logging in or signing up 04) GSM-BTS Antenna System_MOO_24Feb06 mosesdam Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 255 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: June 02, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: jolia (7 month(s) ago) nice presentation kindly send me this on my email address plz khan.adnan@rocketmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: machhli (8 month(s) ago) plzz i want this presentation.... Saving..... Post Reply Close Saving..... 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Edit Comment Close Premium member Presentation Transcript GSMBTS ANTENNA : GSMBTS ANTENNA Slide 3: OBJECTIVES To know GSM Antenna specifications and definitions To identify the difference between space and polarization diversity To comprehend the structure of the antenna system in a BTS Site Slide 4: RADIO WAVES Is a form of electromagnetic radiation typically generated as disturbances sent out by oscillating charges on a transmitting antenna Slide 5: ANTENNA An Antenna is any device used to collect or radiate Electromagnetic Waves Slide 6: ANTENNA for MOBILE COMMUNICATIONS Linear antennas are used: Monopole (Slab) Dipole Elements Mobile Phones Base Tranceiver Station Antenna Single Monopole Patch Antenna Array of dipoles Slide 7: ANTENNA ELECTRICAL PROPERTIES Operating Frequency Band Input impedance VSWR Polarization Gain Radiation Pattern Horizontal/Vertical beamwidth Downtilt Front/back ratio Sidelobe suppression and null filling Power capability 3rd order Intermodulation Insulation Slide 8: ANTENNA MECHANICAL PROPERTIES Size Weight Radome material Appearance and color Working temperature Storage temperature Windload Connector types Package Size Lightning Protection Slide 9: ANTENNA BASIC STRUCTURE Antenna are generally composed of stacked of dipole bundling their radiated power to form a desired antenna pattern in vertical plains around the antenna Depending on the gain desired that wants to be achieved several of those dipoles can be arranged on top of one another Slide 10: GENERATION OF RADIO WAVES DIPOLES Slide 11: HALF WAVE DIPOLE GAIN= 10log(4mW/1mW) = 6dBd Slide 12: ISOTROPIC ANTENNA Gain=10log(8mW/1mW) = 9dBi Slide 13: dBd and dBi GAIN COMPARISON Dipole Ideal radiating dot source (lossless radiator) 0dBd = 2.15dBi Slide 14: dBd and dBi GAIN COMPARISON Slide 15: ANTENNA ARRAYS Slide 16: GSM ANTENNA FREQUENCY RANGE Slide 17: GSM ANTENNA FREQUENCY RANGE BANDWIDTH = 960 - 890 = 70MHz Slide 18: IMPEDANCE Standard Value: 50 Cable 50 ohms Antenna 50 ohms Slide 19: VOLTAGE STANDING WAVE RATIO (VSWR) 9.5 W Forward: 10W Backward: 0.5W Return Loss： 10log(10/0.5) = 13dB VSWR (Voltage Standing Wave Ratio) Slide 20: VOLTAGE STANDING WAVE RATIO (VSWR) 1.5 = (VSWR-1)/(VSWR+1) RL = -20lg Slide 21: BEAMWIDTH Slide 22: 3dBm HORIZONTAL BEAMWIDTH Directional Antenna：65°/90°/105°/120° Omni：360° Slide 23: 3dBm VERTICAL BEAMWIDTH Slide 24: BEAMWIDTH Slide 25: ANTENNA STRUCTURE TYPES Slide 26: RADIATION PATTERN Typical Flat-Panel Antenna Typical Omni Antenna Slide 27: TWO TYPES OF DIVERSITY SPACE DIVERSITY POLARIZATION DIVERSITY Slide 28: POLARIZATION Vertical Horizontal + 45degree slant - 45degree slant Slide 29: SPACE DIVERSITY Slide 30: POLARIZATION DIVERSITY Slide 31: TYPES OF ANTENNA Linear Polarization,vertical X Polarization, 45 Slide 32: ANTENNA DOWN TILT Mechanical down tilt Fixed electronic down tilt