En radioélectricité, une antenne est un dispositif permettant de rayonner (émetteur) ou, de capter (récepteur), les ondes électromagnétiques. L'antenne est un élément fondamental dans un système radioélectrique, et ses caractéristiques de rendement, gain, diagramme de rayonnement influencent directement les performances de qualité et de portée du système.
Cet article définit les caractéristiques et paramètres généraux des antennes, chaque antenne et application particulière étant développée dans les articles liés.
New Mexico is a state located in the southwest and western regions of the United States. It is usually considered one of the Mountain States. New Mexico is the 5th most extensive, the 36th most populous, and the 6th least densely populated of the 50 United States.
Inhabited by indigenous peoples of the Americas for many centuries before European exploration, New Mexico was subsequently part of the Imperial Spanish viceroyalty of New Spain, then part of Mexico, and a U.S. territory before attaining statehood. Among U.S. states, New Mexico has the highest percentage of Hispanics, including descendants of Spanish colonists and recent immigrants from Latin America. It also has the second-highest percentage of Native Americans after Alaska, and the fourth-highest total number of Native Americans after California, Oklahoma, and Arizona. The tribes in the state consist of mostly Navajo and Pueblo and the Apache peoples. As a result, the demographics and culture of the state are unique for their strong Hispanic and Native-American influences, both of which are reflected in the state flag. The red and gold colors of the New Mexico flag are taken from the flag of Spain, along with the ancient sun symbol of the Zia, a Pueblo-related tribe.