Search results
Results from the WOW.Com Content Network
Gain or 'absolute gain' is defined as "The ratio of the radiation intensity in a given direction to the radiation intensity that would be produced if the power accepted by the antenna were isotropically radiated". [1] Usually this ratio is expressed in decibels with respect to an isotropic radiator (dBi).
The Deep Space Network has been able to maintain the link at a higher than expected bitrate through a series of improvements, such as increasing the antenna size from 64 m to 70 m for a 1.2 dB gain, and upgrading to low noise electronics for a 0.5 dB gain in 2000–2001.
The problem is now finding how to break the loop without affecting the bias point and altering the results. Middlebrook [3] and Rosenstark [4] have proposed several methods for experimental evaluation of return ratio (loosely referred to by these authors as simply loop gain), and similar methods have been adapted for use in SPICE by Hurst. [5]
A quad antenna is a self-resonant loop in a square shape; this one also includes a parasitic element.. Loop antennas may be in the shape of a circle, a square, or any other closed geometric shape that allows the total perimeter to be slightly more than one wavelength.
In electronics and control system theory, loop gain is the sum of the gain, expressed as a ratio or in decibels, around a feedback loop. Feedback loops are widely used in electronics in amplifiers and oscillators , and more generally in both electronic and nonelectronic industrial control systems to control industrial plant and equipment.
Delta Charts Path To High Margins And Shareholder Gains At 2024 Investor Day. ... 15%+ return on invested capital, and $40 billion in unencumbered assets, the framework emphasizes margin expansion ...
This resulted in much higher gain for UHF, typically on the order of 10 to 14 dB on the Yagi side and 6.5 dB for the log-periodic. [5] But this extra gain was needed anyway in order to make up for a number of problems with UHF signals. The log-periodic shape, according to the IEEE definition, [6] [7] does not align with broadband property for ...
Side lobes are normally the largest of the minor lobes. The level of minor lobes is usually expressed as a ratio of the power density in the lobe in question to that of the major lobe. This ratio is often termed the side lobe ratio or side lobe level. Side lobe levels of −20 dB or greater are usually not desirable in many applications.