A Wideband Millimeter-Wave SIW-to-RWG Transition for Thin Single Layer Substrates with Thick Metal Cladding

Hansen, Steffen; Kueppers, Simon; Pohl, Nils

doi:10.23919/eumc.2018.8541598

Cited by 12 publications

(11 citation statements)

References 6 publications

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“…3. For maximum flexibility the standardized WR-10 interface is used [10], [11]. Thus, the flange of the TX-and one/two RX-channels are milled into the front-end.…”

Section: A Overviewmentioning

confidence: 99%

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Versatile Dual-Receiver 94-GHz FMCW Radar System With High Output Power and 26-GHz Tuning Range for High Distance Applications

Welp

Hansen

Briese

et al. 2020

IEEE Trans. Microwave Theory Techn.

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Airborne applications demand exceptional overall radar system performance and eminently high output power for high range target detection. The frequency modulated continuous wave (FMCW) radar system presented in this article is capable of achieving this task due to its high output power at 94-GHz center frequency with over 26-GHz tuning range. Nevertheless, the radar still provides a small form factor and low power consumption of 4.25 W at 5 V single Universal Serial Bus (USB) supply. The key system component is a Silicon Germanium (SiGe) bipolar complementary metal-oxide-semiconductor (BiCMOS) monolithic microwave integrated circuit (MMIC) that contains a 94-GHz voltage-controlled oscillator (VCO), and a 27-GHz VCO for dual-loop phase-locked loop (PLL) stabilization, a power amplifier (PA), and two receive mixers. It generates frequency ramps between 83-and 109-GHz with a maximum output power of 19.7 dBm at its output after the bond wires on the printed circuit board (PCB) and 14.8-dBm output power at the radar's transmit (TX)-waveguide WR-10-flange. The sensor was also tested in a temperature range from −40 • C to +70 • C with menial deviation. Thus, the system offers high system dynamic range and far distance target detection range. Following a detailed system description, we finally present the FMCW range and Doppler measurements performed with the presented radar sensor as well as the application on unmanned aerial vehicles (UAVs) for flight altitude control and as airborne collision avoidance system (ACAS).

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“…3. For maximum flexibility the standardized WR-10 interface is used [10], [11]. Thus, the flange of the TX-and one/two RX-channels are milled into the front-end.…”

Section: A Overviewmentioning

confidence: 99%

“…To couple from the SIW into the RWG, a wideband transition based on a dual-mode cavity resonator combined with a λ/4-transformer similar to [10] is used. The transition can be integrated in a RF PCB manufacturing process, and therefore, no additional assembly steps or components are necessary.…”

Section: A Siw-to-rwg Transitionmentioning

confidence: 99%

Versatile Dual-Receiver 94-GHz FMCW Radar System With High Output Power and 26-GHz Tuning Range for High Distance Applications

Welp

Hansen

Briese

et al. 2020

IEEE Trans. Microwave Theory Techn.

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“…The performance of a back-toback transition is experimentally shown to yield a broad -10 dB IBW of 26.5 GHz (135-161.5 GHz). It is worth mentioning that there are two earlier studies [12,13] concerning the use of single-layer substrate transitions. In [12], a thick metal cladding was used in the design, which increased the complexity, loss, and cost of the transition.…”

Section: Introductionmentioning

confidence: 99%

A D-band Waveguide-SIW Transition for 6G Applications

Altaf

Elahi

Abbas

et al. 2022

J Electromagn Eng Sci

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In this work, a design of a transition from a standard D-band waveguide to substrate integrated waveguide (SIW) technology is presented for 6G applications. The waveguide is connected to an SIW by carving a slot at the bottom metal of the printed circuit board (PCB). A pair of vias is added to shift the inband null to a higher frequency, whereas a parasitic patch is used to improve impedance matching. A prototype of a back-to-back SIW transition is fabricated and measured using D-band VNA extenders. The measurement shows a −10 dB impedance bandwidth of 26.5 GHz (135–161.5 GHz) and a 3 dB bandwidth of 28 GHz (133.8–161.8 GHz). The transition can be integrated with a D-band antenna for 6G applications.

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“…In addition, integrated circuits at millimeter-wave frequencies still rely on planar structures due to their fabrication processes. As a result, transitions from planar transmission lines as well as rectangular waveguides to SIWs are necessary and have been extensively investigated [37][38][39][40][41][42][43][44]. When designing transitions, not only the characteristic impedances but also the propagation modes need to be matched so that it can provide a large bandwidth and a low transmission loss at the same time [45].…”

Section: Introductionmentioning

confidence: 99%

Wideband split-ring antenna arrays based on substrate integrated waveguide for Ka-band applications

Dong

Zhurbenko

Kaslis

et al. 2021

Int. J. Microw. Wireless Technol.

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This paper presents wideband split-ring antenna arrays based on substrate integrated waveguide (SIW) for Ka-band (26.5–40 GHz) applications. The antenna array is fed by a 2.92 mm coaxial connector (K-connector) and the power is equally distributed to each split-ring resonator. The designed coplanar waveguide (CPW), SIW, CPW-to-SIW transition, coaxial-to-CPW transition, and two-stage SIW power divider are described in detail. By using a thin Rogers 6002 substrate with silver epoxy-filled vias, a transition prototype is designed, fabricated, and tested in a back-to-back configuration. A wideband split-ring resonator is developed as a single element and four possible arrangements of antenna arrays are introduced. By combining the designed components and routing paths, two full layouts of the antenna arrays with four split-ring resonators are addressed. As a demonstrator, a 2×2 antenna array prototype in a compact format is designed, fabricated, and tested. The fabricated antenna array achieves a measured directivity of 15.0 dBi with a fractional bandwidth of 23.0% centered at 30.5 GHz.

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A Wideband Millimeter-Wave SIW-to-RWG Transition for Thin Single Layer Substrates with Thick Metal Cladding

Cited by 12 publications

References 6 publications

Versatile Dual-Receiver 94-GHz FMCW Radar System With High Output Power and 26-GHz Tuning Range for High Distance Applications

Versatile Dual-Receiver 94-GHz FMCW Radar System With High Output Power and 26-GHz Tuning Range for High Distance Applications

A D-band Waveguide-SIW Transition for 6G Applications

Wideband split-ring antenna arrays based on substrate integrated waveguide for Ka-band applications

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