Miniature ultra-wideband power divider using bridged T-coils

Yo Shen Lin; Jun Hua Lee

doi:10.1109/LMWC.2012.2205231

Miniature ultra-wideband power divider using bridged T-coils

Yo Shen Lin, Jun Hua Lee

Department of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

In this work, a miniature ultra-wideband (UWB) power divider (PD) is proposed. By implementing the transmission lines of a two-stage Wilkinson PD using bridged T-coils, very compact size with no reduction in bandwidth can be achieved. Specifically, a proposed UWB two-way PD with a center frequency f ₀=5.5 GHz is implemented using the commercial GaAs pHEMT process. The circuit size without pads is only 1.45 mm × 0.84 mm, which is about 0.027 λ ₀ × 0.016 λ ₀ at f ₀. The fractional bandwidth for 15-dB input/output return loss and isolation is 110%, and the in-band insertion loss is within 1.3 ± 0.36 dB.

Original language	English
Article number	6232473
Pages (from-to)	391-393
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	22
Issue number	8
DOIs	https://doi.org/10.1109/LMWC.2012.2205231
State	Published - 2012

Keywords

(PD)
Bridged T coil
GaAs
lumped-element
p.d
power divider
ultra-wideband (UWB)

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10.1109/LMWC.2012.2205231

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title = "Miniature ultra-wideband power divider using bridged T-coils",

abstract = "In this work, a miniature ultra-wideband (UWB) power divider (PD) is proposed. By implementing the transmission lines of a two-stage Wilkinson PD using bridged T-coils, very compact size with no reduction in bandwidth can be achieved. Specifically, a proposed UWB two-way PD with a center frequency f 0=5.5 GHz is implemented using the commercial GaAs pHEMT process. The circuit size without pads is only 1.45 mm × 0.84 mm, which is about 0.027 λ 0 × 0.016 λ 0 at f 0. The fractional bandwidth for 15-dB input/output return loss and isolation is 110%, and the in-band insertion loss is within 1.3 ± 0.36 dB.",

keywords = "(PD), Bridged T coil, GaAs, lumped-element, p.d, power divider, ultra-wideband (UWB)",

author = "Lin, {Yo Shen} and Lee, {Jun Hua}",

note = "Funding Information: Manuscript received March 14, 2012; revised June 05, 2012; accepted June 12, 2012. Date of publication July 05, 2012; date of current version August 03, 2012. This work was supported in part by the National Science Council of Taiwan under Grant NSC 99-2221-E-008-096-MY3 and Grant NSC 100-2628-E-008-010-MY3, and by the National Center for High-Performance Computing, Taiwan.",

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AU - Lee, Jun Hua

N1 - Funding Information: Manuscript received March 14, 2012; revised June 05, 2012; accepted June 12, 2012. Date of publication July 05, 2012; date of current version August 03, 2012. This work was supported in part by the National Science Council of Taiwan under Grant NSC 99-2221-E-008-096-MY3 and Grant NSC 100-2628-E-008-010-MY3, and by the National Center for High-Performance Computing, Taiwan.

PY - 2012

Y1 - 2012

N2 - In this work, a miniature ultra-wideband (UWB) power divider (PD) is proposed. By implementing the transmission lines of a two-stage Wilkinson PD using bridged T-coils, very compact size with no reduction in bandwidth can be achieved. Specifically, a proposed UWB two-way PD with a center frequency f 0=5.5 GHz is implemented using the commercial GaAs pHEMT process. The circuit size without pads is only 1.45 mm × 0.84 mm, which is about 0.027 λ 0 × 0.016 λ 0 at f 0. The fractional bandwidth for 15-dB input/output return loss and isolation is 110%, and the in-band insertion loss is within 1.3 ± 0.36 dB.

AB - In this work, a miniature ultra-wideband (UWB) power divider (PD) is proposed. By implementing the transmission lines of a two-stage Wilkinson PD using bridged T-coils, very compact size with no reduction in bandwidth can be achieved. Specifically, a proposed UWB two-way PD with a center frequency f 0=5.5 GHz is implemented using the commercial GaAs pHEMT process. The circuit size without pads is only 1.45 mm × 0.84 mm, which is about 0.027 λ 0 × 0.016 λ 0 at f 0. The fractional bandwidth for 15-dB input/output return loss and isolation is 110%, and the in-band insertion loss is within 1.3 ± 0.36 dB.

KW - (PD)

KW - Bridged T coil

KW - GaAs

KW - lumped-element

KW - p.d

KW - power divider

KW - ultra-wideband (UWB)

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SN - 1531-1309

VL - 22

SP - 391

EP - 393

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 8

M1 - 6232473

ER -

Miniature ultra-wideband power divider using bridged T-coils

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Keywords

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