Если вы передумали, отпишитесь, пожалуйста, от приема по телефону 435-55-55 В стоимость консультации входит: Сбор анамнеза, постановка предварительного диагноза и назначение обследования.16. Kinovea is supported by users via Patreon. Этот процесс сопровождается развитием клапанной wifh - появлением обратного тока крови в венах (рефлюкса) под действием силы тяжести. Вы сильно удивитесь, узнав как по латыни называется грыжа.
The antenna consists of two symmetrically placed inverted L-shaped slots.
By using a T-type bias device to change the bias states of two PIN diodes which connect the two slots with the feed port respectively, right-hand circular polarization RHCP and left-hand circular polarization LHCP can be realized accordingly. By using floating ground and reflector board to enhance the front to back ratio of the antenna, 6.
A reconfigurable slot antenna with switchable polarization - IEEE Journals & Magazine
Author links open overlay panel L. Yang a L. They are particularly useful sot situations where several communications systems converge because the multiple antennas required can be replaced by a single reconfigurable antenna. Frequency reconfiguration is generally achieved by physical or electrical modifications to the antenna dimensions using RF-switches,  impedance loading  or tunable materials.
Radiation pattern reconfigurability is based on the intentional modification of the spherical distribution of the radiation pattern.
Polarization reconfigurable slot antenna for GHz wireless applications - ScienceDirect
Beam steering is the most extended application and consists of steering the direction of maximum radiation to maximize the antenna gain in a link with mobile devices. Polarization reconfigurable wirh are capable of switching between different polarization modes.But in “Reconfigurable Patch Antenna Using Switchable L-shaped Slots for circuit Polarization Diversity” there is no need of power divider and also multiple feeds. Polarization Diversity can be achieved with single feed itself. This is the main advantage of the present antenna. As the antenna is . A polarization reconfigurable slot antenna is proposed in this paper. The antenna consists of a microstrip line-to-slotline transition structure, two radiation slots and a switchable feeding network. The feeding network is a gradually changed ring slot with six switching diodes on it. A novel reconfigurable slot antenna architecture allowing polarization switching is presented. The antenna shape consists of a slot-ring with perturbations which are switched on and off using pin.
The capability of switching between horizontal, vertical and circular polarizations can be used to reduce polarization mismatch losses in portable devices. Polarization reconfigurability can be provided by changing the balance between the different modes of a multimode structure.
Compound reconfiguration is slo capability of simultaneously tuning several antenna parameters, for instance frequency and radiation pattern. The most common application of compound reconfiguration is the combination of frequency agility and beam-scanning to provide improved spectral efficiencies. Compound reconfigurability is achieved by combining in the same structure different single-parameter reconfiguration techniques   or by reshaping dynamically a pixel surface.
Reconfigurable antenna - Wikipedia
From Wikipedia, the free encyclopedia. Common types. Safety and regulation. Mobile phone radiation and health Wireless electronic devices and health International Telecommunication Union Radio Regulations. Beam steering Beam tilt Beamforming Small cell. Reconfiguration Spread spectrum.
A Polarization Reconfigurable Slot Antenna with a Novel Switchable Feeding Network - NASA/ADS
IEEE Trans. Antennas Propag. Bibcode : ITAP