Lange - RF/Microwave Design Software for Directional Couplers
Where Synthesis enables Analysis™

Software Product: Lange - Microstrip interdigitated Coupler

Atlanta RF Software offers RF/microwave CAE software product: Lange, which performs Electrical & Dimensional Synthesis, Sensitivity Analysis and Frequency Analysis of microstrip Interdigitated directional couplers. Some product features:

1. Synthesis of interdigitated coupler’s physical dimensions (strip width & spacing) from:
   1. Coupling level (dB) and system impedance level (Zo), or
   2. Even and Odd-Mode Impedances: Zoe & Zoo.
   3. 4-strip or 6-strip interdigitated coupler designs.
2. Analysis of Impedances: Zoe, Zoo & Zo from known physical dimensions:
   1. A Min/Max range of Strip Widths: Wmin to Wmax.
   2. A Min/Max range of Strip Spacings: Smin toSmax.
3. Sensitivity Analysis of Impedance : Zoe & Zoo to:
   1. Substrate thickness: H, and Dielectric Constant: Er.
   2. A Min/Max range of Strip Widths: Wmin to Wmax.
   3. A Min/Max range of Strip Spacings: Smin to Smax,
4. Frequency Analysis response profile of:
   1. Dispersive Zoe, Zoo and their effective dielectric constants versus Frequency.
   2. Conductor losses versus Frequency (Resistivity & Surface Roughness).
5. Default values for each User-entered input data.
6. Output Data stored on your hard drive for graphical plots.

Download the DEMO software product: Lange-DEMO to explore the functions available and solutions offered to ease your everyday workload.

​Software product: Lange provides the User with full design capability, from Synthesis to Analysis. Hardware development time is drastically reduced when Lange characterizes your coupler prior to manufacturing. Simply enter your dimensions, operating frequency and desired coupling, then let Lange do the rest.

Download the User Manual for software product: Lange to view the many features and capabilities that support your RF circuit designs.

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Lange Couplers used in a Low Noise Amplifier (LNA)