Bessel

KT Series

Frequency Range from 500 Hz to 200 MHz

Bessel Bandpass Filters exhibit a constant time delay through the filters passband. Available packages include PCB, radial RF pins, SMT, SMA and BNC connectorized cases. These are available for RF and microwave applications including data acquisition, receivers and transmitters. Specify any center frequency from 500 Hz to 200 MHz.

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Center Frequency (MHz)
Bandwidth (MHz)
Package Type
Brand
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Part Number
Center Frequency
(MHz)
Bandwidth
(MHz)
Insertion Loss
VSWR
Power
Package Type
0.08
0.04
< -12
1.50:1
0.25
0.05
1.50:1
0.38
0.076
1.50:1
0.5
0.1
1.50:1
0.6
0.12
1.50:1
0.63
0.126
1.50:1
1
0.2
-4
1.50:1
1.25
0.25
-4
1.50:1
2
0.4
1.50:1
2.5
0.5
1.50:1
20
0.6
-5
1.50:1
Connectorized
3
0.6
1.50:1
24.25
0.7275
-8.2
1.433:1
Connectorized
4
0.8
1.50:1
5
1
1.50:1
6.25
1.25
1.50:1
42
1.26
-5
1.433:1
Connectorized
7.5
1.5
1.50:1
8
1.6
1.50:1
9
1.8
1.50:1
10
2
1.50:1
38
2.2
1.50:1
12
2.4
1.50:1
100
3
< -12
1.50:1
Connectorized
20
4
1.50:1
24
4.8
1.50:1
25
5
1.50:1
80
6.4
< -12
1.50:1
Connectorized
40
8
1.50:1
114
9.12
< -12
1.50:1
Connectorized
135
10.8
< -12
1.50:1
Connectorized
80
16
1.50:1
20
20
< -12
1.50:1
Series
Number
Number of
Pole Pairs
(Elements)
Bandwidth
Selection
-3dBc
KT22 (4)3% to 10% fo
KT33 (6)3% to 10% fo
KT44 (8)3% to 10% fo
KT55 (10)3% to 10% fo
KT66 (12)3% to 10% fo
Notes:
  • Operating Temperature Range:
         0°C to +70°C
  • VSWR at fo: 1.5:1 Typical
  • Input Power: 20 mW
Part Number Derivation:
KT4*(R)-144K-4.32K-50-3264
123456

7

        1. Series, KT
        2. Number of poles, 4
        3. “R” RoHS compliant. Allow for longer lead time.
        4. The Notch Frequency, fo
        5. The -3dBc passband bandwidth. It may also be specified as a percentage of fo. Thus, instead of 4.32 kHz, use 3P.
        6. Terminations
        7. Case selection from the case selection guide.
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For assistance please call 1-716-532-2234 or email us at tte@tte.com

MADE IN USA

All TTE products are Made in the USA. Most are delivered within 2-3 weeks. Expedited lead times of 3-5 days are available on many products.

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TTE offers you several ways to obtain a filter specification quote. The easiest way is to use TTE’s Speed Quote below and submit it directly to TTE.