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Telecom

Vedang has developed products for wireless coverage & capacity enhancement, Wireless Distribution and Wireless Quality Assurance.

Coverage Enhancement

Repeaters / Inline Amplifiers (LTE / 3G / 2G/CDMA)

Repeaters are available for LTE, 3G and 2G technologies for Single band and Dual band.

All the repeaters have:

Sleek, light weightand cost effective

Automatic Level Control (ALC) – no self-oscillation

Best mix of gain and quality (Optimal gain setting to ensure no deterioration in quality)

Easy to Install

Option for Local and Remote Management (NMS)

Single Band RF Repeater

The single band RF repeater works only on one frequency band.

It works as a relay between the BTS and mobile device. It picks up the signal from the BTS via the ‘Donor’ antenna, linearly amplifies the signal and retransmits it via the ‘Coverage’ antenna (or In-building Distributed Antenna System) to the weak or blind signal area. In the reverse direction, the mobile device signal is also amplified and retransmitted in the direction of the BTS.

Repeater CDMA

Frequency range

UPLINK
:
824 - 849 MHz
DNLINK
:
869 - 894 MHz

Output Power

10dBm / 15dBm/ 19dBm / 23dBm / 27dBm / 33dBm / 40dBm

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Repeater GSM

Frequency range

UPLINK
:
890 - 915 MHz
DNLINK
:
935 - 960 MHz

Output Power

10dBm / 15dBm/ 19dBm / 23dBm / 27dBm / 33dBm / 40dBm

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Repeater E-GSM

Frequency range

UPLINK
:
880 - 915 MHz
DNLINK
:
925 - 960 MHz

Output Power

10dBm / 15dBm/ 19dBm / 23dBm / 27dBm / 33dBm / 40dBm

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Repeater DCS

Frequency range

UPLINK
:
1710 - 1785 MHz
DNLINK
:
1805 - 1880 MHz

Output Power

10dBm / 15dBm/ 19dBm / 23dBm / 27dBm / 33dBm / 40dBm

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Repeater UMTS

Frequency range

UPLINK
:
1920 - 1980 MHz
DNLINK
:
2110 - 2170 MHz

Output Power

10dBm / 15dBm/ 19dBm / 23dBm / 27dBm / 33dBm / 40dBm

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Dual band RF Repeater

The dual band RF repeater works on two frequency bands simultaneously. It transparently amplifies the frequencies in the two bands of interest individually between the BTS and the mobile devices.

The following models are available. Vedang can design dual or more band repeaters as per the specific need of the customer.

Repeater GSM-DCS

Frequency range

GSM-UPLINK
:
890 - 915MHz
GSM-DNLINK
:
935 - 960 MHz
DCS-UPLINK
:
1710 - 1785MHz
DCS-DNLINK
:
1805 - 1880 MHz

Output Power & Consumption

19dBm = 40W; 33dBm = 70W

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Tri band RF Repeater

The Tri band RF repeater works on three frequency bands simultaneously. It transparently amplifies the frequencies in the three bands of interest individually between the BTS and the mobile devices.

The following models are available. Vedang can design dual or more band repeaters as per the specific need of the customer.

Repeater GSM-DCS-UMTS

Frequency range

GSM-UPLINK
:
890 - 915MHz
GSM-DNLINK
:
935 - 960 MHz
DCS-UPLINK
:
1710 - 1785MHz
DCS-DNLINK
:
1805 - 1880 MHz
UMTS-UPLINK
:
1920 - 1980MHz
UMTS-DNLINK
:
2110 - 2170 MHz

Output Power

19dBm = 60W; 33dBm = 110W

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Tappers/Splitters

Tappers

Tappers, also known as Signal Samplers, provide flat coupling of one signal path to another Tappers have the benefit of easily realizable broad bandwidths, are virtually indestructible and generally are lower priced.

Low Loss Tapper –7 dB [Model No: VRTA – 1500 – 7]

Frequency range
:
800 - 2500 MHz

Insertion Loss

Port 1
:
<1.20 dB
Port 2 (coupling Port)
:
7 dB
VSWR (all Ports)
:
<1.5
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Model No: VRTA – 1500 – 7

Low Loss Tapper –10 dB [Model No: VRTA – 1500 – 10]

Frequency range
:
800 - 2500 MHz

Insertion Loss

Port 1
:
<0. 6dB
Port 2 (coupling Port)
:
10.4 dB
VSWR (all Ports)
:
<1.5
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Model No: VRTA – 1500 – 10

Low Loss Tapper –15 dB [Model No: VRTA – 1500 – 15]

Frequency range
:
800 - 2500 MHz

Insertion Loss

Port 1
:
<0.5 dB
Port 2 (coupling Port)
:
15 dB
VSWR (all Ports)
:
<1.5
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Model No: VRTA – 1500 – 15

Splitters

Low Loss CavityPower Splitter – 2 Way [Model No: VRPD – 1500 – 2]

