Patent ID: 6448873
Filing Date: 2002-09-10
Classification: H01F,H03H,H05K

Abstract:
A suspended printed resonant circuit, comprising:a substrate onto which circuit elements can be printed; a first electrically conductive trace printed onto said substrate, said first electrically conductive trace shaped so as to form an inductor at high radio frequencies of interest; a second electrically conductive trace printed onto said substrate, said second electrically conductive trace shaped so as to form an interdigital capacitor at the high radio frequencies of interest, said interdigital capacitor electrically connected in parallel to said inductor so as to form a parallel resonant circuit, the resonant frequency of said parallel resonant circuit being substantially independent of variations in the width of said first electrically conductive trace and said second electrically conductive trace; and wherein an area of said substrate underlying entirely said first electrically conductive trace and said second electrically conductive trace is devoid of electrical traces extending into said area from an area of said substrate external to said area of said substrate underlying said first electrically conductive trace and said second electrically conductive trace.