Adjustable electronic down tilt Slide 33: MECHANICAL DOWN TILT It is achieved by physically tilting the antenna out of the perpendicular by using down tilt kit PROS: Cost efficient and flexible CON: Has no effect on the side-lobe characteristics of the antenna Slide 34: ELECTRICAL DOWN TILT Electrical downtilt can be fixed or switchable Fixed is tuned by the manufacturer Switchable allows adjustment in a certain lever on the rear of the antenna Slide 35: ELECTRICAL DOWN TILT Non down tilt Electronic downtilt Mechanical downtilt Slide 36: ELECTRICAL DOWN TILT Slide 37: ELECTRICAL DOWN TILT Slide 38: ANTENNA TILT DEVELOPMENT Broad bandMultifunctionalHigh Integrity Slide 39: ANTENNA TILT DEVELOPMENT Slide 40: FRONT-TO-BACK RATIO Ratio of maximum mainlobe to maximum sidelobe F/B = 10 log(FP/BP) typically ： 25dB Back power Front power Slide 41: UPPER SIDELOBE SUPPRESSION AND NULL FILL Slide 42: UPPER SIDELOBE SUPPRESSION AND NULL FILL Gain reduction as a function of (vertical angle) Slide 43: INTERMODULATION (IM) It occurs when two signals of a different frequency mix in a non-linear device It can be a problem at any site that has two or more transmitters It can be caused by a transmitter of the same system or by a transmitter in another site that is co-sited or has a site in the neighborhood 913 MHz 936 MHz 959 MHz 982 MHz IMD@243dBm f1, f2, 2f1-f2, 2f2-f1 Slide 44: PERMITTED POWER Continuous :25-1500 watts peak :n2p Slide 45: ISOLATION 1000mW ( 1W) 1mW 10log(1000mW/1mW) = 30dB Slide 46: ANTENNA MECHANICAL PROPERTIES Slide 47: DIMENSIONS LWH Length：connected with vertical bandwidth and gain Width：connected with horizontal bandwidth Height：connected with techniques adopted Slide 48: WEIGHT A factor that can affect transmission and deployment Slide 49: RADOME MATERIAL PVC, Fiberglass Anti-temperature, water-proof，anti-aging，weather resistant Slide 50: COLOR Good-looking Environment-protecting Slide 51: COLOR Slide 52: TEMPERATURE RANGE OPERATING AND STORAGE Typical range：-40°C — +70°C Slide 53: 7/16”DIN，N，SMA female CONNECTOR TYPE Slide 54: Mast diameter 45-90mm MAST Slide 55: Direct Ground LIGHTNING PROTECTION Slide 56: By frequency band: GSM900, GSM1800, GSM900/1800 By polarization: Vertical, Horizontal, ±45º linear polarization, circle polarization By pattern: Omni-directional, directional By down-tilt: Non, mechanical, electronic adjustment, remote control By function: Transmission, receiving, transceiving ANTENNA TYPES Slide 57: 870-960MHz and 1710-1880MHz Extended band option with 806-960MHz Dual slant ±45º polarization 65º horizontal beamwidth Band independent Teletilt™ control 17dBi gain in both bands Diplexed or Non-Diplexed versions Mechanical downtilt mounting option MULTIPLE BAND ANTENNA Slide 58: 7/8” MAIN FEEDER FEEDER Slide 59: 1/2” （JUMPER CABLE） JUMPER CABLE Slide 60: 7/16”DIN-F（DIN CONNECTOR） 7/16”DIN-M（DIN & N CONNECTOR） CONNECTOR Slide 61: LIGHTNING ARRESTOR Slide 62: Trimming Tool or Hand Tool Kit Clamp Earthing Kit Wall Glands Hoisting Stocking Universal Ground Bar ACCESSORIES Slide 63: Antenna 7/16 Din Connector 7/8“ Cable Grounding 1/2“ Jumper Cabinet EMP Grounding clip Grounding bar 1/2 Clamp Tower Top Amplifier 7/8“ Cable Machine house 1/2 Jumper ANTENNA SYSTEM You do not have the permission to view this presentation. 