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SiGe BiCMOS balanced transmission line based on coplanar waveguide and split ring resonator
Author(s) -
Serrano Enrique,
Borja Alejandro L.,
Boccia Luigi,
Cascon Joaquin,
Ibrahim Safwat,
Calzona D.,
Amendola G.
Publication year - 2016
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/2016rs006033
Subject(s) - passband , resonator , transmission line , center frequency , coplanar waveguide , bicmos , bandwidth (computing) , insertion loss , materials science , split ring resonator , optoelectronics , electric power transmission , electrical engineering , band pass filter , physics , optics , telecommunications , microwave , computer science , engineering , voltage , transistor
In this work, the design of a right‐/left‐handed composite transmission line implementation with passband characteristics is demonstrated on 0.13 µm silicon‐germanium bipolar CMOS (SiGe BiCMOS) technology. The proposed structure is formed by a shorted coplanar waveguide transmission line loaded with split ring resonators (SRRs). As it will be shown, by controlling the geometry of the SRRs as well as their electric coupling with the host line, it is possible to achieve a balanced passband response with widespread bandwidth at millimeter wave frequencies. Besides, this paper introduces a configuration that allows to significantly lower the resonant frequency of the SRRs by loading the rings with Metal‐Insulator‐Metal capacitors. It will be illustrated how this approach allows to reduce the center band frequency of about 40% preserving the balanced behavior and without increasing the resonator size. Finally, the proposed design was experimentally validated with a prototype exhibiting an extended passband with a fractional bandwidth of 19.3% and −3.2 dB of insertion loss around the central frequency of 60 GHz. The use of these transmission lines can be foreseeing in high‐capacity millimeter wave communication systems which require compact passband blocks integrated on chip.