New technique to measure transmission line attenuation

High Temperature Characteristics of Coplanar Waveguide on R-Plane Sapphire and Alumina

“…Since the two stub lengths vary by a factor of three, some of the resonances occur at the same frequency, and the effect of the parasitic reactance may be subtracted. From the resonant frequency and the stub length, ε eff may be calculated [21], [22]. The attenuation may also be calculated from the quality factor, Q, of each resonance and a measurement of |S 21 | at the resonant frequency [22].…”

Conductor and dielectric‐property extraction using microstrip tee resonators

“…For low-loss lines, the loaded and unloaded Q-factors are approximately equal. The total attenuation is related to the unloaded Q-factor as follows [1]:…”

“…Tee resonators have been used to determine the relative permittivity and loss tangent of dielectric substrates when the conductor properties were known [1][2][3]. The basic principal is that an open-ended transmission-line stub appears as a short circuit at periodic frequencies.…”

Performance of Cu‐ and Ag‐based microstrips up to millimetre wave frequencies

“…The fabrication method used may, however, have a great effect on the conductivity. It has been reported, for example, that the attenuation coefficients for plated gold microstrips on GaAs were found to be 38 per cent higher than previously published data on evaporated gold microstrips (Carroll et al, 1995). Because the bulk conductivity given in literature may be misleading in the calculation of the resistive loss of the microstrip a firm knowledge of attenuation for practical circuit design purposes, corresponding to each manufacturing technique, can be achieved by direct measurements.…”