Efficient waveguide power combiners at mm-wave frequencies

van Schelven, R.M.; Spirito, M.; Cavallo, D.

doi:10.1049/mia2.12349

Efficient waveguide power combiners at mm-wave frequencies

Title

Efficient waveguide power combiners at mm-wave frequencies

Author

van Schelven, R.M. (TU Delft Tera-Hertz Sensing)
Spirito, M. (TU Delft Electronics)
Cavallo, D. (TU Delft Tera-Hertz Sensing)

Date

2023

Abstract

In this study, an efficient power combiner for mm-wave frequency transmitters is investigated. The combiner is based on a parallel plate waveguide (PPW) excited with multiple parallel feeds. The Doherty power combiner scheme is also integrated in the proposed concept, to increase the efficiency of the amplifiers when implementing amplitude modulation. The advantage of the proposed PPW combiner with respect to other concepts, for example, the ones based on substrate-integrated waveguide, is the wider bandwidth and the scalability to an arbitrary number of inputs. Measured results from a demonstrator realised in standard printed circuit board technology are presented. Two variations of the combiner are implemented, one terminated with a 50 Ω coaxial output, and another integrated with an antenna. In the latter case, the waveguide is folded so that both the power combiner and the antenna fit within a half wavelength size, and thus would be compatible with a dense antenna array implementation.

Subject

millimetre waves
parallel plate waveguides
power combiners

To reference this document use:

http://resolver.tudelft.nl/uuid:1e2b4de9-e97f-4db7-ab71-5be29e6a5991

DOI

https://doi.org/10.1049/mia2.12349

ISSN

1751-8725

Source

IET Microwaves, Antennas & Propagation, 17 (6), 467-477

Part of collection

Institutional Repository