A Fully Isolated N-Way Radial Power Combiner
| Autor: | Hendrik J. du Toit, Dirk I. L. de Villiers |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Radiation Acoustics Circulator 020206 networking & telecommunications 02 engineering and technology Condensed Matter Physics Microstrip law.invention law 0202 electrical engineering electronic engineering information engineering Insertion loss Power dividers and directional couplers Electrical and Electronic Engineering Resistor Coaxial Reflection coefficient Electrical impedance |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 68:2531-2538 |
| ISSN: | 1557-9670 0018-9480 |
| Popis: | A new passively isolated $N$ -way radial combiner design is proposed. The design incorporates low-loss partially filled radial combiners with a passive peripheral isolation network, where coaxial termination loads are used as isolation resistors. To confirm real-world performance, a 16-way combiner operating at 4 GHz was manufactured and tested. The minimum isolation measured among peripheral ports is better than 27 dB over more than 30% fractional bandwidth (BW), and the average asymmetric peripheral port input reflection is below −15 dB over 50% BW. Simulation analyses show that such excellent peripheral port isolation and matching has a significant value in improving the graceful degradation of a system utilizing such combiners. The prototype also achieves a center port reflection coefficient magnitude below −18 dB over 45% BW, and the measured signal balances are ±0.2 dB and ±2°. The structure that forms the radial cavity and PCB housing was manufactured exclusively on manually controlled machinery, so the measured 1-dB insertion loss BW is approximately 25%. |
| Databáze: | OpenAIRE |
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