Millimeter-Wave Power-Combining Techniques

Chang, Kai; Sun, Cheng

doi:10.1109/tmtt.1983.1131443

Cited by 349 publications

(70 citation statements)

References 64 publications

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“…Taking away a 3 dB of an ideal power combining, the insertion loss of this combiner is about 0.2 dB in Ka-band, which is approximately equal to that of a single waveguide-to-microstrip transition [12]. Moreover, S(2,1) and S (3,1) show an excellent agreement in amplitude and phase at all the frequencies, which is advantageous to obtain a high efficiency when power combining [1].…”

Section: Introductionmentioning

confidence: 91%

“…make the solid-state high power devices working orderly. With convenience of integrating solid-sate high power devices, this low loss broad-band symmetric microstrip integrated multi-way power combining network could be used in millimeter-wave solid-sate high power combining with a high efficiency [1,2].…”

Section: Four-way Power Combining Networkmentioning

confidence: 99%

“…To obtain solid-state high power at millimeter-wave frequency, high efficiency power combiners with broad bandwidth and good thermal property are essential [1,2], because of a higher loss of integrated transmission line and lower output power of millimeter-wave solid-sate devices.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Millimeter-wave Power Combining Amplifier Based on a Waveguide-Microstrip E-Plane Dual-probe Four-way Power Combining Network

Xie

Zhao

Diao

2008

Int J Infrared Milli Waves

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This paper presents a new millimeter-wave solid-state power combining amplifier, which is based on a waveguide-microstrip E-plane dual-probe four-way power combining network. With a compact structure and an easy fabrication process, this combining network fulfils waveguide-to-microstrip transition and power combining simultaneously, and shows a broad-band low loss performance in Ka-band. With good thermal property, a four-way high power combining amplifier is fabricated. The measured output power is more than 40 dBm in 32-37 GHz, and the highest output power, 15.8 W, occurs at 32 GHz. The corresponding combining efficiency is more than 77% in 32-38 GHz.

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Section: Introductionmentioning

confidence: 91%

Section: Four-way Power Combining Networkmentioning

confidence: 99%

See 1 more Smart Citation

A Millimeter-wave Power Combining Amplifier Based on a Waveguide-Microstrip E-Plane Dual-probe Four-way Power Combining Network

Xie

Zhao

Diao

2008

Int J Infrared Milli Waves

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“…The development of power-combining technique has a long history from traditional binary circuit-level combiner to recent spatial power combiner, from earlier discrete transistors to recent monolithic microwave integrated circuits (MMICs). [1][2][3][4][5][6][7][8][9][10] Compared to traditional planar dividers/combiners using binary circuit-level approaches, [1,2] spatial power combining techniques are very promising as they offer higher combining efficiencies. This advantage is due to the fact that the output power from multi-device is added in air or low-loss single-mode waveguide using a single stage of power combining, so the insertion loss remains roughly independent of the number of amplifier elements.…”

Section: Introductionmentioning

confidence: 99%

A broadband power-combined amplifier based on multi-stage probe-pair traveling-wave power divider/combiner at Ka-band

Yin

2014

Journal of Electromagnetic Waves and Applications

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A multi-stage traveling-wave waveguide-based spatial power divider/combiner using waveguide-to-microstrip (Wg-Ms) probe-pair coupling structure is proposed and applied to the design of a broadband power-combined amplifier module at Ka-band. An eight-way passive back-to-back power divider-combiner with four-stage Wg-Ms probe-pair transitions has been designed, fabricated, and tested. The measured overall insertion loss is less than 1.5 dB from 28 to 40 GHz, which demonstrates the low-loss performance of the proposed multi-way dividing/combining structure. Based on the passive power divider/combiner, an eight-device power-combined amplifier has been implemented with eight broadband medium power amplifier chips. The measured small-signal gain of the amplifier is more than 18 dB and the output power at 1-dB gain compression (P-1 dB) is higher than 30 dBm in the frequency band of 28-40 GHz. Power combining efficiency is within the range of 76-88%. Furthermore, the performance degradation of the power-combined amplifier due to device failure is also analyzed and tested. The experimental result indicates the reliability of this type of power-combined amplifier.

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“…Recently, various methods for combining output powers of solid-state active devices have been developed [l] [2]. In the millimeter-wave frequency range, power combiners using NRD guides [3] are considered effective because NRD guides have low loss and non-radiative characteristics.…”

Section: Introductionmentioning

confidence: 99%

Single and multiple Gunn diode oscillator using an image NRD guide

Sanagi

Nogi

1999 Asia Pacific Microwave Conference. APMC'99. Microwaves Enter the 21st Century. Conference Proceedings (Cat. No.99TH8473)

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A single and a multiple Gunn diode oscillator using an image NRD guide have been investigated. The LSMol mode which is the operating mode of the image NRD guide can be the dominant mode because undesired modes are suppressed due to existence of the image plane. In experiments at X-band for oscillators with Gunn diodes mounted in the dielectric strip of the image NRD guide, the oscillation frequencies could be varied by a movable shorting plane for the single diode case and an effective power combining operation was obtained for the double diode case.

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Millimeter-Wave Power-Combining Techniques

Cited by 349 publications

References 64 publications

A Millimeter-wave Power Combining Amplifier Based on a Waveguide-Microstrip E-Plane Dual-probe Four-way Power Combining Network

A Millimeter-wave Power Combining Amplifier Based on a Waveguide-Microstrip E-Plane Dual-probe Four-way Power Combining Network

A broadband power-combined amplifier based on multi-stage probe-pair traveling-wave power divider/combiner at Ka-band

Single and multiple Gunn diode oscillator using an image NRD guide

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