Abstract
A fully planar microstrip coupler with a high coupling level up to 4 dB is fabricated on PCB. Based on the conventional coupled-line structure, a gap size of coupled lines about 14 μm is realized by low cost IC process. It has a single stage and requires no bond wire. In measurement, a bandwidth more than 50% and isolation and return loss better than -20 dB are achieved. The measured responses have good agreement with EM simulation data.
| Original language | English |
|---|---|
| Pages (from-to) | 170-172 |
| Number of pages | 3 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 46 |
| Issue number | 2 |
| DOIs | |
| State | Published - 20 07 2005 |
| Externally published | Yes |
Keywords
- Directional coupler
- Microstrip circuit