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| Content Provider | IET Digital Library |
|---|---|
| Author | Kumar, Hemant Kumar, Girish |
| Abstract | In this study, a broadband planar multilayer monopulse antenna at the X-band for monopulse tracking applications is presented. A monopulse comparator has been designed using four hybrid ratrace for feeding the radiating elements of the antenna. Each radiating part of the monopulse antenna consists of 4 × 4 electromagnetically coupled microstrip antenna array. To achieve circular geometry as well as better side-lobe level (SLL), a hybrid feeding technique is used in radiating antenna array by adding a few elements in series at the end elements of the parasitic layer of a 4 × 4 corporate fed array. The prototype has been fabricated, tested and measured results are compared with simulated results. The simulated impedance bandwidth for ∣S 11∣ ≤ −10 dB is 21% (8.6–10.6 GHz). A measured peak sum beam gain of 24.4 dBi has been obtained. Measured SLL of <−15 dB has been achieved in both elevation and azimuth planes along with a null depth of <−35 dB for difference patterns in both the planes. The radiation pattern is symmetrical in both the planes with half-power beamwidth nearly equal to 9.0°. |
| Starting Page | 2109 |
| Ending Page | 2114 |
| Page Count | 6 |
| ISSN | 17518725 |
| Volume Number | 12 |
| e-ISSN | 17518733 |
| Issue Number | Issue 13, Oct (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/12/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5332 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2018-07-20 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 4 × 4 Corporate Fed Array 4 × 4 Electromagnetically Coupled Microstrip Antenna Array Antenna Accessory Antenna Array Antenna Feeds Antenna Radiation Pattern Azimuth Plane Bandwidth 8.6 GHz to 10.6 GHz Broadband Antenna Broadband Monopulse Microstrip Antenna Array Broadband Planar Multilayer Monopulse Antenna Circular Geometry Combinatorial Mathematics Comparators (circuits) Digital Circuit Elevation Plane Geometry Half-power Beamwidth Hybrid Feeding Technique Hybrid Ratrace Measured Peak Sum Beam Gain Microstrip Antenna Array Monopulse Comparator Parasitic Layer Radiating Antenna Array Radiating Element Radiation Pattern Side-lobe Level Simulated Impedance Bandwidth X-band Monopulse Tracking |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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