Design of Low-Loss Coplanar Transmission Lines Using Distributed Loading for Millimeter-Wave Power Divider/Combiner Applications in 0.18-μm CMOS Technology

Anwer Sayed Abd El-Hameed, Adel Barakat, Adel B. Abdel-Rahman, Ahmed Allam, Ramesh Pokharel

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents a new type of a low-loss miniaturized coplanar-waveguide (CPW) transmission line (TL) by employing distributed loading, capacitors and inductors, in 0.18-μm complementary metal-oxide-semiconductor (CMOS) technology. The capacitors are realized by vertical parallel plates made of vias, and a group of open stubs inserted to the signal line, whereas the inductors are realized by high impedance lines. Then, the proposed CPW-TL is employed to design a miniaturized millimeter wave ultra-wideband low-loss Wilkinson power divider/combiner (WPD/C). The proposed distributed loading results in reducing each WPD/C arm length by more than 50% without changing its characteristic impedance and insertion loss (IL). The design is fabricated in 0.18-μm CMOS technology and tested. The measured results show a wideband performance from dc to 67 GHz with 1-dB IL and isolation greater than 15 dB from 36 to 67 GHz. In addition, the fabricated WPD/C achieves an excellent amplitude imbalance and phase imbalance of less than 0.16 dB and 0.45°, respectively. The core chip size is 336 × 165 μm 2 , which is almost 32.8% compact compared to the recently proposed WPD in the same technology.

Original languageEnglish
Article number8506598
Pages (from-to)5221-5229
Number of pages9
JournalIEEE Transactions on Microwave Theory and Techniques
Volume66
Issue number12
DOIs
Publication statusPublished - Dec 1 2018

Fingerprint

Wave power
dividers
Millimeter waves
millimeter waves
transmission lines
Electric lines
CMOS
Coplanar waveguides
inductors
Insertion losses
insertion loss
capacitors
Capacitors
Metals
impedance
broadband
waveguides
Telephone lines
power loss
parallel plates

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Design of Low-Loss Coplanar Transmission Lines Using Distributed Loading for Millimeter-Wave Power Divider/Combiner Applications in 0.18-μm CMOS Technology. / Abd El-Hameed, Anwer Sayed; Barakat, Adel; Abdel-Rahman, Adel B.; Allam, Ahmed; Pokharel, Ramesh.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 66, No. 12, 8506598, 01.12.2018, p. 5221-5229.

Research output: Contribution to journalArticle

@article{7b64fff3d28641a78b1c310104426294,
title = "Design of Low-Loss Coplanar Transmission Lines Using Distributed Loading for Millimeter-Wave Power Divider/Combiner Applications in 0.18-μm CMOS Technology",
abstract = "This paper presents a new type of a low-loss miniaturized coplanar-waveguide (CPW) transmission line (TL) by employing distributed loading, capacitors and inductors, in 0.18-μm complementary metal-oxide-semiconductor (CMOS) technology. The capacitors are realized by vertical parallel plates made of vias, and a group of open stubs inserted to the signal line, whereas the inductors are realized by high impedance lines. Then, the proposed CPW-TL is employed to design a miniaturized millimeter wave ultra-wideband low-loss Wilkinson power divider/combiner (WPD/C). The proposed distributed loading results in reducing each WPD/C arm length by more than 50{\%} without changing its characteristic impedance and insertion loss (IL). The design is fabricated in 0.18-μm CMOS technology and tested. The measured results show a wideband performance from dc to 67 GHz with 1-dB IL and isolation greater than 15 dB from 36 to 67 GHz. In addition, the fabricated WPD/C achieves an excellent amplitude imbalance and phase imbalance of less than 0.16 dB and 0.45°, respectively. The core chip size is 336 × 165 μm 2 , which is almost 32.8{\%} compact compared to the recently proposed WPD in the same technology.",
author = "{Abd El-Hameed}, {Anwer Sayed} and Adel Barakat and Abdel-Rahman, {Adel B.} and Ahmed Allam and Ramesh Pokharel",
year = "2018",
month = "12",
day = "1",
doi = "10.1109/TMTT.2018.2873381",
language = "English",
volume = "66",
pages = "5221--5229",
journal = "IEEE Transactions on Microwave Theory and Techniques",
issn = "0018-9480",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "12",

}

TY - JOUR

T1 - Design of Low-Loss Coplanar Transmission Lines Using Distributed Loading for Millimeter-Wave Power Divider/Combiner Applications in 0.18-μm CMOS Technology

AU - Abd El-Hameed, Anwer Sayed

AU - Barakat, Adel

AU - Abdel-Rahman, Adel B.

AU - Allam, Ahmed

AU - Pokharel, Ramesh

PY - 2018/12/1

Y1 - 2018/12/1

N2 - This paper presents a new type of a low-loss miniaturized coplanar-waveguide (CPW) transmission line (TL) by employing distributed loading, capacitors and inductors, in 0.18-μm complementary metal-oxide-semiconductor (CMOS) technology. The capacitors are realized by vertical parallel plates made of vias, and a group of open stubs inserted to the signal line, whereas the inductors are realized by high impedance lines. Then, the proposed CPW-TL is employed to design a miniaturized millimeter wave ultra-wideband low-loss Wilkinson power divider/combiner (WPD/C). The proposed distributed loading results in reducing each WPD/C arm length by more than 50% without changing its characteristic impedance and insertion loss (IL). The design is fabricated in 0.18-μm CMOS technology and tested. The measured results show a wideband performance from dc to 67 GHz with 1-dB IL and isolation greater than 15 dB from 36 to 67 GHz. In addition, the fabricated WPD/C achieves an excellent amplitude imbalance and phase imbalance of less than 0.16 dB and 0.45°, respectively. The core chip size is 336 × 165 μm 2 , which is almost 32.8% compact compared to the recently proposed WPD in the same technology.

AB - This paper presents a new type of a low-loss miniaturized coplanar-waveguide (CPW) transmission line (TL) by employing distributed loading, capacitors and inductors, in 0.18-μm complementary metal-oxide-semiconductor (CMOS) technology. The capacitors are realized by vertical parallel plates made of vias, and a group of open stubs inserted to the signal line, whereas the inductors are realized by high impedance lines. Then, the proposed CPW-TL is employed to design a miniaturized millimeter wave ultra-wideband low-loss Wilkinson power divider/combiner (WPD/C). The proposed distributed loading results in reducing each WPD/C arm length by more than 50% without changing its characteristic impedance and insertion loss (IL). The design is fabricated in 0.18-μm CMOS technology and tested. The measured results show a wideband performance from dc to 67 GHz with 1-dB IL and isolation greater than 15 dB from 36 to 67 GHz. In addition, the fabricated WPD/C achieves an excellent amplitude imbalance and phase imbalance of less than 0.16 dB and 0.45°, respectively. The core chip size is 336 × 165 μm 2 , which is almost 32.8% compact compared to the recently proposed WPD in the same technology.

UR - http://www.scopus.com/inward/record.url?scp=85055726512&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85055726512&partnerID=8YFLogxK

U2 - 10.1109/TMTT.2018.2873381

DO - 10.1109/TMTT.2018.2873381

M3 - Article

AN - SCOPUS:85055726512

VL - 66

SP - 5221

EP - 5229

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

SN - 0018-9480

IS - 12

M1 - 8506598

ER -