RF Products

Cellcomm has a well-equipped manufacturing facility supported by competent R&D, design and QC Team. Company has established relationships with major OEMs and Global Operators and holds approved supplier status with most of them.

CELLCOMM specializes in RF Passive and Active products and offers a wide range of product support for VHF, UHF, TETRA, CDMA, GSM, DCS, UMTS, Wi-Fi, WiMax and LTE.

Antennas

Cellcomm manufacture and supplies various types for antennas which are ideal for indoor and outdoor applications. Quality and innovative designs are the speciality of Cellcomm antennas. Beam width and polarizations can be customized based on customer demands. Antennas are available for specific technologies like TETRA, CDMA, GSM, WCDMA, Wi-Fi, WiMAX, LTE and for wideband as well.

Types of antennas include:

  • OMNI CEILING ANTENNA
  • OMNI ROD ANTENNA
  • PANEL ANTENNA
  • STRIP/FLAT ANTENNA
  • DUAL SIDED ANTENNA (BIDIRECTIONAL ANTENNA)
  • YAGI ANTENNA/LOG PERIODIC ANTENNA
  • DECORATIVE ANTENNAS
  • MIMO ANTENNAS
  • BTS ANTENNAS

Power Divider and Power Couplers

Power dividers (splitter) and Power couplers are passive devices used in the field of radio technology. Their applications include indoor and outdoor coverage enhancement solutions and distributed antenna system.

Power divider and Power couplers are designed with high quality in terms of minimum insertion loss, isolation, power handling and directivity to achieve better system performance. Power dividers and couplers are available in different range of frequencies starting from 380 MHz to 6GHz.

Power divider Power divider

  • 2 way splitter 6/10/15/20 dB strip type coupler
  • 3 way splitter 6/10/15/20 dB Cavity type coupler
  • 4 way splitter

Feeder and Connectors

The connectivity from the transmitter to antenna is through RF feeders and connectors, which is essential for radio communication. Design and quality is important in terms of minimum losses, flexibility and types of dielectric material. Cellcomm provides different types of RF feeders which can be used based on the application and frequencies.

  • RF BRAIDED COAXIAL CABLE: Cellcomm offers high quality RF braided coaxial cable suitable for coverage enhancement projects with low power repeater solution projects and low frequency applications. There are many types of braided types available based on the design, flexibility and the frequency requirement.
    RG 213, LMR -400, RG -11, RG-58, HDF 400
  • CORRUGATED CABLES: Cellcomm’s low loss corrugated cables are used in RF applications mainly in Distributed antenna system. Corrugated cables are with minimum insertion loss and can be handled easily with the recommended bending radius. There are different types of cable based on the loss, flexibility and dielectric material. Cable jackets can be customized based on the application as Flame retardant, Fire retardant or Low Smoke zero halogen types.
    ½” corrugated cable, 7/8” corrugated cable, 1- ¼” corrugated cable, 1-5/8” corrugated cable
  • LEAKY / RADIATING CABLES: Leaky or self-radiating cables are specially constructed in such a way that the feeder itself can radiate the signals and the self-radiating patterns change based on the size of the cable. The most ideal application for these types of cable are long distance tunnel coverage, lift coverage, deep mines or digging wells etc…
    ½” leaky coaxial cable, 7/8” leaky coaxial cable, 1- ¼” leaky coaxial cable, 1-5/8” leaky coaxial cable
  • Base Station Ancillary Products: Cellcomm offers different type of passive products which allows the operators to change the system or hardware configuration from BTS to Antenna or BTS to a DAS, based on the initial roll out design or optimization needed into improve the traffic or capacity. Cellcomm has various types of duplexers, combiners, Diplexers, Triplexers, Filters, Attenuators and Point of Interface (POI)

Point Of Interface

Point-of-Interface (POI) units combine multiple wireless communication systems to share a common distributed antenna system. POI consists of high quality combiners and duplex filters to achieve high system performance. POI is designed to use for all existing mobile technologies such as CDMA, GSM, WCDMA, Wi-Fi, & LTE. The POI equipment shall be one of the key components in the IBS project when it comes multi-operators using several different wireless communication systems. Key features of Cellcomm POI are very less insertion loss, good isolation between the bands and negligible passive intermodulation products.


Attenuators and Terminators

Attenuators and Terminators are passive devices used to control or terminate the RF radiating power. The products are available in different models and power handling capabilities based on the design requirements.


Combiners

Cellcomm range of combiners provide compact and cost effective solutions for combining different technologies in a common output port or multiple output ports. The special design provides excellent inter-band isolation, low insertion loss and good intermodulation performance. Combiners can be customized based on the requirements and are available in different combination of inputs, technologies, outputs and power handling capabilities.


Filters

Cellcomm designs a wide range of filters suitable for different application in radio frequency band between 800 to 2700 MHz. Latest design techniques provide compact design featuring quality and high performance filters. Filters can be customized to meet the specific band width requirements and can be silver plated to improve the intermod performance and reduce the insertion loss.

