A conceptual method to realize an impedance-matched electrically small antenna is discussed, using a transmission line modulated only in time. The time-periodic space-uniform modulation of distributed shunt array varcapacitors excites mode with very frequency but still (microwave) wavelength: the matching then retains practical size. brings problem impedance $f_0$ much higher than signal, where...

Abstract Though the Lovibond colorimetric method is effective for determining oil colour, it a visual comparison which relies on manual reading. As result, this vulnerable to influence of subjective factors testers and low accuracy. In paper, original index colour grading based space changed uniform space, new proposed determine by spectrophotometry. The experimental results show that there str...