Analysis and design of complex impedance transforming marchand baluns

Rasmus Schandorph Michaelsen; Tom Keinicke Johansen; Kjeld M. Tamborg

doi:10.1109/MIKON.2014.6899854

Analysis and design of complex impedance transforming marchand baluns

Rasmus Schandorph Michaelsen, Tom Keinicke Johansen, Kjeld M. Tamborg

Weibel Scientific A/S

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

A new type of Marchand balun is presented in this paper, which has the property of complex impedance transformation. To allow the Marchand balun to transform between arbitrary complex impedances, three reactances should be added to the circuit. A detailed analysis of the circuit gives the governing equations. To verify the theory, a design and electromagnetic simulation of a lumped element Marchand balun is made in a SiGe BiCMOS technology. The lumped element impementation is favorable because capacitors are placed where the additional reactances should be added. Thus it is possible to absorb a positive reactance by reducing a capacitor. At the design frequency of 10.5 GHz it matches 50Ω to 50 - j66Ω. It has an insertion loss of 5.1 dB, an input reflection of −20.8 dB, as well as phase and magnitude imbalance better than 0.2° and 0.12 dB, respectively.

Original language	English
Title of host publication	Proceedings of 2014 20th International Conference on Microwaves, Radar, and Wireless Communications
Number of pages	4
Publisher	IEEE
Publication date	2014
ISBN (Print)	9786176075530
DOIs	https://doi.org/10.1109/MIKON.2014.6899854
Publication status	Published - 2014
Event	20th International Conference on Microwaves, Radar, and Wireless Communications - Mercure Hotel, Gdansk, Poland Duration: 16 Jun 2014 → 18 Jun 2014 Conference number: 20

Conference

Conference	20th International Conference on Microwaves, Radar, and Wireless Communications
Number	20
Location	Mercure Hotel
Country/Territory	Poland
City	Gdansk
Period	16/06/2014 → 18/06/2014

Keywords

Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Balun
Capacitors
Complex impedance transformation
Impedance
Impedance matching
Integrated circuit modeling
Marchand balun
Mathematical model
Microwave theory and techniques
MMIC
Ports (Computers)

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06899854

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title = "Analysis and design of complex impedance transforming marchand baluns",

abstract = "A new type of Marchand balun is presented in this paper, which has the property of complex impedance transformation. To allow the Marchand balun to transform between arbitrary complex impedances, three reactances should be added to the circuit. A detailed analysis of the circuit gives the governing equations. To verify the theory, a design and electromagnetic simulation of a lumped element Marchand balun is made in a SiGe BiCMOS technology. The lumped element impementation is favorable because capacitors are placed where the additional reactances should be added. Thus it is possible to absorb a positive reactance by reducing a capacitor. At the design frequency of 10.5 GHz it matches 50Ω to 50 - j66Ω. It has an insertion loss of 5.1 dB, an input reflection of −20.8 dB, as well as phase and magnitude imbalance better than 0.2° and 0.12 dB, respectively.",

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booktitle = "Proceedings of 2014 20th International Conference on Microwaves, Radar, and Wireless Communications",

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note = "20th International Conference on Microwaves, Radar, and Wireless Communications, 2014 MIKON ; Conference date: 16-06-2014 Through 18-06-2014",

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Michaelsen, RS, Johansen, TK & Tamborg, KM 2014, Analysis and design of complex impedance transforming marchand baluns. in Proceedings of 2014 20th International Conference on Microwaves, Radar, and Wireless Communications. IEEE, 20th International Conference on Microwaves, Radar, and Wireless Communications, Gdansk, Poland, 16/06/2014. https://doi.org/10.1109/MIKON.2014.6899854

Analysis and design of complex impedance transforming marchand baluns. / Michaelsen, Rasmus Schandorph; Johansen, Tom Keinicke; Tamborg, Kjeld M.
Proceedings of 2014 20th International Conference on Microwaves, Radar, and Wireless Communications. IEEE, 2014.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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N2 - A new type of Marchand balun is presented in this paper, which has the property of complex impedance transformation. To allow the Marchand balun to transform between arbitrary complex impedances, three reactances should be added to the circuit. A detailed analysis of the circuit gives the governing equations. To verify the theory, a design and electromagnetic simulation of a lumped element Marchand balun is made in a SiGe BiCMOS technology. The lumped element impementation is favorable because capacitors are placed where the additional reactances should be added. Thus it is possible to absorb a positive reactance by reducing a capacitor. At the design frequency of 10.5 GHz it matches 50Ω to 50 - j66Ω. It has an insertion loss of 5.1 dB, an input reflection of −20.8 dB, as well as phase and magnitude imbalance better than 0.2° and 0.12 dB, respectively.

AB - A new type of Marchand balun is presented in this paper, which has the property of complex impedance transformation. To allow the Marchand balun to transform between arbitrary complex impedances, three reactances should be added to the circuit. A detailed analysis of the circuit gives the governing equations. To verify the theory, a design and electromagnetic simulation of a lumped element Marchand balun is made in a SiGe BiCMOS technology. The lumped element impementation is favorable because capacitors are placed where the additional reactances should be added. Thus it is possible to absorb a positive reactance by reducing a capacitor. At the design frequency of 10.5 GHz it matches 50Ω to 50 - j66Ω. It has an insertion loss of 5.1 dB, an input reflection of −20.8 dB, as well as phase and magnitude imbalance better than 0.2° and 0.12 dB, respectively.

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KW - Components, Circuits, Devices and Systems

KW - Fields, Waves and Electromagnetics

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KW - Capacitors

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KW - Impedance

KW - Impedance matching

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KW - Marchand balun

KW - Mathematical model

KW - Microwave theory and techniques

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BT - Proceedings of 2014 20th International Conference on Microwaves, Radar, and Wireless Communications

PB - IEEE

T2 - 20th International Conference on Microwaves, Radar, and Wireless Communications

Y2 - 16 June 2014 through 18 June 2014

ER -

Analysis and design of complex impedance transforming marchand baluns

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