Frequency range
:
800 - 2500 MHz
Insertion Loss
:
<0.3 dB
VSWR (all Ports)
:
<1.25
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Model No: VRPD – 1500 – 2

Low Loss CavityPower Splitter – 3 Way [Model No: VRPD – 1500 – 3]

Frequency range
:
800 - 2500 MHz
Insertion Loss
:
<0.5 dB
VSWR (all Ports)
:
<1.25
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Model No: VRPD – 1500 – 3

Low Loss CavityPower Splitter – 4 Way [Model No: VRPD – 1500 – 4]

Frequency range
:
800 - 2500 MHz
Insertion Loss
:
<0.7 dB
VSWR (all Ports)
:
<1.3
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Model No: VRPD – 1500 – 4

Diplexer / Triplexer/ Combiners

Diplexer

The diplexers combine two different frequency bands and outputs to a common antenna. Diplexers are available in both broad and narrow bands. Focus is on providing minimal loss and low PIM.

Diplexer - DCS/UMTS [Model No: VRDP-1821-05]

Frequency range

Pass Band I
:
1710 – 1880 MHz
Pass Band II
:
1920 – 2170 MHz

Insertion Loss

Pass Band I
:
0.25 dB (Max)
Pass Band II
:
0.35 dB (Max)

Model No: VRDP-1821-05

DIPLEXER – DCS-LTE [Model No: VRDP-1823-05]

Frequency range

Pass Band I
:
1710 – 1880 MHz
Pass Band II
:
2300 – 2400 MHz

Insertion Loss

Pass Band I
:
0.35 dB (Max)
Pass Band II
:
0.35 dB (Max)
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Model No: VRDP-1823-05

DIPLEXER – DCS/UMTS-LTE [Model No: VRDP-2023-05]

Frequency range

Pass Band I
:
1710 – 2170 MHz
Pass Band II
:
2300 – 2400 MHz

Insertion Loss

Pass Band I
:
0.35 dB (Max)
Pass Band II
:
0.35 dB (Max)
DCS_UMTS_LTE_Diplexer

Model No: VRDP-2023-05

DIPLEXER – GSM-LTE [Model No: VRDP-0923-05]

Frequency range

Pass Band I
:
806 – 960 MHz
Pass Band II
:
2300 – 2400 MHz

Insertion Loss

Pass Band I
:
0.20 dB (Max)
Pass Band II
:
0.35 dB (Max)
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Model No:VRDP-0923-05

DIPLEXER – CDMA/GSM-DCS/UMTS [Model No: VRDP-0822-05]

Frequency range

Pass Band I
:
806 – 960 MHz
Pass Band II
:
1710 – 2170 MHz

Insertion Loss

Pass Band I
:
0.20 dB (Max)
Pass Band II
:
0.20 dB (Max)
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Model No: VRDP-0822-05

Triplexers

The triplexers combine three different frequency bands and outputs to a common antenna.

TRIPLEXER – GSM-DCS-LTE [Model No: VRTP-091823]

Frequency range

Pass Band I
:
806 – 960 MHz
Pass Band II
:
1710 – 1880 MHz
Pass Band III
:
2300 – 2400 MHz

Insertion Loss

Pass Band I
:
0.2 dB (Max)
Pass Band II
:
0.35dB (Max)
Pass Band III
:
0.35dB (Max)
Triplexer

Model No: VRTP-091823

TRIPLEXER – GSM-DCS-UMTS [Model No: VRTP-091821]

Frequency range

Pass Band I
:
806 – 960 MHz
Pass Band II
:
1710 – 1880 MHz
Pass Band III
:
1920 – 2170 MHz

Insertion Loss

Pass Band I
:
0.2 dB (Max)
Pass Band II
:
0.35dB (Max)
Pass Band III
:
0.35dB (Max)

Model No: VRTP-091821

Combiners

Splitters are used to divide one signal to feed two or more inputs. Vedang has an excellent range of Low Loss Splitters in Coaxial and Planar Implementations.

In Band Combiner 2:1 806 – 960 MHz[Model No:VRIC – 0880]

Frequency Range
:
806 - 960 MHz

Insertion Loss

Port ‘a’ – Port ‘c’
:
3.10dB (Max)
Port ‘b’ – Port ‘c’
:
3.10dB (Max)
Port ‘a’ – Port ‘b’
:
32dB (typ) , 28dB (Min)
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Model No: VRIC – 0880

In Phase Combiner 2:1 806 – 960 MHz[Model No:VRIC – 0880 – 2]

Frequency Range
:
806 - 960 MHz

Insertion Loss

Port ‘a’ – Port ‘c’
:
3.35dB (Max)
Port ‘b’ – Port ‘c’
:
3.35dB (Max)
Port ‘a’ – Port ‘b’
:
>22dB
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Model No: VRIC – 0880 – 2

