3-2 Home receiving antenna

Farm & Home Science Vol. 3 No. 2, June 1942

An Active Receiving Antenna for Short-range Wireless Automotive Communication

This paper describes an easily manufactured, reducedsize, active receiving antenna for automotive applications, which increases short-range wireless detection in the 315-MHz band. This compact antenna has an advantage over currently available antennas because can be hidden in a vehicle’s interior. The active antenna consists of a low-noise amplifier coupled to a low-profile planer meanderline p...

Voltage Across the Terminals of a Receiving Antenna

Deduce the no-load (open-circuit) voltage Voc across the terminals of a short, center-fed linear dipole antenna of half height h when excited by a plane wave of wavelength λ h whose electric field vector Ein is parallel to the dipole antenna. The ratio Heff = |Voc/Ein| is called the effective height of the antenna. Also deduce the current Isc that would flow between the terminals if they were s...

Prevalence of Risk Factors for Falls Among the Elderly Receiving Care at Home

Objectives Elderly people are at the highest risk for falling. In order to design and implement effective interventions and reduce the incidence of falling and its resulting injuries, the relative importance of each risk factor should be determined. This study aimed to determine how frequently different factors contribute to falls among the elderly served by one home health agency in Tehran.  ...

D - 7 3 8 2 N 92 - 10119 Chapter 3 Antenna Beam Coverage Concepts

The strawman PASS design calls for the use of a CONUS beam for transmission between the supplier and the satellite and for fixed beams for transmission between the basic personal terminal (BPT) and the satellite. The satellite uses a 3m main reflector for transmission at 20 GHz and a 2m main reflector for reception at 30 GHz. The beamwidth of the reflector is 0.35°. To cover CONUS 142 fixed bea...