Repeaters

Repeaters are used to cover black spots of existing base stations or to extend the coverage at desired areas. Repeaters are easy to deploy and help in faster rollout. Repeaters help the mobile operator to optimize their network coverage area and the quality of service without changing the network parameters. Cellcomm provides customized site specific repeater solution for indoor and outdoor applications for all wireless technologies (TETRA, CDMA, GSM, DCS,, WCDMA, Wi-Fi, WiMAX & LTE).

Cellcomm Repeater comes with high quality SAW (surface Acoustic Wave) filters and linear amplifier which amplifies the desired frequency band or bands with superior out of band rejection. Cellcomm produces customized movable and tunable Repeaters for any frequency bandwidth for a single technology or multiple technologies in single/multi-sub bands. Cellcomm repeaters are equipped with user friendly control and monitoring device or software which helps the installation engineer to perform easy installation and configuration. Cellcomm also offers centralized monitoring software which can monitor and control the repeater parameters and alarms in real time and the same can be integrated to the higher end Network Monitoring System (NMS).


  • BROADBAND REPEATERS Cellcomm offers broadband repeaters which amplifies the whole frequencies in single or multiple technologies. Broad band repeaters are cost effective compared to band specific repeaters. These broadband repeaters are available in various RF output power suitable for indoor and outdoor applications. Key features of these repeaters are manual gain control, auto gain/power control and compact size.
  • PICO/SOHO BOOSTERS Pico Home Booster is a low power broad band repeater which is designed to provide coverage in smaller areas (Small Office Home Office). These are very compact devices with Manual Gain Control and Auto Gain Control functions which can help the installation engineer to configure the repeater based on the site conditions. Special optional features include built-in antenna, intelligent mode to protect the equipment from self-oscillation and silent mode to control uplink interference.

  • BAND SELECTIVE REPEATERS Band selective repeaters are designed to amplify specific frequency band with superior rejection of unwanted frequencies. These are available in single/multi band and multi-sub bands based on customer requirements. Cellcomm has a wide range of fixed, movable, movable and tunable (Flexible) band selective repeaters for various wireless technologies. Band or bandwidth selection can be field tunable based on the site requirement locally or remotely by the help of a control and monitoring device or software. Field movable and tunable function of a repeater is an advanced feature to reuse the repeater anywhere regardless of frequency or bandwidth within single/multiple technologies. Band selective repeater supports synthesized frequency hopping. Key features of these repeaters are gain/attenuation setting, RF parameters, alarm parameters which can be controlled and monitored locally and remotely. These kinds of repeaters are available in various RF output powers ranging from 10 dBm to 43 dBm.

  • CHANNEL SELECTIVE REPEATERS Channel selective repeaters are commonly used in urban or semi urban areas where the selectivity is important to reduce multiple BCCH interference. Cellcomm offers the channel selective repeater with multiple channels which can be tuned based on the site condition by using a control & monitoring interface or via OMT software. The repeaters are available in single technology or multiple technologies with different output power.Channel selective repeater is designed with linear amplifier and SAW filter (band width of carrier is based on the technology) for independent channels hence the output power per carrier is much higher compared to the normal band selective repeater.

  • HYBRID REPEATERS Hybrid repeaters are specially designed and featuring the combination of one channel selective modules and one or more band selective modules integrated in the same system. Hybrid repeater permits easy selection of desired BCCH in a tightly spaced RF environment with synthesized hopping.

    Hybrid repeater provides channel selection options for BCCH and band selection option for the TCH band or bands. The channel selection module provides the superior rejection in the unwanted BCCH.

    Key features of this repeater are manual gain control and auto gain control. RF parameter and alarm parameter of the repeater can be controlled or monitored through a control device or through OMT software locally and remotely.


  • INTERFERENCE CANCELLATION REPEATER: Interference cancellation repeaters are specially designed to cancel the real time multi-path signals using a digital signal process system. These repeaters are able to cancel 30 dB isolation, which allows using them for outdoor coverage solutions where donor and service antenna isolation is very less. Repeaters are available in various output power in single or multiple technologies. key features are manual gain control and auto gain control. RF and Alarm parameters can be controlled or monitored through a control device or thorough OMT software locally and remotely.

  • LINE AMPLIFIERS (LA) Line amplifier is a bidirectional amplifier which can be used to extend the coverage in IBS where the EiRP is very low. The main application of this product is to extend the BTS or repeater or improve the coverage in huge IBS sites. Line amplifier is simple in design, compact and cost effective solution to integrate new technology in the existing IBS. Cellcomm offers LA in single or multiple technologies in different output power based on the customer requirements.Cellcomm has newly introduced a special line amplifier which is suitable for combined in-building solutions for multi-operators. This specially designed MCPA based LA supports multiple carriers without degrading the quality of the signal. MCPA based LA is available in single and multiple technologies.

Digital Repeaters

Cellcomm Digital multi band repeater is designed by adopting SDR (software Define Radio) technology based on FPGA (Field Programmable Gate array) & DSP (digital Signal Processing) platform. FPGA & DSP platform enables the flexibility in frequency bands selection across the technologies (GSM900, GSM1800 & WCDMA2100) through software very easily at field without changing any hardware. Digital Multi-band repeater has designed with built in Modem to connect with a centralized Network Monitoring Software. Network Monitoring Software can control and monitor the repeaters operational features like gain, output power, frequency band allocations and real time alarms from the field.

