Fig. 7
From: CMOS voltage-controlled oscillator with high-performance MEMS tunable inductor
Power spectra which show the oscillation frequency according to the operation of the tunable inductor. a When all switches were OFF, the oscillation frequency was 1.39 GHz and the power was − 3.03 dBm. b When switch 1 was ON, the oscillation frequency was 1.98 GHz, and the power was − 5.80 dBm. c When switch 2 was in the ON state, the oscillation frequency was 2.82 GHz, and the power was − 7.44 dBm. d When the switch 3 was in the ON state, the oscillation frequency was 3.68 GHz, and the power was − 8.77 dBm