An electrical connector, comprising: a dielectric base; a plurality of ground or power contacts in the dielectric base; a plurality of signal contacts in the dielectric base and angled relative to the ground or power contacts; and a plurality of solder balls secured to the mounting ends of the ground or power contacts and the signal contacts. Inductive elements that interconnect parallel resonators with ground are electromagnetically coupled to one another. Energy loss is determined at the front of the element signal, and an energy loss is determined in the range of the element signal. Bottom guides are mounted to the bottom support member, and top guides are mounted to the top support member. The polyalkylene glycol-based polymer includes: a structure unit derived from a polyalkylene glycol-based monomer of a specific structure, and a structure unit derived from a carboxyl group-containing monomer at specific ratios.