Vascular Dementia: Introduction. Vascular dementia is the second most common type of dementia after Alzheimer's disease. Vascular dementia is a neurodegenerative disorder of the brain in which there is cognitive decline and deficiencies in mental performance that generally occur in steps.
Basics of RF drive test/testing. RF Drive test/testing is the procedure to evaluate performance of wireless modem/system while driving(or in motion). The wireless modem or system may include any wireless standards such as GSM,WCDMA,HSPA,UMTS,LTE,WIMAX,WLAN etc.
The basic applications of the RF power amplifier include driving to another high power source, driving a transmitting antenna and exciting microwave cavity resonators.Among these applications, driving transmitter antennas is most well known.ubes are still used for exceptionally high-power transmissions (see Valve RF amplifier). Many modern RF amplifiers of over 1000 Watts are solid state using various classes, class A (in various forms, Class AB, AB1, etc.), class B, class C and class E.