Tel : +44 118 979 1238
Fax : +44 118 979 1283
Email: info@actcrystals.com
Characteristics of Channel 2
Characteristic
Min.
Typ.
Max.
Units
Center Frequency
f
478.50
479.50
480.50
MHz
c
Insertion attenuation
(Reference level for the following data)
479.50 MHz
α
--
--
25.0
36.0
26.5
--
dB
MHz
Pass bandwidth
αrel≤3dB
B3dB
Relative attenuation
αrel
--
--
34.0
30.0
3.5
2.3
39.0
36.0
4.8
4.8
--
dB
dB
dB
dB
461.50 MHz
497.50 MHz
430.00 ….449.00 MHz
510.00 … 530.00 MHz
Lower sidelobe
Upper sidelobe
--
Reflected wave signal suppression
0.13μs … 2.0μs after main pulse
40.0
45.0
--
dB
Amplitude ripple (p-p)
Group delay ripple (p-p)
468.50 … 490.50 MHz
461.50 … 497.50 MHz
Δ α
--
--
--
0.6
12
1.2
18
--
dB
ns
Δt
-86
ppm/K
Temperature coefficient of frequency
TCf
iCAUTION: Electrostatic Sensitive Device. Observe precautions for handling!
1. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture that is
connected to a 50Ω test system with VSWR≤1.2: 1. The test fixture L and C are adjusted for minimum insertion
loss at the filter centre frequency, fC. Note that insertion loss, bandwidth, and passband shape are dependent on
the impedance matching component values and quality.
2. Unless noted otherwise, specifications apply over the entire specified operating temperature range.
3. The specifications of this device are based on the test circuit shown above and subject to change or
obsolescence without notice.
4. All equipment designs utilizing this product must be approved by the appropriate government agency prior to
manufacture or sale.
5. Our liability is only assumed for the Surface Acoustic Wave (SAW) component(s) per se, not for
applications,processes and circuits implemented within components or assemblies.
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
Issue : 1 C1
Date : SEPT 04
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
http://www.actcrystals.com
ACT [ ADVANCED CRYSTAL TECHNOLOGY ]
