rather than a hollow pipe. An optical fibre is a dielectric guide designed to work at optical frequencies. Transmission lines such as microstrip, coplanar waveguide, stripline or coaxial cable may also be considered to be waveguides.The electromagnetic waves in a (metal-pipe) waveguide may be imagined as travelling down the guide in a zig-zag path, being repeatedly reflected between opposite walls of the guide. For the particular case of rectangular waveguide, it is possible to base an exact analysis on this view. Propagation in a dielectric waveguide may be viewed in the same way, with the waves confined to the dielectric by total internal reflection at its surface. Some structures, such as non-radiative dielectric waveguides and the Goubau line, use both metal walls and dielectric surfaces to confine the wave.