3963
Scattering parameter measurements establish that the polymer and iron-core inductors , combined with a 45°-polymer support structure , can achieve usable bandwidths up to 18 GHz and 40 GHz , respectively , with low insertion loss .
 parameter, polymer, support structure
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 parameter, polymer, support structure