Wide-band balun using composite right/left-handed transmission line

Tseng, Chao‐Hsiung; Chang, Chih-Lin

doi:10.1049/el:20071759

Cited by 23 publications

(24 citation statements)

References 4 publications

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“…From (14), the most remarkable property is that neither M nor N no longer depend on the number of conductors and are determined by only a function of θ d . Therefore, regardless of the number of conductors, if the even and odd mode impedances Z oe and Z oo are selected according to (12) and (13), all previous equations are drastically simplified.…”

Section: Theoretical Study Of Open-and Short-circuited Wire-bonded Mtlsmentioning

confidence: 99%

“…Besides, two singularities are observed, θ 1 and θ 2 , which are the poles of both functions in (15) and determine the frequency range where Figure 3. Real part of normalized image impedances for two shortand open-circuited MTL designed by means of (12) and (13) From (14), equations for S-parameters, (7a) and (7b), can be also simplified as…”

Section: Theoretical Study Of Open-and Short-circuited Wire-bonded Mtlsmentioning

confidence: 99%

“…The first section is a power divider which provides two well-balanced equal amplitude in-phase signals over a broad frequency range. The second section provides −90 degrees and +90 degrees phase shift over these two signals, so the balanced output signals have a 180 degree phase difference [10][11][12][13][14]. A Wilkinson inphase power divider has been usually employed for the power splitter due to its broadband operation and good input/output match and isolation.…”

Section: Introductionmentioning

confidence: 99%

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Generalized Analytical Design of Broadband Planar Baluns Based on Wire-Bonded Multiconductor Transmission Lines

Sanchez-Martinez¹,

Márquez-Segura²

2013

PIER

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Abstract-A novel generalized design procedure of broadband planar baluns based on wire-bonded multiconductor transmission lines (MTL) is presented hereby based on analytical equations. The proposed balun consists of two parts. The first one is an in-phase power divider, which equally splits the input power through its two outputs. The later are two MTLs with wire bonding between alternate conductors configured to introduce +90 and −90 degrees phase shift respectively, so that the balanced output signal has a 180 degree phase difference. In that sense, new closed-form design equations in order to calculate the design parameters of both multiconductor elements are obtained. These equations allow the proper dimensions of both MTLs to be computed irrespective of both the number of conductors and the coupling factor, and therefore, to determine the performance of the balun. The design procedure for wire-bonded MTL baluns has been assessed by means of full-wave electromagnetic simulations and by experimental work. In addition, the very good agreement between the theoretical results and measurements makes possible to define a time-saving design methodology.

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Section: Theoretical Study Of Open-and Short-circuited Wire-bonded Mtlsmentioning

confidence: 99%

Section: Theoretical Study Of Open-and Short-circuited Wire-bonded Mtlsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Generalized Analytical Design of Broadband Planar Baluns Based on Wire-Bonded Multiconductor Transmission Lines

Sanchez-Martinez¹,

Márquez-Segura²

2013

PIER

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“…Recently, the microwave applications of left-handed transmission lines (LHTLs) have attracted wide attention [2][3][4][5][6][7][8]. Unlike conventional right-handed transmission lines (RHTLs), LHTLs show negative phase propagation, which is a property of metamaterials.…”

Section: Introductionmentioning

confidence: 99%

Considerable Size Reduction of Dipole Antenna with a Compact and Broadband Balun

Han¹,

Kim²,

Kim³

2016

Journal of Electrical Engineering and Technology

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-A compact and broadband balun is designed using a conventional right-handed transmission line (RHTL) and a left-handed transmission line (LHTL) with lumped elements only. The proposed balun maintains a phase difference of 180° ± 12° at the output ports for the frequency range of 1.27 GHz-2.69 GHz. Nevertheless, the circuit size is merely 9.5 mm × 12.7 mm. To verify the performance of the proposed balun, we attached it to a dipole-type antenna and observed that the return loss is greater than 10 dB for the frequency range between 1.86 GHz and 2.57 GHz. The radiation pattern and peak gain are similar to those of the dipole antenna with a conventional balun.

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“…Recently there have been some reports on metamaterial Wilkinson baluns [5], [6]. Metamaterial transmission lines and classical Wilkinson power dividers are successfully combined together to demonstrate good performance baluns.…”

mentioning

confidence: 99%