A compact wideband ring mixer utilizing a pair of PLANAR transitions for phase inversion

Mohyuddin, Wahab; Kim, Young-Gon; Woo, Dong Sik; Choi, Hyun Chul; Kim, Kang Wook

doi:10.1002/mop.28478

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…The sizes were 28 × 28 and 25.4 × 25.4 mm 2 at the center frequencies of of 2.45 and 6.0 GHz. The proposed compact size of the mixer was 22.21 × 18.32 mm 2 at the center frequency of 2.165 GHz . The size of the proposed mixer was smaller than the size of the proposed mixer was reduced by 1.93 and 1.59 times …”

Section: Experimental Results Of the Mixermentioning

confidence: 94%

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Miniaturization of a single‐ended mixer using T‐shaped Wilkinson power combiner for medical wireless communication applications

Yoon

Kim

2019

Micro & Optical Tech Letters

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In the modern day, wireless communications systems are widely used for medical services and medical information security. A wireless communication device for medical services is required for a high performance and small size technique. In this article, a proposed compact size of the single‐ended mixer using small size of the Wilkinson power divider with T‐shaped transmission line is presented. The compact size of the mixer used for small size is based on Wilkinson power divider using T‐shaped transmission line which is connected to amplifier circuit part. The electrical length of the transmission line for the conventional Wilkinson power divider was 90°. However, the electrical length of the T‐shaped transmission line was 30°. Therefore, the physical length was reduced by 1/2 times. The size of a proposed mixer was 22.21 × 18.32 mm2 at a center frequency of 2.165 GHz. It will be applied to a transceiver for wireless communication system of medical services.

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Section: Experimental Results Of the Mixermentioning

confidence: 94%

“…The proposed compact size of the mixer was 22.21 × 18.32 mm 2 at the center frequency of 2.165 GHz. 17,18 The size of the proposed mixer was smaller than the size of the proposed mixer was reduced by 1.93 and 1.59 times. 17,18…”

Section: Experimental Results Of the Mixermentioning

confidence: 95%

Miniaturization of a single‐ended mixer using T‐shaped Wilkinson power combiner for medical wireless communication applications

Yoon

Kim

2019

Micro & Optical Tech Letters

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“…Next, to meet the wideband requirement of modern communication systems, microwave devices with wide bandwidth and compact size are in demand. Several techniques have been proposed to improve the bandwidth of RRC at the cost of increased design complexity and/or circuit size [7–18]. The design complexity includes multilayer, via-holes, slots, tight coupling, lumped elements, etc.…”

Section: Introductionmentioning

confidence: 99%

“…In [11], the branches of the conventional RRC are replaced using non-uniform microstrip transmission line sections for wideband operation. In some of the reported works, phase inverters are used to realize broadband 180° hybrids [12, 16–18]. The phase inverter provides a wideband 180° phase shift by reversing the signal and ground line.…”

Section: Introductionmentioning

confidence: 99%

Highly compact wideband double-section rat-race hybrid with harmonic suppression using series and shunt stepped impedance transmission lines

Kumar

Karthikeyan

2016

Int. J. Microw. Wireless Technol.

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This paper presents the design of a size miniaturized and harmonic suppressed wideband double-section rat-race coupler (RRC). Series and shunt stepped-impedance transmission line units are proposed to replace the quarter wavelength transmission lines in the conventional design of wideband (50% fractional bandwidth) two-stage rat-race coupler. Design equations are derived using the lossless transmission line model. The proposed double-section RRC occupies only 14% area of the conventional coupler, with good return loss and isolation performances. In addition, the full-wave simulation and measured responses exhibit harmonic suppression up to at least fifth harmonic. The proposed design can be easily implemented using the standard printed circuit board etching process without any via-holes, bonding wires, and lumped elements, which make it very useful for wireless communication systems

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“…In addition, since the analysis region under the substrate (Fig. 18(d)) is that of a conventional CPW (Type 1), the line capacitance Cc is expressed as (18) with the moduli k 7 and k 7 ′ in (19). Therefore, the total line capacitance C6 of Type 6 is obtained as a series connection of two capacitances [40].…”

mentioning

confidence: 99%

Generalized Design Technique of Ultra-Wideband Transitions for Quasi-TEM Planar Transmission Lines Based on Analytical Models

et al. 2021

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A generalized design technique of ultra-wideband planar transitions using EM-based analytical models is presented in this paper. Among various planar transmission lines, each transmission line has unique advantages over other line types, and a microwave component in a system can be designed to perform much better if it is implemented on a certain type of transmission line. Therefore, low-loss and high-performance transitions between transmission lines, with easy integrability with the main circuit board, are needed. The proposed transition design technique uses the Schwarz-Christoffel transformation, which is one of conformal mapping methods, and can be applied to design any planar transition between a pair combination of planar transmission lines based on TEM or quasi-TEM waves. To optimally match the characteristic line impedance and smoothly transform the electromagnetic field distribution between the planar transmission lines, entire cross-sections through the planar transition should be analyzed with proper models. In this paper, the crosssections of planar transitions are categorized into 4 cross-sectional models, where each cross-section is divided into multiple regions for the analysis to obtain line capacitance. Therefore, for the 4 cross-sectional models, 7 types of basis structures are identified to obtain their capacitances by applying conformal mapping. By adding capacitances of a combination of the 7 analysis types, the total line capacitance, thus the characteristic line impedance, of any cross-sectional model of the planar transition can be obtained. The characteristic line impedance of each cross-sectional model calculated with the proposed analytical formulas is compared with the 3D EM calculations, and it is found that the deviated values are mostly well under 6%. This proposed technique enables to design various planar transitions efficiently and quickly for the maximum performance without parameter tuning trials, by providing optimal impedance matching and smooth field transformation up to mm-wave frequencies.INDEX TERMS Conformal mapping, cross-sectional model, planar transition, planar transmission line, Schwarz-Christoffel transformation.

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A compact wideband ring mixer utilizing a pair of PLANAR transitions for phase inversion

Cited by 5 publications

References 11 publications

Miniaturization of a single‐ended mixer using T‐shaped Wilkinson power combiner for medical wireless communication applications

Miniaturization of a single‐ended mixer using T‐shaped Wilkinson power combiner for medical wireless communication applications

Highly compact wideband double-section rat-race hybrid with harmonic suppression using series and shunt stepped impedance transmission lines

Generalized Design Technique of Ultra-Wideband Transitions for Quasi-TEM Planar Transmission Lines Based on Analytical Models

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