Investigation of High-Efficiency Hybrid Power Combining for Ka-Band Frequencies
| Autor: | Laurenz John, Christian Friesicke, Rudiger Quay, Dirk Meder, Philipp Neininger, Thomas Zwick |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Amplifier 020206 networking & telecommunications 02 engineering and technology 021001 nanoscience & nanotechnology law.invention Power (physics) Planar law 0202 electrical engineering electronic engineering information engineering Insertion loss Optoelectronics Power dividers and directional couplers Ka band Hybrid power 0210 nano-technology business Waveguide |
| Zdroj: | 2018 Asia-Pacific Microwave Conference (APMC). |
| DOI: | 10.23919/apmc.2018.8617424 |
| Popis: | In this paper, planar hybrid assembly is investigated as a cost-effective alternative to waveguide and radial power combining of high-power GaN MMICs. To that end, a low-loss three-section branch-line coupler is developed and used as a power divider/combiner. It achieves an insertion loss of less than 0.3 dB between 25 and 35 GHz, which is a relative bandwidth of more than 30 %. Together with two Ka-band power amplifier MMICs, it is assembled onto a baseplate. Small-signal characterization show very little deterioration in gain. Thus, the achievable output power nearly doubles over the whole frequency range. |
| Databáze: | OpenAIRE |
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