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"High Frequency Ceramic Solutions"
2.45 GHz Harmonic Filter-Balun Optimized for AT86RF230/231 and ATmega128RFA1 P/N 2450FB15L0001 Page 1 of 4 Detail Specification: 06/29/2010 General Specifications
Part Number Frequency (MHz) Unbalanced Impedance Balanced Impedance Insertion Loss Return Loss Phase Difference Amplitude Difference 2450FB15L0001 2400~2500 50 Impedance match to AT86RF230/231 and ATmega128RFA1 1.5 dB max. 9.5 dB min. 180 10 2.0 dB max. Input Power Reel Quantity Differential Mode Attenuation (dB) Common Mode Attenuation (dB) Operating Temperature Storage Temperature 20 min.@ 4800~5000MHz 20 min.@ 7200~7500MHz 20 min.@ 4800~5000MHz -40 to +85C +5 to +35C, Humidity: 45-75%RH, 12 mos. Max 2 Watts max. 4,000
* 12 months in vacuum sealed bag and 1 week after opened.
Mechanical Dimensions
In L W T a b c g p 0.079 0.004 0.049 0.004 0.031 0.004 0.012 0.004 0.008 0.004 0.012 +.004/-.008 0.014 0.004 0.026 0.002 mm 2.00 0.10 1.25 0.10 0.80 0.10 0.30 0.10 0.20 0.10 0.30 +0.1/-0.2
g b
Terminal Configuration
W
c
a p
No.
Function Unbalanced Port
GND or (DC Feed + RF GND)
L
T
0.35 0.10 0.65 0.05
1 2 3 4 5 6
Balanced Port Balanced Port GND GND 3 2 1
Balun Layout with AT86RF230/1
* Line width should be designed to match 50 characteristic impedance, depending on PCB material and thickness. 0.35
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0402 22pF RF GND cap Johanson p/n: 500R07S220JV4 321 0.8 456
4
5
6
*
Solder Resist Land 0.8 0.18 Through-hole ( 0.3)
0.30 Units: mm Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2010 Johanson Technology, Inc. All Rights Reserved
"High Frequency Ceramic Solutions"
2.45 GHz Harmonic Filter-Balun Optimized for AT86RF230/231 and ATmega128RFA1 P/N 2450FB15L0001 Page 2 of 4 Detail Specification: 06/29/2010
)
Balun Layout with ATmega128RFA1
) )
)
)
)
)
)
0402 22pF RF GND cap Johanson p/n: 500R07S220JV4
) )
)
~0.65mm
)
*
)
0402 1.5pF** shunt cap
) )
)
)
)
)
)
ATmega128RFA1
32
1
0.8 4 5 6
50 t
) )
Solder Resist 0.8 0.18 Land Through-hole ( 0.3)
Units: mm 0.35 * Distance can vary depending on PCB layout and stack-up (matching phase may be influenced by this distance) ** Shunt capacitor value is between 0.5pF and 1.5pF, depending of the true line impedance
www..net
Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2010 Johanson Technology, Inc. All Rights Reserved
"High Frequency Ceramic Solutions"
2.45 GHz Harmonic Filter-Balun Optimized for AT86RF230/231 and ATmega128RFA1 P/N 2450FB15L0001 Page 3 of 4 Detail Specification: 06/29/2010
)
)
AT86RF230/231 With DC feed graphical representation:
) ) ) ) )
) ) ) ) )
) )
)
)
)
AT86RF230/231
)
See last page for filtering performance
0402 22pF RF GND cap Johanson p/n: 500R07S220JV4
)
)
)
ATmega128RFA1 With DC feed graphical representation:
www..net
ATmega128RFA1
See last page for filtering performance
Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2010 Johanson Technology, Inc. All Rights Reserved
"High Frequency Ceramic Solutions"
2.45 GHz Harmonic Filter-Balun Optimized for AT86RF230/231 and ATmega128RFA1 P/N 2450FB15L0001 Page 4 of 4 Detail Specification: 06/29/2010 Typical Electrical Performance (T=25C)
)
Insertion Loss / Return Loss
)
0
)
)
)
)
)
)
)
)
-10
)
-20
-30
-40
-50
)
)
-60
unbal port return loss balanced port return loss insertion loss common mode rejection
)
-70 50 1245 2440 3635 4830 6025 Frequency (MHz )
) )
7220
8415
9610
10805
12000
Amplitude Difference / Phase Difference
)
2
)
dif_amplitude
1 0 -1 -2 2.0
)
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200 150 100 50 0 -50 -100 -150 -200 3.0
dif_phase
2.5 freq, GHz
Johanson Technology, Inc. reserves the right to make design changes without notice. All sales are subject to Johanson Technology, Inc. terms and conditions.
www.johansontechnology.com
4001 Calle Tecate * Camarillo, CA 93012 * TEL 805.389.1166 FAX 805.389.1821 2010 Johanson Technology, Inc. All Rights Reserved

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