DB meaning in Electronics ?

Answer:

What is Dual Band mean?

In telecommunications, a multi-band device (including (2) dual-band, (3) tri-band, (4) quad-band and (5) penta-band devices) is a communication device (especially a mobile phone) that supports multiple radio frequency bands. All devices which have more than one channel use multiple frequencies; a band however is a group of frequencies containing many channels. Multiple bands in mobile devices support roaming between different regions where different standards are used for mobile telephone services. Where the bands are widely separated in frequency, parallel transmit and receive signal path circuits must be provided, which increases the cost, complexity and power demand of multi-band devices.

The term quad-band describes a device that supports four frequency bands: 850 and 1900 MHz, mostly used in the Americas (ITU region 2), and the 900 and 1800 MHz bands used elsewhere. Most GSM/UMTS phones support all four bands, while most CDMA2000/1xRTT phones (mostly North America and voice transmission only) do not, and so are considered only dual-band devices. A few phones support both of the domestic frequencies but only one foreign one for limited roaming, making them tri-band phones.

The term penta-band describes a device that supports a fifth frequency band, commonly the 1700/2100 MHz band in much of the world. The Advanced Wireless Services (AWS) 1700 MHz band is also seeing increased usage.

reference

Full Form	Category
Deed Book	Academic & Science
Data Breach	Academic & Science
Deformed Bar	Academic & Science
Declining Balance	Accounts and Finance
Direct Bill	Accounts and Finance
Development Bank	Banking
Design Berlin	Business
Delphi Board	Business
Dream Belleza	Business
Design & Build	Business
Development Business	Business
Designated Broker	Business
Defined Benefit (pension)	Business
Drop a Brick	Business
Debarked	Business
Dubnium	Chemistry
Double Bond	Chemistry
Deafening Bass	Community
Dark Band	Community
David Bowie	Community
Define Byte	Computer Assembly Language
Desktop Bundle	Computing
Dynamic Brain	Computing
Data Byte	Computing
DeadBones	Computing
Delray Beach	Country Specific
Design Based	Electronics
Dual Band	Electronics
Dbase Iv Configuration File	File Type
Database (dbvista - Paradox - Smartware - Xtreegold)	File Type
Double Bottom	General
Date Before	General
Dumb Bozo	General
David Brown	General
Digital Boy	General
Daily Bugle	General
Donna Boucher	General
Dumbarton Bridge	General
Diquark Breaking	General
Dangerous Bass	General
Dumb Bastard	General
Daniel Bernard	General
Dr Bob	General
Daisuke Bradford	General
Defensive Back	General
Davis Bacon	General
Distribution Based	General
Damage Bonus	General
Discrete Breather	General
Disbursement Begun	General
Den Buck	General
Dual Bias	General
Distance Based	General
Double Buffer	General
Define Bytes	General
Dune Buggy	General
Direct Burial	General
Dear Boyfriend	General
Daniel Berry	General
Dembskis Book	General
Dlci Bundle	General
David Bleine	General
Dalby Building	General
Drink Bleach	General
Dave Boonshoft	General
Diamond Bar	General
Distribution Board	General
Dark Brown	General
DatteBayo	General
Dragon Ball	General
Deeper Better	General
Database or Data Base	General
Definition by	General
Dalniy Bombardirovschik	General
Deep Bulk	General
Defiantly Brazen	General
Downright Beautiful	General
DB boards	General
Dearly Beloved	General
Dat Bone	General
Dog Bone	General
Dirt Box	General
Dark Backstory	General
Dead Body	Governmental
Death Bringer	Governmental
DABHOI JN	Indian Railway Station
Database	Information Technology
Dil Bilimi	International
Diametrul Baza	International
Dünya Bankasi	International
Deutsche Bundesbahn	International
D?D?ya Bankasi	International
Don't Bother	Internet
Defined Benefit	Jobs
Double Blind	Maths
Double Bottom hip	Medical
Deaf-Blind	Medical
Demineralised Bone	Medical
Diet Beverage	Medical
Direct Bilirubin	Medical
Disruptive Behaviour	Medical
distobuccal	Medical
DNA binding	Medical
Dot Blot	Medical
Duodenal Bulb	Medical
Downstream Box	Medical
Decidua Basalis	Medical
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Dextran Blue	Medical
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De rotation Boot	Medical
Disability	Medical
Douche Bag	Messaging
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Disciplinary Barracks	Military and Defence
Dirty Bastard	Military and Defence
Data Bus	Space Science
Deadband	Space Science
Direct Broadcast	Space Science
Design Baseline	Space Science
Distribution Box	Space Science
Dry Bulb	Space Science
Decibels	Space Science
Digital Bilevel Acquisition	Space Science
Dial Back	Telecommunication
Dropped Burst	Telecommunication
Decibel	Telecommunication
Dabhoi Junction	Transport & Travel