Konferensartikel

Broadband small size Balun built with Lumped Components

Dan Kuylenstierna
Chalmers University of Technology, Sweden

Peter Linnér
Chalmers University of Technology, Sweden

Ladda ner artikelhttp://www.ep.liu.se/ecp_article/index.en.aspx?issue=008;article=050

Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:50, s.

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Publicerad: 2003-11-06

ISBN:

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

A Small size broadband lumped element balun is presented. Analytical expressions for the component values are derived from cascade analysis. The design is a development of the out-of-phase power splitter of second order. This balun maintains the same amplitude balance as the out-of-phase power splitter; but has substantially improved phase balance; and a reduced size. With ideal components the phase balance is 0°; and the amplitude balance less than +/- 0.2dB over more than one octave bandwidth. An experimental demonstrator fabricated by chip components soldered on 0.8 mm PTFE laminate verifies the performance qualitatively. The size of the demonstrator; designed for 3 GHz; is 6*6 mm2.

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Referenser

[1] R. Sturdivant;”Balun Designs for Wireless …Mixers; Amplifiers and Antennas”; Applied Microwave; Summer 1993

[2] Yeong J Yoon; et al. “Design and Characterization of Multilayer Spiral Transmission-Line Baluns”; IEEE Microwave theory thech.; Vol. 47; No 9; Sep. 1999; pp 1841-1847

[3] Samuel J. Parisi; “180o Lumped Hybrid”;IEEE MTT-S Digest;1989

[4] Hwann-Kaeo Chiou; Hao_Hsiung Lin; and Chi-Yang Chang; “Lumped-Element Compensated High/Low-Pass Balun for MMIC Double balanced Mixer”; IEEE Microwave and Guided Wave Letter; Vol 7; No. 8; Aug 1997

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