Full Form of DBD

What is DBDM Full Form?

DBDM full form is Dual Band Dual Mode.

What is Dual Band Dual Mode?

A compact dual-band dual-mode and dual-polarized (DBDMDP) antenna based on an asymmetrical Y-shaped microstrip line feeding along with a square ring radiator is proposed. The structure is loaded with two pairs of L-strips to extend the lower mode bandwidth (center frequency fc = 9.36 GHz). This section is employed to change an electromagnetic field distribution and achieve dipole-like omni-directional linearly polarized (LP) radiation. The asymmetrical Y-shaped microstrip line feeding section is used to realize patch-like directional circular polarization (CP) radiation for the higher mode (at fc = 12.13 GHz). The measured results show that the 10-dB impedance bandwidths for the dipole mode and patch mode are equal to 730 MHz (7.72%, fc = 9.45 GHz) and 1648 MHz (14.26%, fc = 11.56 GHz), respectively, among which the 3 dB simulated axial ratio bandwidth of the patch mode is of 1280 MHz (10.74%, centre frequency of CP band fCP = 11.92 GHz). The two modes’ maximum gains at fc = 9.36 and 12.13 GHz are equal to 1.44 and 2.62 dBi, respectively. The maximum peak gain is of 3.32 dBi at frequency of 12.27 GHz. This single-feed patch antenna can be useful in wireless communication applications for its compact structure, considerable bandwidth, stable radiation pattern and polarization diversity.

What is DBDP Full Form?

DBDP full form is Dual-Band Dual-Polar.

What is DBDPA Full Form?

DBDPA full form is Dual Band Dual Polar Antenna.

What is Dual Band Dual Polar Antenna?

This letter presents a dual-band, dual-polarized antenna array arrangement for low grating lobe base-station antenna applications. The presented array arrangement uses two different lower band elements to achieve a 2.5-time element spacing array scheme, in which lower band elements spacing is 2.5 times of upper band elements spacing. With this arrangement, both the lower and upper band element spacing can be reduced, leading to a better grating lobe performance. To verify the idea, an antenna array operating at two bands, namely, 690-960 and 1690-2690 MHz, is presented. For 690-960 MHz array, two different radiation elements are designed, each of them has two pairs of bent dipoles for dual-polarization operation. The smaller lower band element is embedded with one upper band element. Meanwhile, the larger one is embedded with two upper band elements. An array consisting of five lower band elements and 12 upper band elements is fabricated and tested. Measured results show that the array has a good performance with return loss larger than 15 dB, ports isolation better than 28 dB. Besides, the grating lobe value is better than -12 dB at tilt angle 12° for both upper and lower band, which is a significant improvement over its former counterparts.

A dual-band dual-polarized omnidirectional antenna is investigated. The two bands are generated by a lower circular patch and an upper circular patch, respectively. A set of conductive vias and a coupled ring are utilized to widen the antenna bandwidth. Curved branches are introduced to contribute to circularly polarized radiation. A prototype was designed, fabricated and measured to demonstrate the performance of the antenna. Measured results show that an overlapped bandwidth of 15% from 2.22 to 2.58 GHz for both S11 ≤ −10 dB and axial ratio ≤3 dB is obtained in the low band, and an impedance bandwidth of 11.1% from 5.63 to 6.29 GHz is achieved in the high band. Measured peak gains are approximately 4.3 dBic and 5.4 dBi at two bands. Moreover, omnidirectional radiation patterns are also obtained within the operating band.

What is DBDT Full Form?

DBDT full form is Dual-Band Desk-Top.

What is DBDTA Full Form?

DBDTA full form is Dual-Band Desk-Top Antenna.

What is DBD Full Form?

DBDv is full form Department of Business Development

What is Department of Business Development?

Department of Business Development (DBD), Ministry of Commerce ... The DBD has the authority to control the registration of business and affirm business documents

What is DBDF Full Form?

DBDF is full form Doing Business Data Form

What is Doing Business Data Form?

Any entity receiving, applying for or proposing on an award or agreement must complete a Doing Business Data Form (see Q&A sheet for more information). ... Submission of a complete and accurate form is required for a proposal to be considered responsive or for any entity to receive an award or enter into an agreement.

What is DBDI Full Form?

DBDI is full form Deutsche Bank Direct Internet

What is Deutsche Bank Direct Internet?

Use your Deutsche Bank Savings or Current Account to make online purchases and also earn express rewards. From paying utility bills, insurance premia, travel bookings, movie ticket bookings to shopping online, a lot of your transactions are supported by db DirectDebit facility.

All you need to remember is your db OnlineBanking login and transaction passwords.

The entire transaction is done on the secure Deutsche Bank website, and not on the merchant website.
This payment option is faster than paying through other modes of payment as you only need to enter the login, transaction passwords and OTP (One Time Password).      

What is DBDN Full Form?

DBDN is full form Duff Beers Dailey News

What is Duff Beers Dailey News?

Duff Beer is a brand of beer that originated as a fictional beverage on the animated series The Simpsons. Beers using the Duff branding have been brewed in a number of countries, resulting in legal battles with varying results. An official version of the beer is sold in three variations near the Simpsons Ride at Universal Studios. In 2015, 20th Century Fox, producer of The Simpsons, began selling licensed Duff beer in Chile, with a view to driving out brandjacking.[1][2]

In 2016, Time included Duff Beer in a list of the most influential fictional companies of all time.[3]

Contents
1    Duff in The Simpsons
1.1    Duff Gardens
2    Creation
3    Real Duff beers
3.1    United States
3.2    Germany
3.2.1    European Trademark
3.3    United Kingdom
3.4    Australia
3.5    Chile
3.6    Mexico
3.7    France
3.8    New Zealand
3.9    Duff Energy Drink
4    References
 

What is IDBD Full Form?

IDBD is full form Incremental Delta-Bar-Delta (algorithm)

What is Incremental Delta-Bar-Delta (algorithm)?

I present a new algorithm, the Incremental Delta-Bar-Delta (IDBD) algorithm, for the learning of appropri- ate biases based on previous learning experience. ... The IDBD algorithm adjusts the learning-rate parameters, which are an important form of bias for this system.