Photo Gallery(GSM)



This is inside the GSM Dual band antenna. What you see in the left side is for 900MHz band.
Right side array is for 1800MHz. Is is a Patch Panel antenna.
This display is kept at DTTC Chennai Telecom Museum


A single antenna element is removed from the patch panel antenna array and displayed.
The components are removed and kept separated so that each part can be visible.
This element basically has 3 parts.
This display is kept at DTTC Chennai Telecom Museum
The electrical tilt portion of the gsm patch panel antenna is removed and displayed in the DTTC Chennai Telecom Museum.
This display is kept at DTTC Chennai Telecom Museum


This is the electrical tilt closeup image. The cable distance between the input feed and the antenna element is varied by a slider. This slider  can be moved by rotating the electrical tilt rotating wheel. This rotation can be controlled remotely also by using a motor.
This display is kept at DTTC Chennai Telecom Museum


Electrical tilt of GSM patch panel antenna.  You can view how much electrical tilt this antenna has been set.
This display is kept at DTTC Chennai Telecom Museum
This image shows the inside of the 2G GSM antenna 900Mhz.
it is a array of dipole element set at +45 and -45 degrees.
This display is kept at DTTC Chennai Telecom Museum


These are  the parts of parabolic microwave antenna used in the backhaul between BTS and BSC.
This display is kept at DTTC Chennai Telecom Museum