 |
|
 |
|
| Band Pass Filters |
|
| AMPL, broadband and narrowband Band Pass Filters are available in the frequency upto 18GHz. AMPL has considerable expertise in development of Band Pass Filters for GSM, CDMA, DCS etc, mobile / cellular communication frequency bands. In addition to these filters a range of lumped element band pass filters are available from 20MHz to 1GHz frequency range. Through the use of appropriate cross couplings transmission zeros can be introduced on either side of passband to improve selectivity. Various band pass Filter configurations used are :
|
|
Combline
Interdigital
Printed (Suspended Substrate Stripline, Microstrip)
Helical
High 'Q' Cavity Filters
Lumped |
|
| Band Pass Filters with broad pass bands can be formed by cascading individual high pass and low pass filters. By cascading additional low pass filters with band pass filter, wide stop bands can be achieved. For narrow pass bands the most appropriate technology, depending upon factors such as loss, power handling, size & weight is chosen. |
| |
Note: You can send your own specification sheet by fill up the form below (Which is downloadable) and send it to us b fax
Click Here to download the sheet |
| |
Typical Examples for Band Pass Filters are as in given table: |
| |
a) Filters for GSM, CDMA etc. Applications:
| Model No. |
Pass Band Freq. (MHz) |
Insertion Loss (max.) |
Return Loss (min.) |
Attenuation Characteristics |
BP861RE1 |
824 - 888 |
1.2dB |
18dB |
-20dB(min)@890-935MHz |
BP901HM2 |
890 - 915 |
4.5dB |
16dB |
-60dB(min)@880MHz |
BP881REL |
869 - 885 |
2.3dB |
14dB |
-60dB(min)@DC-849MHz
-60dB(min)@890-1950MHz |
BP901NK2 |
890 - 960 |
1.5dB |
19dB |
-25dB(min)@870-884MHz
-36dB (min)upto 1275MHz |
BP951SKY |
942 -- 948 |
5.0dB |
14dB |
-30 dB(min) @ 941MHz |
| BP871BT1 |
869 - 880.5 |
1.5dB (@Fc) 3.5dB(Passband) |
18dB |
-22dB(min)@867.02MHz
-28dB(min)@882.48MHz
-68dB(min)@890MHz
-95dB(min)@836 MHz |
|
| |
| b) Filters using Lumped Element Configuration: |
| Model No. |
Pass Band Freq. (MHz) |
Insertion Loss (max.) |
1dB Band-width |
Return Loss (min.) |
Attenuation Characteristics |
Remarks |
BP550BE1 |
50 - 60 |
2dB |
10MHz |
14dB |
40MHz, 70MHz |
Narrow band |
BP750BE1 |
70-80 |
2.5dB |
10MHz |
14dB |
60MHz, 90MHz |
Narrow band |
BP950BE1 |
90-100 |
2.5dB |
10MHz |
14dB |
80MHz, 110MHz |
Narrow band |
BP281BE2 |
250 - 310 |
1.8dB |
60MHz |
14dB |
220MHz, 340MHz |
Broadband |
BP691BE1 |
625 - 750 |
2dB |
125MHz |
14dB |
575MHz, 810MHz |
Broadband |
BP751BE2 |
500 - 1000 |
1.5dB |
500MHz |
14dB |
300MHz, 1200MHz |
Broadband |
|
| |
| c) Others: |
| Model No. |
Pass Band Freq. (MHz) |
Insertion Loss (max.) |
Return Loss (min.) |
Attenuation Characteristics |
BP502DL2 |
2000-8000 |
1.5dB |
13dB |
-50dB(min)@ DC-1.8GHz
-50dB (min.)@8.8-18GHz |
BP153BE1 |
12000 - 18000 |
0.9dB |
13dB |
-60dB @ >19.8GHz
-60dB @ DC - 10.5GHz |
CR801PR2 |
770 - 840 |
2.0dB |
20dB |
-45dB @ fc ± 20
-70dB @ fc ± 30
-80dB @ fc ± 40 |
|
|
|
 |
|
|
|
|
|
