Design of Hexadecagon Circular Patch Antenna With DGS at Ku Band for Satellite Communications

Abstract

Abstract-The design of a hexadecagon circular patch (HDCP) antenna for dual-band operation is presented in this paper. The proposed antenna operates at two resonating frequencies 13.67 GHz, 15.28 GHz with return loss of −42.18 dB, −38.39 dB, and gain 8.01 dBi, 6.01 dBi, respectively. Impedance bandwidths of 854 MHz (13.179-14.033 GHz) and 1140 MHz (14.584-15.724 GHz) are observed for the dual bands, respectively. To produce circular polarization, the HDCP antenna is incorporated with ring and square slots on the radiating patch. The defected ground structure (DGS) is considered for enhancement of gain. Axial ratio of the proposed antenna is less than 3 dB, and VSWR ≤ 2 for dual bands. The measured and simulated (HFSS, CST) results of the HDCP antenna are in agreement. The HDCP antenna can work at Ku band for satellite communications.

Epsilon‐shaped circularly polarized strip and slot‐loaded ultra‐wideband antenna for Ku‐band and K‐band

“…The conventional antennas reported in literature have limitation of large dimensions and they provide multiband/broadband CP performance at low frequencies (S, C, and X bands). The dual‐band CP bandwidths of 44.07% and 9.75% along with large IBWs obtained by the proposed antenna are found to be the highest among all the dual‐band antennas . In addition to ultra‐wide IBW and dual‐wide CP bands, the proposed antenna has miniaturized dimensions, and good gain.…”

“…The dual-band CP bandwidths of 44.07% and 9.75% along with large IBWs obtained by the proposed antenna are found to be the highest among all the dual-band antennas. 17,24 In addition to ultra-wide IBW and dual-wide CP bands, the proposed antenna has miniaturized dimensions, and good gain.…”

“…10 Further, the researchers have reported various approaches to achieve single-band/wideband/broadband/ dual-band CP antenna using different approaches, that is, dual or synchronous feed, fractal structure, multilayer reflector antennas, ground plane, or radiating patch loaded with different stubs/slits/strips. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] In these structures, multiband/broadband/wideband circular polarization was achieved by using different techniques like two asymmetric T-shaped fed line, 11 an Inverted-L strips, 12 grounded L-strip and a lightening-shaped patch with asymmetric feed, 13 three grounded L-shape strips, 14 dual fed circularly polarized square slot antenna (CPSSA) with L-shape patch, 15 two crossed dipole antenna includes meander line loaded spidron fractal patch, 16 slanting edge defected ground structure (DGS) and dual orthogonal arms, 17 two deformed parallel monopoles, 18 pair of SRR on the backside and corner truncated square slot, 19 G-shaped slot antenna with SRR loaded, 20 an I-shaped grounded stub with two parasitic elements, 21 a monopole patch with two orthogonal feeding ports, 22 a spidron fractal patch with microstrip-fed, 23 a hex decagon circular patch with defective ground structure, 24 strip and slotloaded coplanar waveguide (CPW)-fed square slot antenna with two spiral slots, 25 CPW-fed dual sense CP antenna with grounded spiral slots, 26 a compact 3D CP antenna with wide axial ratio beamwidth. 27 All the previously discussed antenna geometries have either large dimensions and narrow impedance bandwidth (IBW) or narrow axial ratio bandwidth (ARBW).…”

Bandwidth enhancement of compact microstrip rectangular antennas for UWB applications

“…Also DGS permits to control the excitation and electromagnetic waves propagating all through the substrate. Lastly the DGS in the ground plane plays an important role in microwave circuits and devices to make the system compact, effective and high performance [17][18][19].…”

Enhancement of gain with corrugated Y‐shaped patch antenna for triple‐band applications

“…In addition to this etched ground help to increase the bandwidth, impedance matching and VSWR . A hexadecagon shaped circular patch antenna is proposed to enhance the gain for dual‐band operation with DGS. Corrugation is added in horn antenna, integrated in LTCC to enhance the bandwidth and gain .…”