CFA per alte frequenze

[climbjack]

Ciao a tutti,
qualcuno sa consigliarmi un CFA per VHF?

Grazie mille
Jack

[giorgio25760]

Da wiki :

* Cfa is one of two symbols for the Humid subtropical climate under the Köppen climate classification system
* Color filter array, a mosaic of tiny color filters placed over an image sensor to capture color information
* CompactFlash Association, a mass storage device format used in portable electronic devices
* Complete Freund's Adjuvant, an immunopotentiator composed of inactivated and dried mycobacteria
* Component Failure Analysis, a method used to evaluate an electronic circuit's operation or function during adverse component conditions, often used in FMEA's.
* Confirmatory factor analysis, statistical method used to explain variability among observed random variables
* Continuous flow analysis, an automated analyzer using a special flow technique
* Control flow analysis, in computer science
* Crossed-field amplifier, a specialized vacuum tube used as a microwave amplifier
* Crossed field antenna, a type of antenna for long and mediumwave broadcasting
* Cryptogenic fibrosing alveolitis, an archaic term for Idiopathic pulmonary fibrosis
* Current-feedback operational amplifier, a type of operational amplifier
* Harvard-Smithsonian Center for Astrophysics, an American astronomy research and education institution

[edit] Economics and business

* CFA franc, a currency used by fourteen African countries
* Chartered Financial Analyst, an international investment professional designation
o CFA Institute, formerly known as the Association for Investment Management and Research (AIMR)
* Chick-fil-A, an American fast-food restaurant chain
* Compagnie Française d'Aviation, a defunct French aircraft manufacturer
* Conditional fee agreement, a legal agreement also known as "no win no fee"
* Consumer Federation of America, an American organization researching into consumer interest
* Consumers' Federation of Australia, Australia's umbrella consumer advocacy group
* Corporate Finance Associates, an American investment banking firm

[edit] Government and politics

* Compact of Free Association
* Cape Field Artillery, an artillery regiment of the South African Army
* Civitates Foederatae Americae, Latin for United States of America
* Commission of Fine Arts, an advisory agency of the United States Government
* Country Fire Authority, an integrated career staff and volunteer fire service in Victoria, Australia
* Court of Final Appeal (Hong Kong), the court with the final adjudication power on the laws of Hong Kong
* Court of Final Appeal (Macau), the court with the final adjudication power on laws of Macau
* Ceasefire agreement

[edit] Sport

* Championnat de France Amateurs, a French football competition
* Chinese Football Association, the governing body of football in the People's Republic of China
* County Football Association, governing bodies for local football in England
* Cyprus Football Association, the governing body of football in Cyprus

[edit] Other

* California Faculty Association, the union representing the 24,000 faculty, librarians, counselors, and coaches in the 23 campus California State University (CSU) system
* Call For Action, telephone help-lines of radio stations in the United States
* Campus Freethought Alliance, an organization encouraging evidence-based inquiry into paranormal science
* Carnegie Mellon College of Fine Arts, a college of Carnegie Mellon University
* Cat Fanciers' Association, the world's largest registry of pedigreed cats
* Chemins de Fer Armoricains‎, a former railway in Brittany, France
* Cause For Alarm, American hardcore band
* Continuous flight augering, a drilling method

Se magari cerchi di essere più chiaro, qualcuno ti risponderà !


Ciao
Giorgio

[IsidoroKZ]

E soprattutto specificare per cosa lo vuoi usare, ad esempio il livello di segnale per valutare il rumore, la dinamica del segnale per l'intermodulazione...

[climbjack]

per cfa intendo current feedback amplifier, e dovrei utilizzarlo per filtrare un segnale.

Grazie mille

[BrunoValente]

In VHF non si utilizzano operazionali per realizzare filtri, in genere si realizzano filtri passivi con induttanze e condensatori o filtri ceramici...dipende da cosa devi fare.

[IsidoroKZ]

Se non sai scegliere o trovare un componente per una funzione complicata che ti serve per la soluzione di un problema, probabilmente e` perche' la soluzione che hai in mente e` "sbagliata".

Come al solito Bruno ha ragione, si usano filtri passivi per un mare di ragioni, filtri sia a parametri concentrati che distribuiti, ma se non racconti i dettagli di quale problema vuoi risolvere (che segnale, che filtraggio), e non la tua soluzione (filtro attivo), diventa impossibile rispondere.

Capisco anche che essendo un progetto segretissimo, se ce lo dicessi poi saresti costretto ad ucciderci , e a questo punto mi defilo

SKCL