The design of a miniaturized frequency-tunable circularly polarized twin dual folded inverted-L antenna with varactor-loaded Broadside Coupled split-sing resonator(BC-SRR) structure is proposed in the paper. The design integrates two linearly polarized inverted-L antenna elements with double-folded arms and with a varactor-loaded Broadside Coupled split-sing resonator(BC-SRR) structures on both sides. To improve the impedance matching and radiation characteristics the double-folded structure plays a significant role. Although the use of BC-SRRs to the dual inverted-L antenna elements achieves compact volume, the antenna’s radiation efficiency rapidly decreases around the SRR’s resonant frequency. The decrease is avoided by employing a variable capacitance diode loaded on both BC-SRR structures (VLBC-SRR). The antenna is structure is minimized is to be about 66 mm in length, 10 mm width, and 1 mm in height (66 x 10 x 1mm3 ).The configuration is simplified by using wave feeding, The better values are obtained between the theoretical calculations and simulated results, which validate the design concept and has a wide varactor tuning bandwidth. The simulated and measured results show that the proposed antennas resonate at multi-band frequencies, The band-1 (1.87 – 2.51GHz) with varactor tuning of 645MHz,the band-2 (3.72 – 4.22GHz) with varactor tuning of 500MHz, the band-3 (5.27 – 6.03GHz) with varactor tuning of 760MHz and The band-4 (7.42-8.44GHz) with varactor tuning of 1020MHz. With the impedance bandwidth of 6%, VSWR < 2, and 3-dB axial ratio (AR) <3 across the entire operating bands.