Abstract
A viable wide-band circuit model of parallel corrugated differential transmission line is established. By solving for the even- and odd-modes in this structured differential transmission line, the equivalent capacitance, inductance, resistance, and conductance per unit length are calculated, then the characteristic impedances of differential and common signals are obtained. The ${S}$ -parameters obtained from the equivalent circuit model agree well with the full-wave simulation results with a deviation of only about 0.036 dB in the frequency range of 10 GHz. Experimentally, the characteristic impedances are measured for the differential and common signals using a time domain reflectometer (TDR). The deviation between the experimental and theoretical results was less than 1.05%. Based on the equivalent circuit model, it is feasible to implement this type of structured differential line directly into real circuits.
Highlights
W ITH higher frequency and smaller circuit board area, the crosstalk between adjacent transmission lines becomes much more serious
EXPERIMENTAL RESULTS Being established the viability of the equivalent circuit model in extracting the circuit parameters that can satisfactorily reflect the signals transmitting in the unilateral subwavelength periodic differential microstrip line (USPDML), we use the time domain time domain reflectometer (TDR) to measure the characteristic impedance of the differential and common signals of the USPDML
The characteristic impedance of the common signal characteristic impedance varies between 32.07 Ω and 32.608 Ω, as shown in Fig. 8(g) and the value at t = 1 ns is 32.489 Ω, which has an even smaller deviation of about 0.75% as compared with the numerical value of 32.7345 Ω. It is obvious from the results described above that the characteristic impedance of the USPDML performance such difference may be due to the etching error of the printed circuit board (PCB) substrate
Summary
W ITH higher frequency and smaller circuit board area, the crosstalk between adjacent transmission lines becomes much more serious. By introducing subwavelength periodic structure, a new kind of differential microstrip lines has been demonstrated to exhibit substantial suppression on coupling and common signal effect, compared to CDML [27], [28].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
