Antenna Gsm
2010
 |
 Alfa ARS HSPA 3G UMTS GSM Antenna Extender with Magnet $9.99 Time Remaining: 6d 19h 34m Buy It Now for only: $9.99 |
 GSM GPRS EDGE Wireless Modem USB Adapter with Antenna $28.00 Time Remaining: 1d 5h 58m |
 GSM CDMA mobile covert antenna CVS 900 1900 TNC plug male $25.00 Time Remaining: 16d 1h 38m Buy It Now for only: $25.00 |
 800 900 1800 1900 MHz GSM Omni Antenna SMA Plug RA $3.50 Time Remaining: 12d 53m Buy It Now for only: $3.50 |
 5 PCS EAD FMQ35094 UF 10 Mini Quad GSM Dual Band Internal PCB Antenna $8.99 Time Remaining: 24d 9h 47m Buy It Now for only: $8.99 |
 900MHz 35dBi RP SMA GSM Antenna for wireless router $5.80 Time Remaining: 21d 5h 36m Buy It Now for only: $5.80 |
 Digi Connect WAN GSM Wireless Router Edge 10 50000888 05 W Antenna $149.99 Time Remaining: 2d 17h 11m Buy It Now for only: $149.99 |
 800 900 1800 1900 MHz GSM Omni Antenna SMA Plug ST $3.50 Time Remaining: 18d Buy It Now for only: $3.50 |
 ZTE MF62 3G 4G Mobile Hotspot WiFi Modem GSM 21Mbps HSPA+13dBi External Antenna $143.90 Time Remaining: 1d 22h 6m Buy It Now for only: $143.90 |
 Antenna Products AMR Omni 1428MHz 9 Cellular GSM Antenna AMR10 1428T0 $65.00 Time Remaining: 10d 19h 15m Buy It Now for only: $65.00 |
 GSM Antenna 2 dbi 824 960Mhz 1710 1990Mhz TNC Plug $17.85 Time Remaining: 25d 6h 32m Buy It Now for only: $17.85 |
 9DBi GSM antenna for 3G data card for Huawei USB adapte $26.00 Time Remaining: 12d 37m Buy It Now for only: $26.00 |
 2x 900 1800MHz GSM Internal Antenna UFL IPX $6.00 Time Remaining: 14d 2h 51m Buy It Now for only: $6.00 |
 824 960Mhz GSM Omni Antenna 3 DBi tilt and swivel BNC $9.99 Time Remaining: 25d 7h 5m Buy It Now for only: $9.99 |
 USB Antenna GSM GPRS Wireless Modem Adapter $35.00 Time Remaining: 9d 4h 58m Buy It Now for only: $35.00 |
 NEW 900MHz 3 dBi FME jack magnetic GSM Antenna $8.00 Time Remaining: 7d 4h 44m Buy It Now for only: $8.00 |
 USB GSM GPRS EDGE Wireless Modem Adapter with Antenna $22.70 Time Remaining: 6d 1h 20m |
 USB GSM GPRS EDGE Wireless Modem Adapter with Antenna $29.99 Time Remaining: 16d 2h 38m Buy It Now for only: $29.99 |
 10x 800 900 1800 1900 MHz GSM Omni Antenna SMA Plug RA $28.99 Time Remaining: 1d 26m Buy It Now for only: $28.99 |
 824 960Mhz GSM Antenna 2 DBi SMA Plug Straight $4.50 Time Remaining: 16d 5h 23m Buy It Now for only: $4.50 |
 35 DBi 824 960Mhz GSM Omni Antenna tilt and swivel SMA $6.80 Time Remaining: 13d 4h 59m Buy It Now for only: $6.80 |
 USB GSM GPRS EDGE Wireless Modem Adapter with Antenna $29.99 Time Remaining: 16d 2h 44m Buy It Now for only: $29.99 |
 Taoglas GSM Dual band PCB Antenna PC11090100A Lot of 100 $500.00 Time Remaining: 13d 2h 6m Buy It Now for only: $500.00 |
 Taoglas GSM Dual band PCB Antenna PC27070100A Lot of 100 $500.00 Time Remaining: 13d 2h Buy It Now for only: $500.00 |
 Taoglas GSM Dual band PCB Antenna PC11070100A Lot of 100 $500.00 Time Remaining: 13d 2h 3m Buy It Now for only: $500.00 |
 NEW GSM 900MHz Hi Power Phone AmplifierRepeater Indoor outdoor antenna set $240.00 Time Remaining: 5d 2h 53m Buy It Now for only: $240.00 |
 NEW Ericsson LMU KRC 16190 1 Modem GSM GPS Antenna Complete System Kit KRE NCD $999.00 Time Remaining: 22d 21h 45m Buy It Now for only: $999.00 |
 USB Antenna GSM GPRS Wireless Modem Adapter $35.00 Time Remaining: 1d 7h 8m Buy It Now for only: $35.00 |
 SP 900MHz H pol 70 128dBi Sector Antenna ISM GSM $319.00 Time Remaining: 8d 10h 21m Buy It Now for only: $319.00 |
 GSM GPRS EDGE Wireless Modem USB Adapter with Antenna $30.00 Time Remaining: 6d 22h 43m Buy It Now for only: $30.00 |
 USB GSM GPRS EDGE Wireless Modem Adapter with Antenna $28.70 Time Remaining: 6d 1h 19m Buy It Now for only: $28.70 |
Antenna Gsm
M2M Antennas: Groundplane guidelines for optimum performance
The use of wireless for machine-to-machine (M2M) communications is expanding rapidly. M2M Wireless solutions are being installed in a growing range of mobile and device settings: ATM Machines, Smart Grid and Utility Meters, Commercial and Mass-transit Vehicles, Vending Machines, and Agricultural and Mining Sensors.
