Embodiments include a communication device, having a wireless communication processor. The communication device includes an antenna connected to a feeding point of the wireless communication processor. The communication device also includes a metal component disposed proximal the antenna and a circuit board including a ground plane. The communication device further includes a first conductive line and a second conductive line which connect the ground plane to two locations on the antenna, on one end and the other end of a location proximal the metal component.

In an antenna device including a high-band antenna element and a low-band antenna element that are connected to a common feed point and feeding electric power using one feed point, influence by unnecessary resonance of the low-band antenna element in a high band is suppressed. The antenna device includes a high-band antenna element and a low-band antenna element that are connected to a common feed point, an antenna-shortening inductor that is connected to between the low-band antenna element and the feed point, and a capacitor that is connected to the antenna-shortening inductor in parallel.

The present disclosure relates to an antenna module and a mobile terminal having the same, and the antenna module may include a conductive member, a first conductive arm formed at one side of the conductive member to form a first loop along with the conductive member so as to implement a first resonant frequency, a second conductive arm formed at the other side of the conductive member to form a second loop along with the conductive member so as to implement a second resonant frequency different from the first resonant frequency, a first feeding portion formed adjacent to the first conductive arm to feed the first conductive arm and conductive member, and a second feeding portion formed adjacent to the second conductive arm to feed the second conductive arm and conductive member.

An apparatus (10) comprising a substrate (2) and an antenna (20). The antenna (20) comprising a first conductive element (21) having a first electrical length and connected to a first antenna terminal (31) and a second conductive element (22) having a second electrical length connected to a second antenna terminal (32), wherein at least the first conductive element is supported by a first portion of the substrate (11) and wherein at least the first portion of the substrate is configured to deform from a first configuration to a second configuration to: change the first electrical length of the first conductive element relative to the second electrical length of the second conductive element; and add or remove at least one operational resonant mode of the antenna.

In an aspect of the disclosure, a method and an apparatus are provided. The apparatus may be a wearable communication apparatus for wireless communication. The wearable communication apparatus includes communication circuitry, a bezel, and a base. The bezel and the base are conductive. The bezel and the base form at least a part of a housing structure supporting the communication circuitry. The base is electrically connected to the bezel. The communication circuitry is electrically connected to the bezel. The bezel is configured to function as a part of a slot antenna. The communication circuitry is configured to send a first communication signal to the bezel such that the bezel transmits the first communication signal over the air. The bezel is further configured to receive, over the air, a second communication signal and direct the second communication signal to the communication circuitry.

An adjustable monopole antenna apparatus and methods. In one embodiment, the antenna apparatus is intended for mobile terminals. In an exemplary implementation, there is an adjusting point is provided from which a conductor is branched to an adjusting circuit. The adjusting circuit comprises a switch and alternative reactive elements connected to ground, selectable by the switch. When a reactive element is changed, the electric length and resonance frequency of the radiator change, and the corresponding operating band shifts. If the antenna is configured as a dual-band antenna, the above-mentioned operating band is the lower band. One or more higher operating bands are based e.g. on radiating slots implemented by the same radiator conductor. The operating band of the exemplary embodiment of the antenna below the frequency 1 GHz can be shifted in a wider range than in the corresponding known antennas.

Systems and methods for operating a radio system include configuring a first antenna of a plurality of antennas in a wireless device to operate in a configured mode of a plurality of modes, wherein the plurality of modes include a first mode of operating as a quarter wave for operation in a 2.4 GHz band, a second mode of operating as a half wave for operation in a 5 GHz band, and a third mode of operating simultaneous as a half wave and a quarter wave for operation in both the 2.4 GHz band and the 5 GHz band; and operating a first radio of a plurality of radios connected to the first antenna in the configured mode of the first antenna.

Disclosed is an antenna device. The antenna device includes a first conductor pattern including a plurality of first antenna components, the first conductor pattern formed on a first substrate, a second conductor pattern including a plurality of second antenna components, the second conductor pattern formed on a second substrate, and a plurality of conductor lines connecting each of the first antenna components of the first conductor pattern and each of the second antenna components of the second conductor pattern, wherein the first conductor pattern and the second conductor pattern may be spaced apart from each other.

A technique is provided for tuning the resonance frequency of an electric-based antenna formed by a radiator element coupled to an antenna ground plane. The disclosed method comprises providing a plurality of parasitic capacitive elements extending in an electric field direction of the electric-based antenna so as to lower the resonance frequency of the electric-based antenna below a desired resonance frequency. The electric-based antenna is then integrated within a deployment environment of interest, and thereafter an indication of an actual frequency response of the electric-based antenna within the deployment environment is obtained. One or more of the parasitic capacitive elements may then be removed so as to adjust the actual resonance frequency towards the desired resonance frequency. By such an approach, a significant degree of adjustment in the resonance frequency of the antenna can be made after the antenna has been integrated within the deployment environment.

A method includes determining an operating frequency of an antenna at a component of the antenna. The method includes determining, at the component of the antenna, a filter node of a plurality of filter nodes to activate to tune the antenna to the operating frequency. The method includes transmitting power to the filter node, wherein the power is transmitted via a first optical fiber. The method also includes sending a signal from the component to a light source. The activation of the light source sends an optical signal to the filter node. The filter node adjusts a characteristic of a radiating element coupled to the filter node using the power responsive to the optical signal. Adjustment of the characteristic facilitates tuning the antenna to the operating frequency.