An apparatus (100; 200), comprising: an implantable medical device comprising: a housing; an implantable telemetry circuit carried within the housing; a dielectric compartment (107; 207; 307; 907), mechanically coupled to the housing, the dielectric compartment (107; 207; 307; 907) including first and second substantially parallel face portions (308A, 308B), and a third face portion extending between the first and second face portions (308A, 308B); an implantable telemetry antenna (110; 210; 310), located at least partially within the dielectric compartment (107; 207; 307; 907); wherein the implantable telemetry circuit is electrically coupled to the implantable telemetry antenna (110; 210; 310) and configured to wirelessly transfer information electromagnetically using the implantable telemetry antenna (110; 210; 310); characterized in that the implantable telemetry antenna (110; 210; 310) comprises a spiral conductor (209B; 410A; 410B; 810; 910B) extending along and conforming to contours of the first, second, and third face portions (308A, 308B, 304); wherein the spiral conductor (209B; 410A; 410B; 810; 910B) comprises a folded planar spiral pattern including concentric turns; and wherein the folded planar spiral pattern is folded to form two planar portions located near and substantially parallel to the first and second face portions (308A, 308B) of the dielectric compartment (107; 207; 307; 907). an implantable medical device comprising: a housing; an implantable telemetry circuit carried within the housing; a dielectric compartment (107; 207; 307; 907), mechanically coupled to the housing, the dielectric compartment (107; 207; 307; 907) including first and second substantially parallel face portions (308A, 308B), and a third face portion extending between the first and second face portions (308A, 308B); an implantable telemetry antenna (110; 210; 310), located at least partially within the dielectric compartment (107; 207; 307; 907); wherein the implantable telemetry circuit is electrically coupled to the implantable telemetry antenna (110; 210; 310) and configured to wirelessly transfer information electromagnetically using the implantable telemetry antenna (110; 210; 310); characterized in that the implantable telemetry antenna (110; 210; 310) comprises a spiral conductor (209B; 410A; 410B; 810; 910B) extending along and conforming to contours of the first, second, and third face portions (308A, 308B, 304); wherein the spiral conductor (209B; 410A; 410B; 810; 910B) comprises a folded planar spiral pattern including concentric turns; and wherein the folded planar spiral pattern is folded to form two planar portions located near and substantially parallel to the first and second face portions (308A, 308B) of the dielectric compartment (107; 207; 307; 907). a housing; an implantable telemetry circuit carried within the housing; a dielectric compartment (107; 207; 307; 907), mechanically coupled to the housing, the dielectric compartment (107; 207; 307; 907) including first and second substantially parallel face portions (308A, 308B), and a third face portion extending between the first and second face portions (308A, 308B); an implantable telemetry antenna (110; 210; 310), located at least partially within the dielectric compartment (107; 207; 307; 907); wherein the implantable telemetry circuit is electrically coupled to the implantable telemetry antenna (110; 210; 310) and configured to wirelessly transfer information electromagnetically using the implantable telemetry antenna (110; 210; 310); characterized in that the implantable telemetry antenna (110; 210; 310) comprises a spiral conductor (209B; 410A; 410B; 810; 910B) extending along and conforming to contours of the first, second, and third face portions (308A, 308B, 304); wherein the spiral conductor (209B; 410A; 410B; 810; 910B) comprises a folded planar spiral pattern including concentric turns; and wherein the folded planar spiral pattern is folded to form two planar portions located near and substantially parallel to the first and second face portions (308A, 308B) of the dielectric compartment (107; 207; 307; 907).