Matches in SemOpenAlex for { <https://semopenalex.org/work/W1562175536> ?p ?o ?g. }
Showing items 1 to 92 of
92
with 100 items per page.
- W1562175536 abstract "Since the discovery of radio frequency (RF) transmission, antenna design has been an integral part of virtually every communication and radar application. In its most common form, an antenna represents a conducting metal surface that is sized to emit radiation at one or more selected frequencies. Antennas must be efficient so the maximum amount of signal strength is expended in the propogated wave and not wasted in antenna reflection. The modern requirements to antenna include compactness and conformality, rapid reconfigurability for directionality and frequency agility and should also allow low absolute or out-of-band radar cross-section and facilitate low probability of intercept communications. The need for an antenna that is invisible (thus not detectable while not in operation) has, already in the 1980's, sparked work on the feasibility of using an atmospheric discharge plasma1 as an RF antenna. Moreover, data communications can be made more secure if the antenna only exists during the transmission of each data packet. Such antennas use plasma formations as the receiver or transmitter elements. The characteristics of the plasma formations are determined by purpose of the specific antenna. Plasmas have two important properties that are relevant for interaction with electromagnetic waves: • For frequencies above the plasma frequency, a semi-infinite plasma transmits EM waves with a wavelength, l /e r where l is the free space wavelength. Thus plasmas can in principle be used for electronic tuning or control of a radiation pattern by varying the plasma density. For the densities typical of discharge tubes, this phenomenon appears especially useful at microwave frequencies. • For frequencies below the plasma frequency, however, the dielectric constant is e r < 0, the plasma behaves as a metal, free space EM waves cannot penetrate, and are reflected. Radio communications via the ionosphere rely on this effect. Plasma technology can be utilized to create secure WiFi data transmission capability for use in different applications up to 100 GHz [33]. WiFi has enabled a wide array of inexpensive communication devices that are utilized in desk-top computing, networking, PDA’s etc. Its" @default.
- W1562175536 created "2016-06-24" @default.
- W1562175536 creator A5037024898 @default.
- W1562175536 creator A5056524116 @default.
- W1562175536 date "2010-03-01" @default.
- W1562175536 modified "2023-09-26" @default.
- W1562175536 title "Explosive Pulsed Plasma Antennas for Information Protection" @default.
- W1562175536 cites W1481047984 @default.
- W1562175536 cites W1523789922 @default.
- W1562175536 cites W2025961845 @default.
- W1562175536 cites W2040476217 @default.
- W1562175536 cites W2058643865 @default.
- W1562175536 cites W2082656584 @default.
- W1562175536 cites W2109034149 @default.
- W1562175536 cites W2153710073 @default.
- W1562175536 cites W2167717005 @default.
- W1562175536 cites W2288724838 @default.
- W1562175536 cites W2542714125 @default.
- W1562175536 cites W2788790884 @default.
- W1562175536 cites W3126670291 @default.
- W1562175536 cites W3136962 @default.
- W1562175536 cites W2247511605 @default.
- W1562175536 cites W3021205232 @default.
- W1562175536 doi "https://doi.org/10.5772/8755" @default.
- W1562175536 hasPublicationYear "2010" @default.
- W1562175536 type Work @default.
- W1562175536 sameAs 1562175536 @default.
- W1562175536 citedByCount "1" @default.
- W1562175536 crossrefType "book-chapter" @default.
- W1562175536 hasAuthorship W1562175536A5037024898 @default.
- W1562175536 hasAuthorship W1562175536A5056524116 @default.
- W1562175536 hasBestOaLocation W15621755361 @default.
- W1562175536 hasConcept C109026120 @default.
- W1562175536 hasConcept C119599485 @default.
- W1562175536 hasConcept C120665830 @default.
- W1562175536 hasConcept C121332964 @default.
- W1562175536 hasConcept C127162648 @default.
- W1562175536 hasConcept C127413603 @default.
- W1562175536 hasConcept C149773537 @default.
- W1562175536 hasConcept C151764478 @default.
- W1562175536 hasConcept C21822782 @default.
- W1562175536 hasConcept C24890656 @default.
- W1562175536 hasConcept C41008148 @default.
- W1562175536 hasConcept C47798520 @default.
- W1562175536 hasConcept C554190296 @default.
- W1562175536 hasConcept C64671776 @default.
- W1562175536 hasConcept C76155785 @default.
- W1562175536 hasConcept C96513508 @default.
- W1562175536 hasConceptScore W1562175536C109026120 @default.
- W1562175536 hasConceptScore W1562175536C119599485 @default.
- W1562175536 hasConceptScore W1562175536C120665830 @default.
- W1562175536 hasConceptScore W1562175536C121332964 @default.
- W1562175536 hasConceptScore W1562175536C127162648 @default.
- W1562175536 hasConceptScore W1562175536C127413603 @default.
- W1562175536 hasConceptScore W1562175536C149773537 @default.
- W1562175536 hasConceptScore W1562175536C151764478 @default.
- W1562175536 hasConceptScore W1562175536C21822782 @default.
- W1562175536 hasConceptScore W1562175536C24890656 @default.
- W1562175536 hasConceptScore W1562175536C41008148 @default.
- W1562175536 hasConceptScore W1562175536C47798520 @default.
- W1562175536 hasConceptScore W1562175536C554190296 @default.
- W1562175536 hasConceptScore W1562175536C64671776 @default.
- W1562175536 hasConceptScore W1562175536C76155785 @default.
- W1562175536 hasConceptScore W1562175536C96513508 @default.
- W1562175536 hasLocation W15621755361 @default.
- W1562175536 hasLocation W15621755362 @default.
- W1562175536 hasOpenAccess W1562175536 @default.
- W1562175536 hasPrimaryLocation W15621755361 @default.
- W1562175536 hasRelatedWork W1542358553 @default.
- W1562175536 hasRelatedWork W2004745686 @default.
- W1562175536 hasRelatedWork W2010989249 @default.
- W1562175536 hasRelatedWork W2054501108 @default.
- W1562175536 hasRelatedWork W2194385810 @default.
- W1562175536 hasRelatedWork W2479497643 @default.
- W1562175536 hasRelatedWork W2766554889 @default.
- W1562175536 hasRelatedWork W2895487166 @default.
- W1562175536 hasRelatedWork W3011438093 @default.
- W1562175536 hasRelatedWork W3207072728 @default.
- W1562175536 hasRelatedWork W95882785 @default.
- W1562175536 hasRelatedWork W1643307227 @default.
- W1562175536 hasRelatedWork W2395403790 @default.
- W1562175536 hasRelatedWork W2834985812 @default.
- W1562175536 hasRelatedWork W2855065020 @default.
- W1562175536 hasRelatedWork W2863318902 @default.
- W1562175536 hasRelatedWork W2870155356 @default.
- W1562175536 hasRelatedWork W2873871549 @default.
- W1562175536 hasRelatedWork W2961258794 @default.
- W1562175536 hasRelatedWork W3144275117 @default.
- W1562175536 isParatext "false" @default.
- W1562175536 isRetracted "false" @default.
- W1562175536 magId "1562175536" @default.
- W1562175536 workType "book-chapter" @default.