In Phase Combiner 2:1 1710 – 2170 MHz[Model No:VRIC – 1940 – 2]

Frequency Range
:
1710 - 1940 MHz

Insertion Loss

Port ‘a’ – Port ‘c’
:
3.35dB (Max)
Port ‘b’ – Port ‘c’
:
3.35dB (Max)
Port ‘a’ – Port ‘b’
:
>22dB
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Model No:VRIC – 1940 – 2

Quadrature Combiner 2:1 800 – 2200 MHz[Model No:: VRQC – 1500 – 2]

Frequency Range
:
800 - 2200 MHz

Insertion Loss

Port ‘a’ – Port ‘c’
:
3.50dB (Max)
Port ‘b’ – Port ‘c’
:
3.50dB (Max)
Port ‘a’ – Port ‘b’
:
>20dB
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Model No:: VRQC – 1500 – 2

Quadrature Combiner 2:2 1700 – 1900 MHz[Model No:: AVQC – 1800 – 4]

Frequency Range
:
1700 - 1900 MHz

Insertion Loss

Port ‘a’ – Port ‘c’
:
3.10 ± 0.2dB
Port ‘a’ – Port ‘d’
:
3.10 ± 0.2dB
Port ‘b’ – Port ‘c’
:
3.10 ± 0.2dB
Port ‘b’ – Port ‘d’
:
3.10 ± 0.2dB
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Model No:: AVQC – 1800 – 4

Filters

Vedang’s filters are designed to suppress harmonics and out of band noise and interference, to improve signal quality mobile communication.

Filters are available for CDMA, 2G, 3G & LTE technologies.

Filters

Band Pass Filter[CDMA Reject)[Model No: VR-BF-922-D75]

Pass Band
:
885 – 960 MHz

Insertion Loss/Rejection

885-915 MHz
:
0.65 dB (Typ)
925-960 MH
:
0.45 dB (Typ)
@878 MHz
:
45 dB (Typ)
< 877 MH
:
50 dB (Typ)
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Model No: VR-BF-922-D75

Band Pass Filter[CDMA Reject][Model No: VR-BF-925-C70]

Pass Band
:
890 – 960 MHz

Insertion Loss/Rejection

@890 MHz
:
1.95 dB (Typ)
892-960 MH
:
0.60 dB (Typ)
@887 MHz
:
35 dB (Typ)
< 885 MH
:
50 dB (Typ)
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Model No: VR-BF-925-C70

Band Pass Filter[CDMA Reject][Model No: VR-BF-928-C64]

Pass Band
:
896 – 960 MHz

Insertion Loss/Rejection

@896 MHz
:
0.75 dB (Typ)
897-960 MHz
:
0.40 dB (Typ)
@889.7 MHz
:
35 dB (Typ)
< 885 MH
:
55 dB (Typ)
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Model No: VR-BF-928-C64

Band Pass Filter[GSM Killer][Model No: VR-BF-851-C54]

Pass Band
:
824 – 878 MHz

Insertion Loss/Rejection

878 MHz
:
2.0 dB (Typ)
824-870 MH
:
0.65 dB (Typ)
@880.2 MHz
:
35 dB (Typ)
> 882 MH
:
50 dB (Typ)
GSMReject_Filter

Model No: VR-BF-851-C54

Band Pass Filter[GSM Killer][Model No: VR-BF-856-D64]

Pass Band
:
824 – 888 MHz

Insertion Loss/Rejection

888 MHz
:
2.0 dB (Typ)
824-869 MH
:
0.65 dB (Typ)
@890 MHz
:
30 dB (Typ)
> 892 MH
:
50 dB (Typ)
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Model No: VR-BF-856-D64

Test & Measurement

Transmitter

High Power Transmitter is used for coverage assessment and propogation modelling. Vedang offers Transmitter in all technology bands viz, CDMA, GSM 900, DCS 1800, UMTS & LTE .

High Power Transmitter

Frequency range

CDMA
:
869-894 MHz
GSM
:
935-960 MHz
DCS
:
1805-1880 MHz
UMTS
:
2110-2170 MHz

Output Power

+23dBm to +43dBm

Transmitter

Handheld Transmitter is an ideal tool for coverage planning for In-Building and covers all the available technology bands viz. CDMA, EGSM, GSM 900, DCS 1800, UMTS & LTE .

Handheld Transmitter

Frequency range

CDMA
:
869-894 MHz
GSM
:
935-960 MHz
DCS
:
1805-1880 MHz
UMTS
:
2110-2170 MHz

Output Power

-5dBm to +13dBm

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Scan Receiver

Scan Receiver is used with CW Transmitter for propogation modelling in green field networks as well as reconfirmation of model after demographic changes in the area.

Custom Solution

Vedang has a highly efficient team of RF architects and engineers, DSP and FPGA engineers and Telecom domain knowledge experts. We can develop customized solutions for the newer and older generation of Telecom Technologies.