ANTENNA ASSEMBLY WITH BALANCER AND TUNER FOR PORTABLE RADIO EQUIPMENT Russian patent published in 2000 - IPC

FIELD: antenna assemblies with antenna feeds of optimal size and characteristics. SUBSTANCE: for organizing antenna assembly, antenna arms are connected at feed point to transforming balancer-to-unbalancer transition circuit. Tuner mounted near feed connection point provides for reducing antenna assembly size and improving other characteristics. Tuner is electrically connected to one of arms and placed in a spaced relation to adjacent arm. Gap may be also provided between tuner and feed point. Optimal version is when arms and tuner are made of thin metal arms on elongated insulating tube. According to optimal version, balancer-to-unbalancer transition circuit may be also placed inside elongated insulating tube. EFFECT: reduced size and improved uniformity of antenna pattern in working range of angles. 10 cl, 7 dwg