Patent ID: 9425504
Filing Date: 2016-08-23
CPC Classification: H01P,H01Q,Y10T

Claim Text:
1. An antenna apparatus for a mobile station (MS), the antenna apparatus comprising: a flexible substrate portion comprising one or more layers and having first and second ends defining a longitudinal length thereof, the substrate portion comprising a first portion situated adjacent to the first end and a second portion situated adjacent to the second end; a coil antenna configured to inductively transmit or receive radio frequency (RF) signals for communication with a radio-frequency identification (RFID) device and disposed on one or more of the one or more flexible layers of the substrate portion in the first portion of the substrate portion; and a second conductive pattern configured to be coupled to a ground plane of the MS and disposed in the second portion of the substrate portion, the second conductive pattern being further configured to form a side-edge (SE) balance-to-unbalance (BALUN) which controls impedance in the second conductive pattern, wherein the second conductive pattern has a center portion of varying width, side portions extending from the center portion and located on opposite sides of the center portion, and electrically neutral slots situated between a corresponding side portion and the center portion.