ISBN: 9780792282280 - who came first? (direct mail edition): new clues to prehistoric americans (5 Ergebnisse)

- Hardcover
Anbieter: World of Books (was SecondSale), Montgomery, IL, USAWorld of Books (was SecondSale)
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Befriedigend
EUR 4,82
Versand gratisVersand innerhalb von USAAnzahl: 1 verfügbar
Hardback. Zustand: Good. A an lise de um conjunto de dipolos log-peri dicos (LPDA) utilizando o HFSS envolve uma avalia o abrangente do seu desempenho eletromagn tico numa vasta gama de frequ ncias. A an lise come a com a simula o do modelo LPDA, onde o HFSS calcula os par metros S para determinar a imped ncia de entrada e os coeficientes de reflex o, garantindo a correspond ncia adequada da imped ncia nas frequ ncias de funcionamento. O software tamb m gera os padr es de radia o em diferentes frequ ncias, fornecendo informa es sobre a directividade, o ganho e a largura do feixe da antena. Ao examinar estes padr es, poss vel avaliar o desempenho da LPDA em termos das suas propriedades direccionais e cobertura. Al m disso, o HFSS permite a visualiza o da distribui o de corrente nos elementos do dipolo, destacando reas de radia o m xima e potenciais pontos de acesso. Atrav s destas an lises, poss vel identificar e resolver potenciais problemas, tais como resson ncias ou incompatibilidades. Os resultados do HFSS permitem uma compreens o detalhada do comportamento do LPDA, facilitando melhorias iterativas no projeto para melhorar o desempenho, a largura de banda e a efici ncia. Esta an lise abrangente garante que o LPDA cumpre as especifica es pretendidas.…

- Hardcover
Anbieter: Better World Books, Mishawaka, IN, USABetter World Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Befriedigend
EUR 6,57
Versand gratisVersand innerhalb von USAAnzahl: 1 verfügbar
Zustand: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

- Hardcover
Anbieter: Better World Books, Mishawaka, IN, USABetter World Books
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Gut
EUR 6,57
Versand gratisVersand innerhalb von USAAnzahl: 1 verfügbar
Zustand: Very Good. Former library copy. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

- Hardcover
Anbieter: ThriftBooks-Atlanta, AUSTELL, GA, USAThriftBooks-Atlanta
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Befriedigend
EUR 7,47
Versand gratisVersand innerhalb von USAAnzahl: 1 verfügbar
Hardcover. Zustand: Good. No Jacket. Former library book; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

- Softcover
Anbieter: WorldofBooks, Goring-By-Sea, WS, Vereinigtes KönigreichWorldofBooks
Verkäufer/-in kontaktierenVerkäufer/-in mit 5 SternenZustand: Gebraucht - Gut
EUR 29,52
EUR 6,69 VersandVersand von Vereinigtes Königreich nach USAAnzahl: 1 verfügbar
Paperback. Zustand: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.