antenna造句
151. This dissertation develops two millimeter waves microstrip antenna arrays which can be applied to the millimeter wave radar, the communication and the identification for friend-or-foe.
152. Genetic Algorithm(GA) has been shown to be an effective strategy in the off-line optimization, which is fit for designing shaped-beam antenna array.
153. The effects of element failure and tolerance on antenna sidelobe level and gain in solid-state active phased array is mainly discussed in this paper.
154. Fu - hu has said that current antenna video content is essential to take the buyout approach.
155. The segment of a satellite transmission satellite to an earth station or receiving antenna ( dish ).
156. A sphere, in contrast, concentrates its beam to a line – which is why a "line feed" antenna was originally used at Arecibo.
157. Organizations with a need for lightweight and quick-deploy antenna terminals, such as the United States Army, would greatly benefit from these features.
158. In the methods, single feed, more feed and several patches consisting circular polarization are used to feed the antenna and improve the impendent or AR bands.
159. An Archimedean planar spiral antenna mounted on the grounded double layer is investigated.
160. With the enlargement of the surfaces, antenna gain also increases, at first considerably and later on less and less.
161. The wireless communication system includes at least one gateway antenna arranged at an entrance point of the enclosed environment.
162. Responsible for anechoic chamber designs for EMC and antenna test and measurement requirements.
163. The frequency response may also be controlled by a low voltage micro sized varicap, or a varactor diode, and instantiated as a tuned, resonant matching filter network residing with the antenna module.
164. Adaptive sliding mode control (ASMC) method was applied in satellite antenna tracking and pointing servo system.
165. The kernel problem of antenna stabilization and tracking technology is the initial alignment and automatic tracking technology of antenna toward satellite.
166. It is a property for practical application as a frequency scanning antenna since it ensures a stable radiation pattern with little distortions while beam is being scanned.
167. The condition that meets the linear superposition is discussed. The Amendment technique of the lens antenna structures is improved utilizing the simulated radiation pattern.
168. An actual radar antenna pattern plotted by using the method shows approximately no difference from the practically measured results based on solar noise.
169. Waveguide shape is one of the most difficult problems in slotted waveguide array antenna processing.
170. It is an effective way to enhance this counter - jamming ability using array antenna.
171. The Space - borne Antenna is a new type of foldable structure which appears in recent years.
172. The antenna does not synchronize scanning. The heading line is not stable. The echo position is changed accordingly.
173. The system employs multiple detectors, each comprising an antenna coup LED with a device ( a bolometer) for measuring the energy of incident electromagnetic radiation.
174. Distributed antenna systems ( DAS ) is considered to be a promising candidate for future mobile communications.
175. As you can see from the radar data, there appears to be light precipitation within a 30-mile radius of the radar antenna.
176. Finally, the servo test bench and airborne antenna pedestal for parametric modeling and simulation to illustrate the usefulness of this analysis platform.
177. In prior art, the position and attitude control for antenna can only realized in small-scale, and lies in the means of hydraulic cylinder, gear box and rotary joint .
178. The main lobe of a fixed billboard antenna may, within limits, be steered by appropriate phasing of the respective signals to individual elements of the array.
179. In actual radar antenna design several thousand elements could be used to obtain a high-gain antenna with a beam width of less than two degrees.
180. OCX will deliver new GPS mission planning, constellation management, ground antenna, monitoring station, and satellite command and control capabilities.
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