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SINA INSTITUE OF NETWORKS & AESTHETICS

12

MICROWAVE & LINK PLANNINGSUBMITED BY: SALMAN AHMED

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Establishing a Microwave link between two sites

Microwave communication is developed on the basis of the electromagnetic field theory.

Microwave is a kind of electromagnetic wave. In a broad sense, the microwave frequency range is from

300 MHz to 300 GHz. But In microwave communication, the frequency range is generally from 3 GHz to

30 GHz.

According to the characteristics of microwave propagation, microwave can be considered as plane wave.

In plane wave, the electric field and magnetic field components are perpendicular to the propagation

direction. Therefore, it is called transverse electromagnetic wave and TEM wave for short.

Microwave Equipment Category

Analog microwave (Not presently used ) Digital microwave1. PDH2. SDH

Trunk Microwave Equipment

RF, IF, signal processing, and MUX/DEMUX units are all indoor. Only the antenna system is outdoor

High cost, large transmission capacity, more stable performance, applicable to long haul andtrunk transmission

All Outdoor Microwave Equipment

All the units are outdoor

Split-MountMicrowave Equipment

The RF unit is an outdoor unit (ODU). The IF, signal processing, and MUX/DEMUX units areintegrated in the indoor unit (IDU). The ODU and IDU are connected through an IF cable.

The ODU can either be directly mounted onto the antenna or connected to the antenna through a short

soft waveguide

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Types of Digital Microwave Stations

Digital microwave stations are classified into Pivotal stations, add/drop relay stations, relaystations and terminal stations.

Protection Modes of Digital Microwave Equipment:

With one hybrid coupler added between two ODUs and the antenna, the 1+1 HSB can berealized in the configuration of one antenna. Moreover, the FD technology can also be adopted.

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The 1+1 HSB can also be realized in the configuration of two antennas. In this case, the FD and SD

technologies can both be adopted, which improves the system availability.

Survey Report:

I-8/4 Sina Institute

F-8 Markaz Mobilink

Survey Date: 25 Jan 2012

Site Name: I-8/4 Sina Institute

Equipment Mobel: SynchCOM DRS SS-IP

Surveyor Name: Aamir Zaka

Room Layout:

ELECTRIC SOCKET

BATTARYBANK

MICROWAVEINDOOR UNIT

RECTIFIER

ANTENNA(OUTDOOR UNIT) ANTENNA(OUTDOOR UNIT)

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Site Survey Requirement

Building Shelter

New Cabinet Shelter required

Existing Cabinet Shelter available

Equipment Room

New Equipment Room

Existing Equipment Room Cabinet required

Replace/Remove Existing one Cabinet available Ventilation of proposed Equipment

Natural Air Air Conditioned Other Tower

New Tower required Existing Tower

Type of Tower

Self support Guy wired Monopole

Type of Mounting

Green mount Roof mount Others

Other Antenna available on Tower

Yes NoTower Height: 3 Meters

IF cable length 2x12M

Power Supply Facilities

A.C. commercial power

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Rated voltages 220 Volt

Rated frequency 60 Hertz

Generator Back up Available

Yes No

Rectifier:

Yes NoBattery Storage

Existing Battery bank available New Battery bank installedCoordinates:

Latitude (N) 33.667383 Longitudes (E) 73.077731

Elevation 1923 feet ASL Degree 65