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04) GSM-BTS Antenna System_MOO_24Feb06 mosesdam Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 255 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: June 02, 2011 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: jolia (7 month(s) ago) nice presentation kindly send me this on my email address plz khan.adnan@rocketmail.com Saving..... Post Reply Close Saving..... Edit Comment Close By: machhli (8 month(s) ago) plzz i want this presentation.... Saving..... Post Reply Close Saving..... Edit Comment Close By: adawe1 (8 month(s) ago) Hi dear i have just read your sides about Telecommunication Mobile and i like it so much the way it talking about it;s Mobile equipment so on, anyway i am rather prefer to download these slides so could you offer me it please? Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript GSMBTS ANTENNA : GSMBTS ANTENNA Slide 3: OBJECTIVES To know GSM Antenna specifications and definitions To identify the difference between space and polarization diversity To comprehend the structure of the antenna system in a BTS Site Slide 4: RADIO WAVES Is a form of electromagnetic radiation typically generated as disturbances sent out by oscillating charges on a transmitting antenna Slide 5: ANTENNA An Antenna is any device used to collect or radiate Electromagnetic Waves Slide 6: ANTENNA for MOBILE COMMUNICATIONS Linear antennas are used: Monopole (Slab) Dipole Elements Mobile Phones Base Tranceiver Station Antenna Single Monopole Patch Antenna Array of dipoles Slide 7: ANTENNA ELECTRICAL PROPERTIES Operating Frequency Band Input impedance VSWR Polarization Gain Radiation Pattern Horizontal/Vertical beamwidth Downtilt Front/back ratio Sidelobe suppression and null filling Power capability 3rd order Intermodulation Insulation Slide 8: ANTENNA MECHANICAL PROPERTIES Size Weight Radome material Appearance and color Working temperature Storage temperature Windload Connector types Package Size Lightning Protection Slide 9: ANTENNA BASIC STRUCTURE Antenna are generally composed of stacked of dipole bundling their radiated power to form a desired antenna pattern in vertical plains around the antenna Depending on the gain desired that wants to be achieved several of those dipoles can be arranged on top of one another Slide 10: GENERATION OF RADIO WAVES DIPOLES Slide 11: HALF WAVE DIPOLE GAIN= 10log(4mW/1mW) = 6dBd Slide 12: ISOTROPIC ANTENNA Gain=10log(8mW/1mW) = 9dBi Slide 13: dBd and dBi GAIN COMPARISON Dipole Ideal radiating dot source (lossless radiator) 0dBd = 2.15dBi Slide 14: dBd and dBi GAIN COMPARISON Slide 15: ANTENNA ARRAYS Slide 16: GSM ANTENNA FREQUENCY RANGE Slide 17: GSM ANTENNA FREQUENCY RANGE BANDWIDTH = 960 - 890 = 70MHz Slide 18: IMPEDANCE Standard Value: 50 Cable 50 ohms Antenna 50 ohms Slide 19: VOLTAGE STANDING WAVE RATIO (VSWR) 9.5 W Forward: 10W Backward: 0.5W Return Loss： 10log(10/0.5) = 13dB VSWR (Voltage Standing Wave Ratio) Slide 20: VOLTAGE STANDING WAVE RATIO (VSWR) 1.5 = (VSWR-1)/(VSWR+1) RL = -20lg Slide 21: BEAMWIDTH Slide 22: 3dBm HORIZONTAL BEAMWIDTH Directional Antenna：65°/90°/105°/120° Omni：360° Slide 23: 3dBm VERTICAL BEAMWIDTH Slide 24: BEAMWIDTH Slide 25: ANTENNA STRUCTURE TYPES Slide 26: RADIATION PATTERN Typical Flat-Panel Antenna Typical Omni Antenna Slide 27: TWO TYPES OF DIVERSITY SPACE DIVERSITY POLARIZATION DIVERSITY Slide 28: POLARIZATION Vertical Horizontal + 45degree slant - 45degree slant Slide 29: SPACE DIVERSITY Slide 30: POLARIZATION