Sentence examples for back ratio from inspiring English sources
An in-phase reflector array based on a cylindrical FSS is introduced to the antenna design to enhance the bandwidth and the front to back ratio.
Net present value (NPV) method is also employed to analyze the proposed system effectiveness economically, resulting to only 3.5 years of pay back ratio.
The reflection phase property of the HIS is used to increase the radiated field towards the antenna, thus providing a good return loss with 21% impedance bandwidth, 7.4 dBi gain and front to back ratio of 21dBB.
Table 3 Applicant interview callback rates and ratios by occupation and ethnicity Ethnicity Han Mongolian Uighur Tibetan Total Accounting: 5.86 3.36 2.92 2.77 4.44 Call back Ratio (Han/Minority) 1.74 2.01 2.12 Admin.
Proper choices of the antenna parameters, such as horn depth, aperture length, feeder waveguide width, flare angle, wall thickness, flare edge rolling and throat bending are proposed for the designers to reach high directivity gain, narrow beam width, suppressed side lobe levels, increased front-to back ratio and improved aperture efficiency.
In existing GBSM, e.g., IMT-Advanced channel model [9], almost all the intra-site interference from sector B is supposed to come from the backside of sector B antenna and has experienced extra 25 dB attenuation because of the front to back ratio of the antenna [9]. Figure 2 Intra-site interference in UMi scenario.
Backing the petition, Justine Roberts, founder of Mumsnet, said: "When we asked our members about the cost of childcare, only 5% of parents backed ratio relaxation, even if it meant lower costs.
Extension of the maintaining period can improve the biomechanical properties of expanded skin and effectively reduce the stretch-back ratio.
Both the tension in vivo and the instant stretch-back ratio increased during the expansion, but fell almost to control values after four weeks' maintaining period.
The choice of antenna response clearly depends on different factors, for example, front-to-back ratio, beamwidth, and directivity, and therefore an antenna response is application specific.
The front-to-back ratio (FTBR) is improved by backing the ring slots with a metallic rectangular cavity yielding FTBR of 21.2 dB and gain of 7.87 dB in measurements.
