K-Band Planar Magic-T Using LTCC Technology

Peng, Wenchao; Xiao, Qing; Chen, Xiancai

doi:10.1109/lmwc.2017.2724009

Cited by 10 publications

(4 citation statements)

References 8 publications

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“…Several planar structured magic-Ts were proposed [15]- [17]. Using the low-temperature co-fired ceramic (LTCC) technology, planar magic-Ts can be designed through microstrip-line-slot transition and aperture coupling structure [16], but still with high loss at mmWaves. The purpose of our work is to design a dual-polarized feed for a dual-reflector Cassegraine antenna of an ultrahigh gain above 50 dBi with a compact geometry and a low manufacture cost at Ka-band.…”

Section: Introductionmentioning

confidence: 99%

A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

et al. 2022

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A dual-polarized Ka-band feed based on gap waveguide (GW) technology for an ultra-highgain reflector antenna is presented. The feed provides SUM-beams for data transfer and DIFF-beams for tracking. The whole reflector antenna is composed of the feed and a dual-reflector Cassegraine antenna. The feed has been prototyped, and the measured reflection coefficients for the horizontally and the vertically polarized SUM-beam ports are below −10 dB and −8 dB over 30.8 − 38 GHz, respectively. The measured feed radiation patterns agree well with the simulated ones. The dual-reflector Cassegraine antenna has been designed and simulated by using GRASP with the simulated far-field function of the proposed feed, showing that the reflector antenna achieves SUM-beam gains above 50 dBi and the null depth of the DIFF-beams are more than 30 dB below the maximum of SUM-beams. INDEX TERMS Dual-polarized feed, gapwave planar Magic-T, feed with tracking functions, ultra-highgain antenna.

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Section: Introductionmentioning

confidence: 99%

A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

et al. 2022

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“…Therefore, many planar magic-T structures have been proposed to reduce the size. There are magic-Ts miniaturized using LTCC technology [17], substrate integrated waveguide [18,19] and NRD-guide [20]. Other planar magic-Ts usually use microstrip lines and slot lines [21,22,23,24,25,26,27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

A novel compact planar magic-T using CPS and microstrip-to-CPS transition

Nakahara

Tanaka

Toyoda

2021

IEICE Electron. Express

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This letter proposes a novel planar magic-T employing microstrip lines and a coplanar stripline (CPS) integrating a microstrip-to-CPS transition. The proposed magic-T uses a CPS instead of the slot line used in conventional planar magic-Ts to reduce the radiation loss. Defected ground structures (DGSs) are also used to suppress undesired common modes. This circuit has several attractive advantages in comparison with the conventional similar designs such as excellent amplitude and phase performance, compactness, and widely useable structure using a microstripto-CPS transition. The design, analysis and prototype parameters are discussed, followed by the measured and simulated results of the proposed magic-T.

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“…Magic-Ts are common four-port power dividing/combining networks that support in-phase and out-of-phase transmissions of the output signals and meanwhile offer isolations between the sum and difference inputs. They can be physically constructed using various TL architectures such as metallic waveguides [5]- [7], substrate integrated waveguides [8]- [13], and substrate integrated suspended lines [14]. Correspondingly, many fabrication techniques such as metal-based CNC milling [5]- [7], single/multi-layer PCB process [8]- [11], [14] and low-temperature co-fired ceramic technology [12], [13] have been developed to implement the magic-Ts.…”

Section: Introductionmentioning

confidence: 99%

“…They can be physically constructed using various TL architectures such as metallic waveguides [5]- [7], substrate integrated waveguides [8]- [13], and substrate integrated suspended lines [14]. Correspondingly, many fabrication techniques such as metal-based CNC milling [5]- [7], single/multi-layer PCB process [8]- [11], [14] and low-temperature co-fired ceramic technology [12], [13] have been developed to implement the magic-Ts. Waveguide magic-Ts exhibit better power handling capability than the planar counterparts, while they suffer from bulky and incompact packages because of different orientations of the waveguide arms.…”

Section: Introductionmentioning

confidence: 99%

A 3-D Printed $E$ -Plane Waveguide Magic-T Using Air-Filled Coax-to-Waveguide Transitions

Guo

Gao

Wang

et al. 2019

IEEE Trans. Microwave Theory Techn.

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This paper reports on a new class of broadband and fully 3-D printed E-plane coax-to-waveguide transition and a monolithically 3-D printed waveguide magic-T based on the transition. The transition is constructed by a section of air-filled rectangular coaxial transmission line that is placed between two broadband coax-to-waveguide probe transitions. It is used to interconnect the magic-T's sum port and the waveguide T-junction. The incorporation of the transition reorients all the waveguide arms of the magic-T into the E plane. Some X-band prototypes of the proposed transition and magic-T are designed and implemented. Polymer-based additive manufacturing and copper electroplating techniques are employed to fabricate each prototype monolithically. The transition as well as the magic-T exhibits broadband and low-loss characteristics from 8.2 to 12.4 GHz with measured performance well matched with the simulations. Additionally, the power handling capability (PHC) including the peak PHC (PPHC) and the average PHC (APHC) of the magic-T is evaluated by simulations, showing that the proposed magic-T could handle 100 W of APHC.

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K-Band Planar Magic-T Using LTCC Technology

Cited by 10 publications

References 8 publications

A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

A Compact Gap-Waveguide Dual-Polarized Ka-Band Feed for 50dBi Reflector Antennas With Tracking Function

A novel compact planar magic-T using CPS and microstrip-to-CPS transition

A 3-D Printed $E$ -Plane Waveguide Magic-T Using Air-Filled Coax-to-Waveguide Transitions

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