A system comprising: an implantable antenna configured to wirelessly transfer information electromagnetically at a specified operating frequency, the specified operating frequency provided using a specific configuration of a portion of the implantable antenna; and an implantable dielectric compartment coupled to an implantable device housing, the implantable dielectric compartment including: a channel in an outer surface of the implantable dielectric compartment; a first interlocking feature (125, 126, 127); a cap coupled to the channel, the cap configured to cover a portion of the implantable antenna along the channel and the cap including a second interlocking feature (130, 131, 132), the first (125, 126, 127) and second interlocking features (130, 131, 132) configured to couple the cap to the channel; and wherein the channel is configured to constrain the portion of the implantable antenna in the specific configuration along the length of the portion of the implantable antenna, characterized in that the second interlocking feature (130, 131, 132) of the cap includes a male connector and the first interlocking feature (125, 126, 127) includes a female connector on the implantable dielectric compartment, or the second interlocking feature (130, 131, 132) of the cap includes a female connector configured to interact with the corresponding first interlocking feature (125, 126, 127) on the implantable dielectric compartment. an implantable antenna configured to wirelessly transfer information electromagnetically at a specified operating frequency, the specified operating frequency provided using a specific configuration of a portion of the implantable antenna; and an implantable dielectric compartment coupled to an implantable device housing, the implantable dielectric compartment including: a channel in an outer surface of the implantable dielectric compartment; a first interlocking feature (125, 126, 127); a cap coupled to the channel, the cap configured to cover a portion of the implantable antenna along the channel and the cap including a second interlocking feature (130, 131, 132), the first (125, 126, 127) and second interlocking features (130, 131, 132) configured to couple the cap to the channel; and wherein the channel is configured to constrain the portion of the implantable antenna in the specific configuration along the length of the portion of the implantable antenna, characterized in that the second interlocking feature (130, 131, 132) of the cap includes a male connector and the first interlocking feature (125, 126, 127) includes a female connector on the implantable dielectric compartment, or the second interlocking feature (130, 131, 132) of the cap includes a female connector configured to interact with the corresponding first interlocking feature (125, 126, 127) on the implantable dielectric compartment. a channel in an outer surface of the implantable dielectric compartment; a first interlocking feature (125, 126, 127); a cap coupled to the channel, the cap configured to cover a portion of the implantable antenna along the channel and the cap including a second interlocking feature (130, 131, 132), the first (125, 126, 127) and second interlocking features (130, 131, 132) configured to couple the cap to the channel; and wherein the channel is configured to constrain the portion of the implantable antenna in the specific configuration along the length of the portion of the implantable antenna, characterized in that the second interlocking feature (130, 131, 132) of the cap includes a male connector and the first interlocking feature (125, 126, 127) includes a female connector on the implantable dielectric compartment, or the second interlocking feature (130, 131, 132) of the cap includes a female connector configured to interact with the corresponding first interlocking feature (125, 126, 127) on the implantable dielectric compartment.