Based on the theory of short circuit, it concerns on the 1/4 wavelength slot antenna and focuses on how to use the techniques of passive dipoles and narrow slot loading
to increase the impedance bandwidth of the opening slot antenna and how the directional radiation ability of antenna can be increased.
The BDX5500 also supports 3D playback, has touch controls and is slot loading
so it can be placed vertically.
In order to determine the equivalent [TM.sub.mn] propagation modes introduced by the self-complementary shaped multiple-L slot loading
regarding the operational frequency bands demonstrated in Figure 3, Equation (1) given below has been used .
To overcome the problem, according to [10-13] dielectric lens loading is introduced in this paper to reduce the phase error at the aperture, which helps improve antennas' radiation patterns in the high frequency band and increase radiation gain in the whole frequency band; meanwhile, a novel ridge structure with slot loading on ridges is adopted in this paper and the simulated and measured results show that the impedance matching characteristic of the antenna in the lower frequency band is improved greatly due to the addition of the slot loading.
DRGH design is divided into 4 parts: characteristic impedance calculation of ridged waveguides by transverse resonant method combined with the calculation method in [14-16], the design of the reflection cavitydesign of the ridged structure extending form the waveguide port to the horn apertureand structure optimization which includes analysis of phase error distribution at the antenna aperture, design of dielectric lens according to the structure, analysis of ridged waveguide and design of slot loading on ridges for lowering the cutoff frequency of the dominant mode ([TE.sub.10]).
The the left side features a slot loading
DVD drive with an eject button and a card reader slot.
This "performance factory" docking station delivers the power of an AMD Radeonacents HD 6650M graphics card with 1GB VRAM, slot loading
optical drive, three USB ports (1 x 3.0 and 2 x 2.0), HDMIA[R] and VGA ports.
It has a slot loading
CD/DVD ROM (instead of tray loading).
Advances in broadband microstrip antennas with additional microstrip resonators, an air or foam substrate, slot loading
, or integrated reactive loading, for example, are presented and discussed in detail.
Hold down Option when starting up from a slot loading
iMac, iBook or G4 to see a new feature for selecting the drive your Mac will boot from.
has released its BDR-XS05 slot loading
BD/DVD/CD burner, which can be used in a horizontal or vertical (standing up) position to save on desk space.
Meanwhile a lateral L-shaped slot loading
is employed in the ground-plane to obtain wider resonant band.