Features:

  • Support Multi-band systems (GSM/DCS/UMTS/FD-LTE /TD-LTE) is available.
  • Frequency bands allocations can be changed by software locally or remotely.
  • Flexible Bandwidth, Tunable and Movable by Software
  • Maximum 6 sub bands per technology
  • Frequency bands can ON/OFF by soft switch
  • Better out of band rejection compared to Analog SAW technology
  • Built in Modem for remote control
  • Complies the ETSI & 3GPP2 Standards
  • High Working gain
  • Auto shut down and AGC based on threshold settings
  • Network Monitoring Software

Fiber Optic Repeaters

Fiber optic repeater consists of a master unit and remote unit. master unit receives RF signal from BTS and converts to optic signal and transmits to the remote unit through fiber cable. remote unit receives the optic signal, converts back to the original RF signal after amplification and transfers to the service antenna.

FOR is designed for both outdoor and indoor applications and the best suitable applications are for extending the coverage in large buildings (IBS), highways, tunnels and remote villages. FOR can be customized for single and multiple technologies.


Frequency Shifting Repeaters

FSR is an ideal solution that can address the network coverage in rural areas without increasing the BTS CAPEX and is cost effective compared to similar micro cell system. Installation is also much convenient and can be used in weak signal areas, highways, subways and remote villages. In those areas, FSR can replace the BTS to extend the coverage and maximize the capacity utilization of the remote base station.

Frequency shifting repeater consists of a master unit and remote unit. The master unit is directly/wirelessly coupled to the base station, converts the original/work frequency to a different shift/link frequency and then forward the signal to remote slave units over the air by their transmission antennas. Remote units use transmission antenna to receive shift /link frequency from the master units and convert it to the original/work frequency, amplify the signal and then forward the signal to mobile station inside the target area through serving antenna. The distance between the master & remote unit can go up to 18 ~ 20 Kms with in the normal cell range, however by enabling the extended cell range option in the cell sector FSR master to remote distance can go up to 50 ~ 55 Km if LOS(Line of Site) is clear.

Since the FSR is changing the frequency during transmission, the isolation requirement between donor & service antennas is not critical as in the case of conventional repeaters. So it is very easy for site survey and installation. The other advantage of FSR is that, we can use Omni directional antenna as a transmit antenna at the remote unit.


Outdoor RF Optimization Products

TOWER MOUNT BOOSTERS (TMB)

Tower mount booster is a bidirectional amplifier to extend the coverage of a BTS. TMB is installed at the tower top and the output power is directly connected to the antenna using a short jumper. High power linear amplifier which amplifies the downlink and the low noise amplifier serves to improve the sensitivity of BTS to balance the link with extended cell coverage in the downlink path. This can help the wireless operator to maximize their existing cell capacity by extending the cell coverage. TMB also can be an ideal solution in the initial rollouts which can decrease the number of BTS to reduce/delay the CAPEX and for faster roll out. In case of a TMB failure, the by-pass function of the TMB helps to bypass the base station signals.

Cellcomm TMB’s are available with high output power like 20 & 40 Watts in single or dual technologies. The system is designed for outdoor with compact profile which helps the installation much easier. TMB can be controlled locally or remotely by the help of OMT software or centralized OMC software. TMB also has got an external alarm option to integrate with BTS alarms which can be monitored from operator’s OMC.

MCPA high Power Booster consists of MCPA in the downlink to extend the BTS coverage and low noise amplifier in the uplink path to balance the link with extended cell coverage. MCPA is specially designed and capable to amplify the multiple numbers of carriers without degrading the network performance. Feed forward technology and pre-distortions circuit provide highly linear output which can achieve -65 to-70dBc IMD. IMD suppression is most important when it comes to multiple carriers and high output power.

MCPA has a built-in bypass circuit which in the event of any fault in the equipment triggers the bypass function without affecting the existing cell coverage. MCPA can be controlled and monitored locally and remotely through control software. MCPA also has an external alarm option to integrate with BTS alarms which can be monitored from operator’s OMC. MCPA’s are available in tower top and tower bottom model based on the application, output power, number of technologies and number of sectors.

  • SINGLE BAND MCPA
  • DUAL BAND MCPA
  • 2/3 SECTOR MCPA
  • LTE

TOWER MOUNT AMPLIFIERS (TMA)

Tower mount Amplifier is a directional amplifier to extend the uplink coverage of BTS. The unit is installed near the antenna at the tower top to improve the receiving sensitivity of the base station. The usage of TMA will help to improve the call success, drop call rates, call quality and extended handset battery life. TMA is designed to be installed in outdoor towers, walls or poles close to the antenna. By-pass circuit will be activated when DC power supply is switched off or when there is a fault in the system.

  • SIMPLEX TMA
  • DUPLEX TMA
  • DUAL DUPLEX TMA
  • CDMA/GSM/DCS/WCDMA