B4235 datasheet(7/11 Pages) EPCOS

7 / 11 page

February 10, 2009

B4235

942.5/1842.5 MHz

SAW Components

SAW RF filter

Data sheet

Please read

cautions and warnings and

important notes at the end of this document.

Characteristics Filter 2 (GSM1800)

Temperature range for specification:

= –20 ˚C to +75 ˚C

Terminating source impedance:

ZS =50 Ω (unbalanced)

Terminating load impedance:

ZL = 150 Ω (balanced) || 12 nH

min.

typ.

@ 25 ˚C

max.

Center frequency

—

1842.50

—

MHz

Maximum insertion attenuation

max

1805.00 ... 1880.00 MHz

—

2.4

2.7

Amplitude ripple (p-p)

∆α

1805.00 ... 1880.00 MHz

—

1.5

1.8

Input VSWR

1805.00 ... 1880.00 MHz

—

2.4

2.6

Output VSWR

1805.00 ... 1880.00 MHz

—

2.2

2.4

Output amplitude balance

(|S31/S21|)

1805.00 ... 1880.00 MHz

–1.5

1.5

Output phase balance

(φ(S31)−φ(S21)+180˚)

1805.00 ... 1880.00 MHz

–10.0

10.0

degree

Attenuation

10.00 ... 1000.00 MHz

—

1000.00 ... 1705.00 MHz

—

1705.00 ... 1785.00 MHz

—

1920.00 ... 1980.00 MHz

—

1980.00 ... 2030.00 MHz

—

2030.00 ... 5000.00 MHz

—

5000.00 ... 6000.00 MHz

—

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