Mechanical vs Electrical Tilt

[khatib86]

Dear colleague,

kindly find the attached file which summarize a difference between Electrical and Mechanical tilts,

[Stantheman]

higher resolution copy available here http://telecomfunda.com/forum/viewtopic.php?f=5&t=610

[kevin_h811]

Hi,

Very much appreciate if anyone here could share for vertical BW, specially comparison of Low and High Gain Antenna.

Regards//

[peanut]

Hi,

Very much appreciate if anyone here could share for vertical BW, specially comparison of Low and High Gain Antenna.

Regards//

Dear, I think the main difference in vertical pattern is the back lobe

In the case of a mechanical down tilt, the back side will be up tillted
In the case of a electrical down tilt, the back side will be down tillted too

Regards,

[peanut]

I have attached a good document from andrew describing the differences advanges and drawbacks of using mechanical downtilts

here is a brief summary:

Mechanical downtilt Adverse effect
Pattern blooming
Electrical downtilt advantages
Pattern control
Preserving Beam Squint
Preserving Sector Power Ratio
Combined Electrical And Mechanical Downtilt Adverse Effects
Rule of Thumb

Regards,

[optwcdma]

Hi Everyone,
I have another document about Antenna pattern, It is very useful for do optimization. Name of document is Cellular Network Planning and Optimization Part IV: Antennas

[aubidamax]

Hi,

Very much appreciate if anyone here could share for vertical BW, specially comparison of Low and High Gain Antenna.

Regards//

hi kevin_h811

i made this simulation before ..take a look to the results...



thanks

BR

[Olak]

higher resolution copy available here http://telecomfunda.com/forum/viewtopic.php?f=5&t=610

When using electrical tilt, the centre of the lobe of the antenna is reduced without distorting the beam width of the antenna while mechanical tilt will distort the beam width and increase the side lobe.

[nron3]

Dear peanut (http://www.finetopix.com/member.php?5550-peanut),

I can not view it.. may i know how to view your post???
I am new here... Many thank....