A COMPLEX IMPEDANCE-TRANSFORMING COUPLED-LINE BALUN | Zendy

Weiwei Zhang | Zendy; Yuanan Liu | Zendy; Yongle Wu | Zendy; Weimin Wang | Zendy; Ming Su | Zendy; Jinchun Gao | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

A COMPLEX IMPEDANCE-TRANSFORMING COUPLED-LINE BALUN

Author(s) -

Weiwei Zhang,

Yuanan Liu,

Yongle Wu,

Weimin Wang,

Ming Su,

Jinchun Gao

Publication year - 2014

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl14062402

Subject(s) - balun , electrical impedance , line (geometry) , computer science , physics , electrical engineering , engineering , telecommunications , mathematics , antenna (radio) , geometry

An asymmetrical coupled-line circuit is proposed to design a planar microstrip balun, which has the advantages of compact structure and complex source to complex load impedance transformation. This balun consists of three pairs of coupled lines and two tapped transmission-line stubs. Based on the traditional even-odd mode technique and ABCD parameters, closed-form mathematical equations for circuit electrical parameters are obtained. To demonstrate our design theory, a practical microstrip balun is designed, simulated and measured. The results show that the return loss is larger than 25 dB, the insertion loss S21 (S31) 3.15 dB (3.29 dB), and the output phase difference 180.22 ◦ at the operating frequency. Good agreements between the simulated and measured results verify our design theory.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research