WLAN Balun 2.4–2.5 GHz 禾頻科技 Applications BL214B ■ WLAN Systems Including 802.11 b,g,n. Features ■ LTCC Technology ■ SMD Package, 2.0 x 1.25 x 1.0 mm ■ DC feed Description The BL214B is a ceramic balun using LTCC design and manufacturing technology. The design is compatible with 802.11 WLAN. Electrical Specifications at 25°C Parameter Min. Pass band Typ. 2.4 Pass band Insertion Loss 0.6 Pass band Return Loss 10 Max. Unit 2.5 GHz 1.0 dB 12 dB Unbalanced Impedance 50 Ohm Balanced Impedance 100 Ohm Phase Difference 170 Magnitude Difference 177 190 Degree 1.0 2.0 dB Typical Performance Data Typical Balanced to Unbalanced Response 0 0 -2 -0.2 -4 -0.4 -6 -0.6 -8 -0.8 -10 -1 -12 -1.2 -14 -1.4 S21 (dB) (R) Balanced to Unbalanced S11 (dB) (L) Unbalanced Port S22 (dB) (L) Balanced Port (dB) (L) Common Mode Rejection -16 -18 -20 -22 -24 -1.6 -1.8 -2 -2.2 -2.4 -26 -2.6 -28 -2.8 -30 -3 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 Frequency (GHz) 5/F,No.61,Lane 90,Kung Wu Road, Lung Tan, Tao Yuan, Taiwan Tel:886-3-4091046 Fax:886-3-4090758 Email:[email protected] Specifications subject to change without notice. Rev.050315 2.8 . WLAN Balun 2.4–2.5 GHz 禾頻科技 Typical Phase Difference 190 188 186 Phase Difference (Deg) (Degree) 184 182 180 178 176 174 172 170 2.2 2.25 2.3 2.35 2.4 2.45 2.5 2.55 2.6 2.65 2.7 2.75 Frequency (GHz) Printed Circuit Board Layout 5/F,No.61,Lane 90,Kung Wu Road, Lung Tan, Tao Yuan, Taiwan Tel:886-3-4091046 Fax:886-3-4090758 Email:[email protected] Specifications subject to change without notice. Rev.050315 2.8 .