Broadband Rectangular Waveguide to GCPW Transition

Dong, Jun; Yang, Tao; Liu, Yu; Yang, Ziqiang; Zhou, Yihong

doi:10.2528/pierl14050907

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…The coplanar waveguide (CPW) has been proved to be one of the most popular planar transmission lines in microwave and millimeter-wave applications. Due to the coplanar structure of the CPW, where the signal line and the two ground planes are placed on the same side of the substrate, surface mount and active devices can be easily integrated with the CPW transmission line [1][2][3][4][5][6]. In spite of the wide use of printed planar circuits in microwave and millimeter-wave systems, metallic waveguides still play an essential role in various components such as high-gain antennas [7], filters [8], diplexers, amplifiers [9] and so on.…”

Section: Introductionmentioning

confidence: 99%

Broadband Coplanar Waveguide to Air-Filled Rectangular Waveguide Transition

et al. 2022

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This article introduces a novel transition between coplanar waveguide (CPW) and air-filled rectangular waveguide (RWG). A rectangular radiator etched with a semi-elliptic slot is connected to the center conductor of CPW to realize the transition, which broadens the bandwidth. This direct transition does not require intermediate transition or air-bridges. Moreover, the planar circuit of the transition can be designed with high- and low-permittivity materials (εr = 10.2 and 2.22), which offer more benefits in both PCB and MMIC design. Two back-to-back transition prototypes at X-band are designed, fabricated and measured. The 15 dB fractional bandwidths are expanded to 44.7% and 47.6% respectively, which have been demonstrated in both of the transitions (εr = 10.2 and 2.22). The measurement results agree well with simulation results, which validate the feasibility of this design.

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Section: Introductionmentioning

confidence: 99%

Broadband Coplanar Waveguide to Air-Filled Rectangular Waveguide Transition

et al. 2022

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“…Moreover, some outdoor applications [3] require integration of bulky components such as high-gain array or waveguide (WG) antenna, nonplanar filters, waveguides, and connectors. Therefore, wideband transitions [4,5] between them are required.…”

Section: Introductionmentioning

confidence: 99%

Broadband Transition From Microstrip Line to Waveguide Using a Radial Probe and Extended GND Planes for Millimeter-Wave Applications

Ariffin¹,

Isa²,

Malekmohammadi³

2016

PIER Letters

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A broadband microstrip line-to-waveguide (MSL-to-WG) transition is developed for E-band applications. In order to achieve a sufficient and broadband coupling between the microstrip line (MSL) and waveguide (WG), a radial electric probe at the end of the MSL and extended ground (GND) planes on the dielectric substrate are proposed. Results are compared against a simple transition (S-Tr) with a straight electric probe. For the case of operational bandwidth (BW) for an input return loss (S 11) below −20 dB, the proposed transitions using the radial probe and extended GND planes show the BW enhancement of 33.8% and 61.9%, respectively, compared to the S-Tr. The proposed and simple transitions were fabricated on a low-loss liquid crystal polymer (LCP) dielectric substrate. The measured bandwidth (BW) for S 11 below −10 dB of the proposed transition is over 28 GHz, which is satisfied at all test frequencies from 67 to 95 GHz. Its measured insertion loss can be analyzed as −1.33 and −1.41 dB per transition at 70 and 80 GHz, respectively, considering the loss contribution of the cable adapter and waveguide transition.

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“…The symmetric tapered probe is firstly presented in uniplanar circuit design . In our previous work, we have developed it for the double‐layer circuit . However, this symmetric structure is more suitable for SIW‐to‐waveguide transition design, and expects to obtain broader bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Low loss and broadband transition between substrate integrated waveguide and rectangular waveguide

Dong

Liu

Lin

et al. 2015

Int J RF and Microwave Comp Aid Eng

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In this article, a novel transition between substrate integrated waveguide (SIW) and rectangular waveguide is proposed. A pair of antipodal tapered probes is developed to convert the E‐field of SIW to that of waveguide, acting as an antipodal dipole antenna to improve the performance of the SIW‐to‐waveguide transition. A back‐to‐back prototype of the proposed transition is fabricated and measured, the results show that the transition achieve a bandwidth of 51.1% from 23.7 to 40 GHz, and a size reduction of 75.3% compared to the SIW‐to‐waveguide transition using antipodal fin‐line. A tolerance analysis is performed via the simulation to verify the reliability of this transition design. For further validation, the antipodal tapered probes are employed for the design of partially filled SIW‐to‐waveguide transition. From its experimental results, it demonstrates that the loss of a single SIW‐to‐waveguide is less than 0.26 dB over the frequency range of 24.9–40 GHz. In addition, such proposed SIW‐to‐waveguide transition is suitable for hermetic packaging due to the inherent property in transition structure. These results show that the proposed transition can offer the advantages of broad bandwidth, low loss, compact size, and stable performance at millimeter‐wave frequencies. © 2015 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:54–61, 2016.

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Broadband Rectangular Waveguide to GCPW Transition

Cited by 6 publications

References 9 publications

Broadband Coplanar Waveguide to Air-Filled Rectangular Waveguide Transition

Broadband Coplanar Waveguide to Air-Filled Rectangular Waveguide Transition

Broadband Transition From Microstrip Line to Waveguide Using a Radial Probe and Extended GND Planes for Millimeter-Wave Applications

Low loss and broadband transition between substrate integrated waveguide and rectangular waveguide

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