A Compact Ka-Band Broadband Waveguide-Based Traveling-Wave Spatial Power Combiner With Low Loss Symmetric Coupling Structure

Kang, Zhi-Yong; Chu, Qing‐Xin; Wu, and Qiong Sen

doi:10.2528/pierl12111311

Cited by 12 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Spatial Power Combining techniques have become one of the most reliable and efficient techniques of millimeter-wave power combination. Reaching high powers in small volumes with high fault tolerances, Spatial Power Amplifiers (SPA) are the perfect candidates to replace high power Vacuum Tubes (VT) [1][2][3][4][5][6][7][8][9][10][11][12], especially in space environments. The only field in which vacuum tube technology remains unmatched is in the production of very high pulsed power [13].…”

Section: Introductionmentioning

confidence: 99%

High Power Density Spatial Combiner for the Q-Band, Ready for Space Applications

Fantauzzi¹,

Valletti²,

Paolo³

2022

PIER M

View full text Add to dashboard Cite

This paper outlines the design characterization and electromagnetic performance of a millimeter-wave high power combining structure, which exploits the spatial power combination technique. The input matching is always below 10 dB over the entire Q band, and the overall weight of the structure is about 500 g. Multiphysics simulations show how this structure is suitable for the most challenging space missions that will arise in next few years. In fact, 100 W of RF power above the frequency of 40 GHz can be delivered while all the specifications for satellite payloads are complied. Other Spatial Power Combiner structures, such as Radial ones, cannot be implemented in space missions since they are much less compact and much heavier than the one presented in this article, and this is the major advantage of this configuration which was specially designed for a space project.

show abstract

Section: Introductionmentioning

confidence: 99%

High Power Density Spatial Combiner for the Q-Band, Ready for Space Applications

Fantauzzi¹,

Valletti²,

Paolo³

2022

PIER M

View full text Add to dashboard Cite

show abstract

“…Other approaches exploit the traveling-wave concept [16][17][18][19] for the signal division and subsequent combination in order to collect enough power at the output port. These structures require a tight control of the amplitude and phase imbalances among the different stages to maintain a high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Full-Band Oversized Turnstile-Based Waveguide Four-Way Power Divider/Combiner for High-Power Applications

et al. 2019

View full text Add to dashboard Cite

Very high-power and high-efficiency microwave applications require waveguide structures to combine/divide the power from/to a variable number of high-power solid-state devices. In the literature, among the different waveguide configurations, those capable of providing the maximum output power show a limited relative bandwidth. To overcome this limitation, in this paper a full-band (40%) waveguide power divider/combiner specifically designed for high-power applications (up to several kW) is presented. The proposed structure uses an evolved turnstile junction with a standard rectangular waveguide common port, rotated 45°, with respect to its central axis, to divide/combine the signal to/from the four output/input rectangular ports. The inclusion of an oversized central cavity together with circular and rectangular waveguide impedance transformers at the common port allows the achievement of a full-band operation with excellent electrical performance, while maintaining a very simple and compact configuration. Only two layers of metal are required for the physical implementation of this structure in platelet configuration. A prototype has been designed covering the full Ka-band (26.5–40 GHz), showing an excellent measured performance with around 30 dB of return loss, 0.18 dB of insertion loss, and less than 1.5° of phase imbalance.

show abstract

“…The traveling-wave waveguide-based power-combing techniques, in which multiple power devices are arrayed along the direction of wave propagation in waveguide, have also been widely studied because of their wideband operation and flexibility in increasing or decreasing number of units [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Ka-band power-combined amplifier based on a six-way quasi-planar power divider/Combiner

Cui

Cheng

et al. 2015

2015 Asia-Pacific Microwave Conference (APMC)

View full text Add to dashboard Cite

A Ka-band power-combined amplifier is presented based on a six way quasi-planar power divider/combiner. The directional coupler and three-stage travelling wave waveguide power divider/combiner are combined and analyzed respectively. The measured passive result shows that the back-to-back insertion loss is less than 1.5dB over the frequency range of 27-33GHz, which demonstrates the low-loss performance of the proposed dividing/combing structure. Based on the passive power divider/combiner, a six-way power-combined amplifier has been implemented with six medium power amplifier chips. The measured P-1dB of the power-combined amplifier is greater than 26.5dBm in this frequency band. The obtained combining efficiency is about 83-89%.

show abstract

A Compact Ka-Band Broadband Waveguide-Based Traveling-Wave Spatial Power Combiner With Low Loss Symmetric Coupling Structure

Cited by 12 publications

References 12 publications

High Power Density Spatial Combiner for the Q-Band, Ready for Space Applications

High Power Density Spatial Combiner for the Q-Band, Ready for Space Applications

Full-Band Oversized Turnstile-Based Waveguide Four-Way Power Divider/Combiner for High-Power Applications

A Ka-band power-combined amplifier based on a six-way quasi-planar power divider/Combiner

Contact Info

Product

Resources

About