Tfs140F.doc

Version 1.5

08.01.2001

VI TELEFILTER

Filter Specification

TFS 140F - 1/5

VI TELEFILTER

Vectron International, Inc.

Potsdamer Straße 18

267 Lowell Road

D 14 513 TELTOW / Germany

Hudson, NH 03051 / USA

Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30

Tel: (603) 598-0070 Fax: (603) 598-0075

E-Mail: tft@telefilter.com

E-Mail: vti@vtinh.com

VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed

as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.

1. Measurement condition

25 °C

Input power level:

0 dBm.

Terminating impedances at fc:

for input:

740

Ω

for output:

700

Ω

Q-value of matching elements:

≥ 50

2. Characteristics

Remark:

Reference level for the relative attenuation arel of the TFS 140F is the minimum of the pass band attenuation amin. The minimum of the pass

band attenuation amin is defined as the insertion loss ae. The reference frequency fc is the arithmetic mean value of the upper and lower

reference frequency fc and the frequency response of the filter in the operating temperature range. The frequency shift of the filter in the operating

temperature range is not included in the production tolerance scheme

Data

typ. value

tolerance / limit

Insertion loss (Reference level)

ae

18,5...19 dB

max.

20 dB

Centre frequency

140,01 MHz

140 ± 0,06 MHz

Amplitude ripple (p-p):

0,5...0,7 dB

max.

1 dB

Bandwidth

at ambient temperature:

1 dB - band width

2,87 MHz

min. 2,70 MHz

3 dB - band width

3,23 MHz

min. 3,20 MHz

40 dB - band width

4,62 MHz

max. 4,70 MHz

45 dB - band width

4,69 MHz

Relative attenuation

arel

............

0,6 dB

max.

1 dB

.....

MHz

2,5 dB

max.

3 dB

.....

6

MHz

45...50 dB

min.

40 dB

MHz

.....

MHz

50....70 dB

min.

45 dB

Group delay ( mean value in PB ):

1,69 µs

max. 2,5 µs

Group delay ripple in PB (p-p):

100 ns

max. 200 ns

Deviation from linear phase in PB (p-p):

4° ( r.m.s. 0,9° )

max.

5°

Input

VSWR (S11) in PB :

1,6 : 1

max. 2 : 1

Output VSWR (S22) in PB :

1,6 : 1

max. 2 : 1

Triple transit attenuation compared to main signal

41...42 dB

min.

40 dB

Crosstalk

50...60 dB

Substrate material

Quartz

28° C

-0,04

ppm/K²

Frequency deviation of fc over temperature: * )

Operating temperature range

0 °C ... + 70 °C

Storage temperature range

- 40 °C ... + 85 °C

Generated:

Dunzow W.P.

Checked/Approved:

Dr. Bert Wall