DIVERSITY Slide 31: TYPES OF ANTENNA Linear Polarization,vertical X Polarization, 45 Slide 32: ANTENNA DOWN TILT Mechanical down tilt Fixed electronic down tilt Adjustable electronic down tilt Slide 33: MECHANICAL DOWN TILT It is achieved by physically tilting the antenna out of the perpendicular by using down tilt kit PROS: Cost efficient and flexible CON: Has no effect on the side-lobe characteristics of the antenna Slide 34: ELECTRICAL DOWN TILT Electrical downtilt can be fixed or switchable Fixed is tuned by the manufacturer Switchable allows adjustment in a certain lever on the rear of the antenna Slide 35: ELECTRICAL DOWN TILT Non down tilt Electronic downtilt Mechanical downtilt Slide 36: ELECTRICAL DOWN TILT Slide 37: ELECTRICAL DOWN TILT Slide 38: ANTENNA TILT DEVELOPMENT Broad bandMultifunctionalHigh Integrity Slide 39: ANTENNA TILT DEVELOPMENT Slide 40: FRONT-TO-BACK RATIO Ratio of maximum mainlobe to maximum sidelobe F/B = 10 log(FP/BP) typically ： 25dB Back power Front power Slide 41: UPPER SIDELOBE SUPPRESSION AND NULL FILL Slide 42: UPPER SIDELOBE SUPPRESSION AND NULL FILL Gain reduction as a function of (vertical angle) Slide 43: INTERMODULATION (IM) It occurs when two signals of a different frequency mix in a non-linear device It can be a problem at any site that has two or more transmitters It can be caused by a transmitter of the same system or by a transmitter in another site that is co-sited or has a site in the neighborhood 913 MHz 936 MHz 959 MHz 982 MHz IMD@243dBm f1, f2, 2f1-f2, 2f2-f1 Slide 44: PERMITTED POWER Continuous :25-1500 watts peak :n2p Slide 45: ISOLATION 1000mW ( 1W) 1mW 10log(1000mW/1mW) = 30dB Slide 46: ANTENNA MECHANICAL PROPERTIES Slide 47: DIMENSIONS LWH Length：connected with vertical bandwidth and gain Width：connected with horizontal bandwidth Height：connected with techniques adopted Slide 48: WEIGHT A factor that can affect transmission and deployment Slide 49: RADOME MATERIAL PVC, Fiberglass Anti-temperature, water-proof，anti-aging，weather resistant Slide 50: COLOR Good-looking Environment-protecting Slide 51: COLOR Slide 52: TEMPERATURE RANGE OPERATING AND STORAGE Typical range：-40°C — +70°C Slide 53: 7/16”DIN，N，SMA female CONNECTOR TYPE Slide 54: Mast diameter 45-90mm MAST Slide 55: Direct Ground LIGHTNING PROTECTION Slide 56: By frequency band: GSM900, GSM1800, GSM900/1800 By polarization: Vertical, Horizontal, ±45º linear polarization, circle polarization By pattern: Omni-directional, directional By down-tilt: Non, mechanical, electronic adjustment, remote control By function: Transmission, receiving, transceiving ANTENNA TYPES Slide 57: 870-960MHz and 1710-1880MHz Extended band option with 806-960MHz Dual slant ±45º polarization 65º horizontal beamwidth Band independent Teletilt™ control 17dBi gain in both bands Diplexed or Non-Diplexed versions Mechanical downtilt mounting option MULTIPLE BAND ANTENNA Slide 58: 7/8” MAIN FEEDER FEEDER Slide 59: 1/2” （JUMPER CABLE） JUMPER CABLE Slide 60: 7/16”DIN-F（DIN CONNECTOR） 7/16”DIN-M（DIN & N CONNECTOR） CONNECTOR Slide 61: LIGHTNING ARRESTOR Slide 62: Trimming Tool or Hand Tool Kit Clamp Earthing Kit Wall Glands Hoisting Stocking Universal Ground Bar ACCESSORIES Slide 63: Antenna 7/16 Din Connector 7/8“ Cable Grounding 1/2“ Jumper Cabinet EMP Grounding clip Grounding bar 1/2 Clamp Tower Top Amplifier 7/8“ Cable Machine house 1/2 Jumper ANTENNA SYSTEM