M2M Antennas are an important and often overlooked link in this type of wireless network. The purpose of this white paper is to provide some guidelines and suggestions on ways to ensure a proper groundplane to ensure optimum performance. Mobile Mark M2M antennas will be used as the examples.
Device antennas are typically designed as quarterwave or halfwave. As a rule of thumb, quarterwave antennas require a groundplane but halfwave antennas are groundplane independent and do not need a groundplane to operate. However, most M2M antennas show improved performance with a larger groundplane.
Mobile Mark offers several antenna styles that can be used as M2M antennas. These antennas have been configured for different frequency ranges, the most common being Cellular at 850 & 1900 MHz, WiFi at 2.4 GHz.
RM, LMW and SMW Surface Mount Series: The RM and SMW Series M2M antennas are based on wideband one quarter-wave elements. For the lower frequencies, 694 to 1200 MHz, additional ground planes are required for the antenna to meet its specifications.
Since the antennas are one quarter-wave based designs, the ground plane we recommend is 12 inch by 12 inch; this is what we use to verify our M2M antennas performance. When mounted on the metal surfaces of a vehicle the ground plane requirements are easily met. However in some cases vehicle will have a non-metallic surface, such as fiberglass, where the antenna is to be mounted. In these cases we recommend the use of aluminum flashing tape on the underside of the fiberglass surface. The tape can be installed in an X shape with the mounting stud of the antenna in the center of the X. The mounting stud/nut must contact the tape.
In telemetry applications it is common for the M2M antenna to be mounted to a metal equipment cabinet. The metal surfaces of the cabinet with fulfill the grounding requirements. In many telemetry applications the use of non-metallic enclosures are becoming more common. Since they are typically fiberglass or plastic they will not provide the necessary grounding for the antenna. In these cases an application of aluminum tape to the inside of the cabinet or possibly a custom metal plate can be fabricated to allow the antenna to function properly. When using these M2M antennas with a pole mount the mounting brackets and hardware provide an adequate ground.
For 1700 to 6000 MHz applications the metal included in the antenna assembly usually provide an adequate ground plane. Of course, as with any antenna, the larger the groundplane the better.
DM, MRM and SMD Surface Mount Series: For the most part these M2M antennas have enough metal to provide adequate grounding as part of their assembly because they are designed to operate on frequencies above 2.0 GHz. As with all of our mobile antennas, we test and characterize these higher frequency M2M Antennas mounted to our standard 12 inch by 12 inch ground plane but they will meet their specifications without it.
SM (Low Profile Surface Mount) Series: The SM Series M2M Antennas in the 800 and 900 MHz ranges require a good ground plane. The ground plane we recommend is 12 inch by 12 inch; this is what we use to verify our antennas performance. When mounted on the metal surfaces of a vehicle the ground plane requirements are easily met. However in many cases vehicle will have a non-metallic surface, like fiberglass, where the antenna is to be mounted. In these cases we recommend the use of aluminum flashing tape on the underside of the fiberglass surface. The tape can be installed in an X shape with the mounting stud of the antenna in the center of the X. The mounting stud/nut must contact the tape. There is no pole mount available for the SM antennas in this frequency range.
The SM Series M2M antennas used from 1700 MHz and above have enough internal metal to act as their own ground plane. Of course, as with any antenna, the larger the groundplane the better.
In telemetry applications it is common for the antenna to be mounted to a metal equipment cabinet. The metal surfaces of the cabinet with fulfill the grounding requirements. In many telemetry applications the use of non-metallic enclosures are becoming more common. Since they are typically fiberglass or plastic they will not provide the necessary grounding for the antenna. In these cases an application of aluminum tape to the inside of the cabinet or possibly a custom metal plate can be fabricated to allow the antenna to function properly.
About Mobile Mark, Inc.:
Mobile Mark, Inc. designs and manufactures site, mobile and device antenna for 600 MHz – 9 GHz. Applications include GPS Tracking & Fleet Management, Cellular GSM/CDMA, LTE, WiMAX, WiFi, RFID, Public Safety, Military and Machine-to-Machine (M2M). Engineering and custom design services available. Mobile Mark's global headquarters, which include research facilities and manufacturing plant, are located near Chicago, IL. An additional manufacturing and sales facility is located near Birmingham, UK. RFID Antenna Designs by Mobile Mark are used by manufacturers and installer throughout the US and Europe. Complete information on the variety of M2M Antennas can be found on the Mobile Mark website.
About the Author
For more information about M2M antennas , please visit us at: http://www.mobilemark.com
GPS Antenna by Anand Technologies, Bengaluru
