Dec. 6, ‘04 EHFFD1629 1.8GHz 1:1 Balun [Dimensions] Unit: mm <Bottom & Side view> [Pin assignment] <Top view> No. 1 2 3 4 0.48 0.32 (3) 0.4 (1) 0.8 IN OUT1 OUT2 GND [Equivalent circuit] 0.44 0.72 1.6 +/- 0.1 0.44 (4) (2) 0.65 +/- 0.1 1.6 +/- 0.1 (1)IN (2)OUT1 (4)GND (3)OUT2 [Characteristics] Ta=-30…+85degC Item Frequency range Insertion loss Amplitude balance Phase balance Impedance Unbalance port VSWR Remark Condition Spec. 1700-2000 Back to back 0.8 max 50/50 1.5 max 50/50 180+/-10 IN/OUT 50/50 50/50 2.5 max DC bias must be 0V. Unit MHz dB dB deg ohm - (Note) This product does not include a DC-cutting device. Application of a DC voltage betw een the Balance port and the Unbalance port may cause product deterioration or breakage. [Test circuit diagram] Fig. 1 Fig. 2 (3) NETWORK ANALYZER GND GND Additional Resistor 56 ohm GND (5) S-PARAMETER TEST SET (2) (1) GND A B Item Insertion loss (IL) Loss 1 Loss 2 Phase 1 Phase 2 Unbalance port VSWR Circuit Port A Fig. 2 (4) Fig. 1 (1) Fig. 1 (1) Fig. 1 (1) Fig. 1 (1) Fig. 1 (1) (4) GND Port B 50 ohm Remark (5) for a device is (IL)/2. (2) (3) Amplitude balance (3) (2) = | Loss 1 - Loss 2 | (2) (3) Phase balance (3) (2) = | Phase 1 - Phase 2 | (2) (3)