TY  - JOUR
TI  - A Dual-Band Patch Antenna with Improved Gain and Group Delay Characteristics for C-Band and X-Band Applications
AB  - In this study, a dual-band patch antenna with improved gain and group delay characteristics is proposed for C-band and X-band applications in radar and satellite communications. In the study, conventional square patch antenna is modified by partially removing the ground plane and rounding the patch corners. The radius of the rounded patch corners is determined by parametric study to achieve the best antenna performance. According to this parametric study, the value of the radius is set to 2 mm. Antenna performance is analysed both in frequency and time domains. Return Loss, Voltage Standing Wave Ratio, gain, radiation pattern, and group delay are investigated via CST Microwave Studio program. Experimental study is also performed to verify the simulation results. The results show that the designed antenna with rounded patch corners and partial ground plane has dual band characteristic. The two resonance frequencies are 6.85 GHz and 9.1 GHz in the simulation results, and 6.56 GHz and 9.12 GHz in the measurement results. The antenna has maximum gain of 5.8 dB. Additionally, group delay variation is very small in the related frequency range. Thus, it is verified that, the proposed antenna has enhanced bandwidth, improved gain and more uniform group delay as compared to the conventional square patch antenna. The proposed dual-band antenna is a quite promising structure with its appropriate gain and uniform group delay characteristics for C-band and X-band applications in radar and satellite communications.
AU  - ÇOLAK, Şule
AU  - GENÇOĞLAN, Duygu Nazan
PY  - 2021
JO  - Çukurova Üniversitesi Mühendislik Fakültesi dergisi
VL  - 36
IS  - 1
SN  - 2757-9255
SP  - 261
EP  - 272
DB  - TRDizin
UR  - http://search/yayin/detay/455667
ER  -