Outline - 正修科技大學
... Line wavelength is reduced considerably (typically 1/3) from its free space value, because of the substrate fields. Hence, distributed component dimensions are relatively small. The structure is quite rugged and can withstand moderately high voltages and power levels. Although microstrip has not ...
... Line wavelength is reduced considerably (typically 1/3) from its free space value, because of the substrate fields. Hence, distributed component dimensions are relatively small. The structure is quite rugged and can withstand moderately high voltages and power levels. Although microstrip has not ...
Compact 224-Gbit/s Modulator Modules for Digital Coherent Optical
... capacitance between S-G electrodes(5). The width and height of the waveguides were 1.6 µm and 3 µm respectively. The core material of the waveguides was undoped AlGaInAs multi quantum wells (MQWs), which led to higher modulation efficiency that was a large index change with low optical loss at a hig ...
... capacitance between S-G electrodes(5). The width and height of the waveguides were 1.6 µm and 3 µm respectively. The core material of the waveguides was undoped AlGaInAs multi quantum wells (MQWs), which led to higher modulation efficiency that was a large index change with low optical loss at a hig ...
Photonics Systems - Introduction Sergiusz Patela, Dr Sc
... Light = electromagnetic wave of frequency 3x1014Hz, (almost million GHz). • Total internal reflection effect and extremely low glass attenuation Fibers can guide light at long distances without regeneration • Wave nature of light and fiber modes Many waveguide parameters and construction details can ...
... Light = electromagnetic wave of frequency 3x1014Hz, (almost million GHz). • Total internal reflection effect and extremely low glass attenuation Fibers can guide light at long distances without regeneration • Wave nature of light and fiber modes Many waveguide parameters and construction details can ...
Solar Wind-Magnetosphere-Ionosphere Coupling: Dynamics in
... • When including the inductive and dynamic effects – The magnetosphere-ionosphere is coupled via waves (not necessarily sinesoidal) – Dispersion relation and attenuation rate are derived for the collisional Alfven mode – 1-D self-consistent simulations with continuity, momentum, energy conservation, ...
... • When including the inductive and dynamic effects – The magnetosphere-ionosphere is coupled via waves (not necessarily sinesoidal) – Dispersion relation and attenuation rate are derived for the collisional Alfven mode – 1-D self-consistent simulations with continuity, momentum, energy conservation, ...
Dielectric Properties at High Frequencies of Douglas Fir 20
... larger value of power factor. 5. Grain direction. Vertical grain wood has a grain direction perpendicular to the electrode surfaces and parallel to the electric field. Flat grain wood has a grain direction parallel to the electrode surfaces and perpendicular to the electric field. Data were obtained ...
... larger value of power factor. 5. Grain direction. Vertical grain wood has a grain direction perpendicular to the electrode surfaces and parallel to the electric field. Flat grain wood has a grain direction parallel to the electrode surfaces and perpendicular to the electric field. Data were obtained ...
Types of Wound Film Capacitors
... than that of a discrete foil. Ancillary vacuum technologies exist that allow designed variations of the metalized surface for specific applications. For example, a heavy region is possible where the termination will be attached, thus allowing for higher current capabilities. It is also possible to p ...
... than that of a discrete foil. Ancillary vacuum technologies exist that allow designed variations of the metalized surface for specific applications. For example, a heavy region is possible where the termination will be attached, thus allowing for higher current capabilities. It is also possible to p ...
Theory of Electromagnetic Fields
... In the previous lecture, we saw that: • Maxwell’s equations have wave-like solutions for the electric and magnetic fields in free space. • Electromagnetic waves can be generated by oscillating electric charges. • Expressions for the energy density and energy flow in an electromagnetic field may be o ...
... In the previous lecture, we saw that: • Maxwell’s equations have wave-like solutions for the electric and magnetic fields in free space. • Electromagnetic waves can be generated by oscillating electric charges. • Expressions for the energy density and energy flow in an electromagnetic field may be o ...
