Scope
Receiving and transmitting paths of high-frequency devices (radars, communication systems, etc.)
Principle of Operation
The SAW filter features an input and output. The source signal is supplied to the input, the filter uses it to cut out a certain frequency band, after the filtered signal is provided to the output. The filtration is performed by converting an electrical signal into an acoustic wave and after passing the filter elements back into an electrical signal.
Benefits
- Low overall dimensions (2-3 orders of magnitude smaller compared to electromagnetic analogues)
- High temperature stability
- Wide operating frequency range (1.0 MHz – 3 GHz)
- Low insertion loss of 1.0-3.0 dB at bandwidths 1-3%
- High reliability
- Repeatability of parameters and low cost in serial production
Specifications
|
Pass bandwidth rated frequency under normal environmental conditions (F0)1), MHz |
868, 915 |
|
Pass bandwidth at the level of -3 dB, MHz |
from 25 to 352) |
|
Insertion loss at rated frequency, dB, not more than |
3 |
|
Bandpass flatness in guaranteed bandwidth, dB, not more than |
1 |
|
Pass bandwidth at the level of -35 dB (BW-35), MHz, not more than |
70 |
|
Guaranteed attenuation in the frequency range: from 100 MHz to F0 – BW-35/2 and from F0 + BW-35/2 to 1500 MHz, dB, not less than |
35 |
|
Group delay time on the frequency F0 , ns |
35±15 |
|
VSWR of input and output, not more than |
2 |
|
Operating temperature range, °C |
from -40 to +70 |
|
Boх type |
QLCC 6/8-1 |
|
Dimensions, mm |
5х5х2 |
|
Weight, not more than, g |
0,11 |
2) Different bandwidth values can be implemented depending on the filter rated frequency.