Who Came First? (Direct Mail Edition): New Clues to Prehistoric Americans
Language: English
Published by National Geographic Kids, 2003
- Hardcover
- Used
Seller: World of Books (was SecondSale), Montgomery, IL, U.S.A.World of Books (was SecondSale)
AbeBooks seller since December 20, 2007
Condition: Used - Good
£ 4.04
Quantity: 1 available
Add to basketItem description from seller
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.…
Seller Inventory # 00097934336
- Title
- Who Came First? (Direct Mail Edition): New Clues to Prehistoric Americans
- Author
- Patricia Lauber
- Publisher
- National Geographic Kids
- Publication year
- 2003
- Condition
- Good
- Binding
- Hardback
- Language
- English
- ISBN 10
- 0792282280
- ISBN 13
- 9780792282280
"Synopsis" may belong to another edition of this title.
World of Books (was SecondSale)
Montgomery, IL, U.S.A.
AbeBooks seller since December 20, 2007
Shipping rates within U.S.A.
| Item | 4 to 12 business days | 3 to 6 business days |
|---|---|---|
| First item | £ 0.00 | £ 8.19 |
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Store description
Founded in 2002, World of Books is a leading online destination for buying and selling both preloved and new books, committed to making sustainable reading accessible to all. With a mission to help people read more and waste less, World of Books offers a huge range of affordable, high-quality books — giving both new and preloved titles a second life. The company also operates World of Books – Sell Your Books, an easy-to-use platform that allows customers to trade in unwanted books for cash, helping to keep books in circulation while promoting sustainability. As a Certified B Corp, World of Books is driven by a vision to become the world’s largest and most sustainable dedicated online bookstore. The company measures its success through the positive environmental impact it creates, the value it provides to customers, and its ability to operate profitably while supporting its sustainable mission …
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SBYB, Inc.
900 Knell Rd
Montgomery, IL U.S.A. 60538
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