Millimeter-wave integrated waveguide power dividers for power combiner and phased array applications

Zhang, Xianrong; Wang, Hongtao; Liao, Ao; Xiang, Yang

doi:10.1109/icmmt.2010.5524912

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…Hybrid couplers can serve as alternative solutions. Among existing waveguide hybrids [15,16], the magic Tee is the most appropriate choice [17,18] due to its excellent EM features and smaller form factor, making it suitable for the chosen manufacturing scheme used here.…”

Section: Magic Teementioning

confidence: 99%

Low‐loss compact power combiner for solid state power amplifiers with high reliability

Gholami¹,

Amaya

Yagoub³

2016

IET Microwaves, Antennas & Propagation

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In this study, a low‐loss and compact planar power combiner for solid state power amplifiers (SSPAs) is proposed. It combines eight power amplifier modules with low insertion loss (IL) and high reliability by utilising a novel magic‐Tee configuration and E‐plane bend along with a suitable microstrip‐to‐waveguide transition. The fabricated prototype was implemented through automatic milling machines to produce three planar layers that form the final structure. This novel approach enabled precise fabrication, simple assembly of the SSPAs as well as low‐cost manufacturing in comparison with existing traditional approaches. This process is suitable for SSPAs operating from 4 to 40 GHz. The combined IL of the implemented combiner network is less than 0.6 dB at Ka‐band, 0.5 dB at Ku‐band, and 0.4 dB at X‐band while exhibiting a 10% fractional bandwidth.

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Section: Magic Teementioning

confidence: 99%

Low‐loss compact power combiner for solid state power amplifiers with high reliability

Gholami¹,

Amaya

Yagoub³

2016

IET Microwaves, Antennas & Propagation

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“…We have investigated some power combining structures in published papers, but we find that this structure cannot well realise high‐efficiency power combining both low cost and good performance. Researchers have proposed a four‐way power divider based on the Riblet coupler [1], but its phase imbalance gets to ±3° only in a fractional bandwidth of 4%, and the intrinsically 90° out‐of‐phase of need to be compensated, which increases the overall size of the whole structure. A radial‐type six‐way waveguide divider is presented in [2], but the frequency bandwidth was narrow and with no isolation.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency millimetre‐wave spatial power combining structure

Ding¹,

Wang

Zhang

et al. 2015

Electron. lett.

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A high-efficiency millimetre-wave spatial power combining structure that is a waveguide power combining network is proposed. High phase and amplitude consistency and isolation between the output ports are the key factors for the high-efficiency power combining structure. The phase and amplitude consistency is guaranteed by the symmetry of this structure. As a sample, an eight-way power splitting and combining network in the Ka-band is designed, fabricated and measured. In a fractional bandwidth of 20% around a centre frequency of 33 GHz, the measured results show that the phase and amplitude differences between the output ports are smaller than ±1.5°and ±0.1 dB, isolation between the output ports is higher than 17 dB, insertion loss is lower than 0.1 dB, and the return loss of the input and output ports is better than 18 dB. The proposed broadband eight-way power combining network can improve the spatial power combining efficiency to a great extent with excellent performance.Introduction: In microwave and millimetre-wave circuits and systems, the output power of the components is restricted because of the material, heat dissipation as well as other reasons. So the spatial power combining technique is a good choice for high power output. In this case, the highefficiency, millimetre-wave spatial power combining structure is studied for efficient combining efficiency. The power dividing and combining networks with low insertion loss, wide bandwidth, high power capability, high isolation, especially for excellent amplitude and phase consistency between the output ports have become the most important part for spatial power splitting and combining systems. We have investigated some power combining structures in published papers, but we find that this structure cannot well realise high-efficiency power combining both low cost and good performance. Researchers have proposed a four-way power divider based on the Riblet coupler [1], but its phase imbalance gets to ±3°only in a fractional bandwidth of 4%, and the intrinsically 90°out-of-phase of need to be compensated, which increases the overall size of the whole structure. A radial-type six-way waveguide divider is presented in [2], but the frequency bandwidth was narrow and with no isolation. In [3], an eight-way E-plan magic-T structure waveguide divider in the Ka-band is proposed. It increases the assembly complexity and cost of fabrication because of its spatial structureIn this Letter, we proposed a broadband waveguide power splitting and combining structure with excellent phase and amplitude consistency and high isolation between the output ports. Table 1 compares the proposed structure and conventional structures. In comparison with the conventional power dividing and combining networks, the proposed one has higher isolation, more excellent phase and amplitude consistency between the output ports and better insertion and returns loss for input and output ports, which are the key factors for power dividing and combining technology. A waveguide sample operating at 33...

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“…그러나 이러한 전력합성기들은 손실이 크고 큰 전력을 다루어야 하는 경우에 많은 어려움을 발생시킨다. 한편, 도파관을 사용하여 전 력을 합성하는 방법은 다수의 전력 모듈을 저손실로 효율적으로 결합할 수 있고, 밀리미터파 영역에서는 작은 파장으로 인해 모듈의 크기를 소형화할 수 있 다 [3]～ [5] . 또한, 저항성 격막을 사용하여 높은 격리도 특성을 얻을 수 있다 [6] .…”

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High-Isolation Ka-Band Power Combiner Using a Resistive Septum Inserted in a Slit of Waveguide

Kim¹,

Shin²,

Lee³

et al. 2012

The Journal of Korean Institute of Electromagnetic Engineering

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A high-isolation Ka-band WR-28 waveguide power combiner is designed and implemented using a resistive septum. The waveguide power combiner developed here is an E-plane T-junction type with a TaN resistive septum inserted in a slit of waveguide junction. The fabricated waveguide power combiner shows a return loss better than -20 dB and an insertion loss less than 0.1 dB. Also the measurement shows isolation levels of 20 dB or more almost all over the band and in particular 25 dB or more below 37 GHz. The amplitude and phase imbalance are measured to be less than 0.1 dB and 2.5°, respectively.

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Millimeter-wave integrated waveguide power dividers for power combiner and phased array applications

Cited by 5 publications

References 5 publications

Low‐loss compact power combiner for solid state power amplifiers with high reliability

Low‐loss compact power combiner for solid state power amplifiers with high reliability

High‐efficiency millimetre‐wave spatial power combining structure

High-Isolation Ka-Band Power Combiner Using a Resistive Septum Inserted in a Slit of Waveguide

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