Products > Bandpass Filter Application > NB-IoT Using Filter
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NB-IoT Using Filter


NB-IoT Using Filter

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 NB-IoT means the technology standard of Narrow Band -Internet of Things, designed for the Internet of Things (IoT) and is one of a range of Mobile IoT (MIoT) technologies standardized by the 3rd Generation Partnership Project (3GPP).

According to the market forecasting, there will be over 6.4 billion devices and equipments

connecting and transferring data by LPWAN (Low Power Wide Area Network) system, which depends on the technology standard of Narrow Band -Internet of Things.

Based on the future demand for NB-IoT application, Temwell established our standard
bandpass filter with the request of low BW, Low IL and high Attenuation value as well. As bellow Frequency band of 146M, 157M,160M,172M,460M,700M,868M,915M, we prepare 2 pole, 3pole and 4 pole series, which contain different Attenuation performance to you for reference.

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Specification range:
Frequency: 146M, 157M,160M,172M,460M,700M,868M,915M
Bandwidth: 2~5MHz

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Filter Dimension:

4 Pole Helical Filter - TF (22.4x5.6x12.5) / TFW (22.4x5.6x8.6)

3 Pole Helical Filter - TT (16.8x5.6x12.5) / TTW (16.8x5.6x8.6)

2 Pole Helical Filter - TD (11.2x5.6x12.5) / TDW (11.2x5.6x8.6)

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RF Bandpass Filter

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A. 2 POLE Helical Bandpass Filter

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7H2 TD Series
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TEMWELL P/N

Fc (MHz) B.W (MHz) I.L. (dB) Attenuation
1 TD62713D-146M 146 3 3.5 FC-30M 30db, Fc+30M 35dB
2 TD62714B-157M 157 2 3.5 FC-10M 16db, Fc+10M 21dB
3 TD62715B-160M 160 2 3.5 FC-10M 16db, Fc+10M 21dB
4 TD62716A-172M 172 2 3.5 FC-10M 14db, Fc+10M 18dB
5 TD62717A-460M 460 2 7.0 FC-30M 39db, Fc+30M 33dB
6 TD62718A-700M 700 2 10.0 FC-30M 35db, Fc+30M 30dB
7 TD62719C-868M 868 5 7.0 FC-50M 30db, Fc+50M 25dB
8 TD62720B-915M 915 5 7.0 FC-50M 40db, Fc+50M 33dB

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5W2 TDW Series
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TEMWELL P/N

Fc (MHz) B.W (MHz) I.L. (dB) Attenuation
1 TDW21043B-460M 146 2 6.5 FC-50M 35db, Fc+50M 41dB
2 TDW21044B-700M 700 2 7.0 FC-50M 41db, Fc+50M 31dB
3 TDW21045B-868M 868 5 7.0 FC-50M 32db, Fc+50M 28dB
4 TDW21046B-915M 915 5 7.0 FC-50M 33db, Fc+50M 27dB

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B. 3 POLE Helical Bandpass Filter 
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7H3 TT Series
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TEMWELL P/N

Fc (MHz) B.W (MHz) I.L. (dB) Attenuation
1 TT63721B-146M 146 3 4.0 FC-30M 40db, Fc+30M 45dB
2 TT63722B-157M 157 2 4.0 FC-10M 26db, Fc+10M 31dB
3 TT63723B-160M 160 2 4.0 FC-10M 26db, Fc+10M 31dB
4 TT63724A-172M 172 2 4.0 FC-10M 24db, Fc+10M 28dB
5 TT63725A-460M 460 2 7.5 FC-30M 49db, Fc+30M 43dB
6 TT63726A-700M 700 2 10.5 FC-30M 45db, Fc+30M 40dB
7 TT63727A-868M 868 5 7.5 FC-50M 40db, Fc+50M 35dB
8 TT63728A-915M 915 5 7.5 FC-50M 50db, Fc+50M 43dB

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5W3 TTW Series
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TEMWELL P/N

Fc (MHz) B.W (MHz) I.L. (dB) Attenuation
1 TTW31049B-460M 460 2 7.0 FC-50M 45db, Fc+50M 51dB
2 TTW31050B-700M 700 2 7.5 FC-50M 51db, Fc+50M 41dB
3 TTW31051B-868M 868 5 7.5 FC-50M 42db, Fc+50M 38dB
4 TTW31052B-915M 915 5 7.5 FC-50M 43db, Fc+50M 37dB

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C. 4 POLE Helical Bandpass Filter
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7H4 TF Series
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TEMWELL P/N

Fc (MHz) B.W (MHz) I.L. (dB) Attenuation
1 TF64729B-146M 146 3 4.5 FC-30M 50db, Fc+30M 55dB
2 TF64730B-157M 157 2 4.5 FC-10M 36db, Fc+10M 41dB
3 TF64731B-160M 160 2 4.5 FC-10M 36db, Fc+10M 41dB
4 TF64732B-172M 172 2 4.5 FC-10M 34db, Fc+10M 38dB
5 TF64733B-460M 460 2 8.0 FC-30M 59db, Fc+30M 53dB
6 TF64734B-700M 700 2 11.0 FC-30M 55db, Fc+30M 50dB
7 TF64735B-868M 868 5 8.0 FC-50M 50db, Fc+50M 45dB
8 TF64736B-915M 915 5 8.0 FC-50M 60db, Fc+50M 53dB

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5W4 TFW Series
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TEMWELL P/N

Fc (MHz) B.W (MHz) I.L. (dB) Attenuation
1 TFW41055B-460M 460 2 7.5 FC-50M 55db, Fc+50M 61dB
2 TFW41056B-700M 700 2 8.0 FC-50M 61db, Fc+50M 51dB
3 TFW41057B-868M 868 5 8.0 FC-50M 52db, Fc+50M 48dB
4 TFW41058B-915M 915 5 8.0 FC-50M 53db, Fc+50M 47dB

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Program II: Website Standard Filter online in stock

 

  Temwell Website Standard Filter has over 800 finished filter in stock and provides quickly supply

   RF Bandpass Filter in 72 hours.

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Temwell 2 pole (TD,TDS,TDW,TDR) Bandpass Helical Filter 50ohm
Temwell 3 pole (TT,TTS,TTW,TTR) Bandpass Helical Filter 50ohm
Temwell 4 pole (TF,TFS,TFW,TFR) Bandpass Helical Filter 50ohm
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The Expert of the RF Band Pass Filter design& manufacturer, RF Diplexer &Duplexer, RF 50 ohm& 75ohm Filter, RF Tunable Filter


Temwell Corporation / Temstron Co., Ltd.

   8F-1,No.51, Sec.1,Min Sheng E. Rd.,Taipei, Taiwan    Tel:886-2-25652500 ( 7 Line )    Fax: 886-2-25515250  /  886-2-25652287    

E-Mail : sales@temwell.com.tw

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