Measurement of Dielectric Parameters of XLPE Cables
... create undesirable conductivity. Dielectric polarization is a phenomenon that occurs under the effect of electric field and causes the movement of free charge carriers [2], [3]. After connecting voltage to dielectric material current starts flow through dielectric. In case of ideal dielectric the cu ...
... create undesirable conductivity. Dielectric polarization is a phenomenon that occurs under the effect of electric field and causes the movement of free charge carriers [2], [3]. After connecting voltage to dielectric material current starts flow through dielectric. In case of ideal dielectric the cu ...
A Guide to the Design of Laminate PCBs at Microwave
... typically have a dielectric constant (r) of around 3.5. Microstrip and Grounded Coplanar Waveguide (GCPW) transmission lines are dispersive at high frequencies, which means that radiation increases and other propagation modes (e.g. substrate modes and transverse resonance modes) can start to have a ...
... typically have a dielectric constant (r) of around 3.5. Microstrip and Grounded Coplanar Waveguide (GCPW) transmission lines are dispersive at high frequencies, which means that radiation increases and other propagation modes (e.g. substrate modes and transverse resonance modes) can start to have a ...
mm-Wave Phased Arrays in Silicon with Integrated Antennas E-mail:
... level of integrations at mm-wave frequencies by providing high fT transistors. Recently, several V- and W-band transceivers and even single-chip phased array systems have been published in the silicon based technologies [1][2]. In most of these works, experimental results prove the accuracy of the l ...
... level of integrations at mm-wave frequencies by providing high fT transistors. Recently, several V- and W-band transceivers and even single-chip phased array systems have been published in the silicon based technologies [1][2]. In most of these works, experimental results prove the accuracy of the l ...
Push-Push Voltage Controlled Dielectric Resonator Oscillator Using
... A dielectric resonator (DR) has many advantages in terms of size and quality factor (Q-factor) over stripline resonators and waveguide cavities. Further, a dielectric resonator oscillator (DRO) is a cost-effective solution for achieving a highly stable and low-phase noise source in the microwave and ...
... A dielectric resonator (DR) has many advantages in terms of size and quality factor (Q-factor) over stripline resonators and waveguide cavities. Further, a dielectric resonator oscillator (DRO) is a cost-effective solution for achieving a highly stable and low-phase noise source in the microwave and ...
Universal frequency-dependent conduction of
... where for i 6= j we define σ̃ij ≡ σij , but the diagonal elements of σ̃ij also include the terms arising from the currents to the leads, so that σ̃ii ≡ σii − σi,L − σi,R . This linear equation can be solved for given chemical potentials of the leads, and describes the internal distribution of local ...
... where for i 6= j we define σ̃ij ≡ σij , but the diagonal elements of σ̃ij also include the terms arising from the currents to the leads, so that σ̃ii ≡ σii − σi,L − σi,R . This linear equation can be solved for given chemical potentials of the leads, and describes the internal distribution of local ...
2 Analysis of rectangular microstrip patch antenna by cavity model
... microstrip patch antennas or bandwidth enhancement can be achieved by several efficient approaches [2]. In this paper, coaxial feed techniques are applied to the rectangular microstrip patch antenna. Because coaxial feed is a widely used one. The inner conductor of coaxial cable is connected to the ...
... microstrip patch antennas or bandwidth enhancement can be achieved by several efficient approaches [2]. In this paper, coaxial feed techniques are applied to the rectangular microstrip patch antenna. Because coaxial feed is a widely used one. The inner conductor of coaxial cable is connected to the ...
Resistors in Microwave Applications
... 1. For most of the practical applications, the resulting deviation of the impedance Z up to |Z| / R = 1,2 may be disregarded. For higher deviations, the resistor is not acceptable or the occurring reactances have to be regarded into the circuit. 2. The working frequency has to be far below the reson ...
... 1. For most of the practical applications, the resulting deviation of the impedance Z up to |Z| / R = 1,2 may be disregarded. For higher deviations, the resistor is not acceptable or the occurring reactances have to be regarded into the circuit. 2. The working frequency has to be far below the reson ...
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.