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1. A sensor to non-invasively detect a concentration of biomarkers comprising: a miniaturized electromagnetic based passive microwave circuitry to extract an electrical property of a body constituent the miniaturized electromagnetic based passive microwave circuitry targeting at least one of radial, median, cephalic, or ulnar arteries comprising, a sensing device to be placed near the body; an RF energy source; an RF energy converter to convert RF energy into phase and magnitude parameters; a phase and magnitude converter to provide concentration information of the body constituent; wherein the microwave circuitry covers a microwave spectrum and the microwave circuitry reacts to loading by the body constituent; wherein the microwave circuitry is reconfigurable to allow frequency tuning, the microwave circuitry includes a plurality of open loop resonators ranging between 1.5 GHZ and 2.5 GHz to operate as a multiband and reconfigurable filter; the microwave circuitry attains a high sensitivity to lossy material over a 1.25 and 2.25 GHz frequency span; eight stop bands ranging between 1.5 GHz and 2.5 GHz and the eight stop bands are separated by seven pass bands.
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