JP2016502328A5

JP2016502328A5 -

Info

Publication number: JP2016502328A5
Application number: JP2015541756A
Authority: JP
Filing date: 2013-01-09
Publication date: 2016-03-03

Claims

A method for designing a modal antenna for diversity use, comprising:
Placing an antenna radiator above the circuit board and forming an antenna space therebetween;
Wherein a step of disposing the first parasitic elements in the antenna space, the first parasitic element are all SANYO coupled to the first active element to vary the reactance of said antenna,
Further comprising an external in placing a second parasitic elements adjacent to the antenna radiator of the antenna space, the second parasitic element is coupled to the second active element in order to change the current mode Monodea is,
Providing a control signal for actively setting the first active element and a conductor associated with the second active element ;
A method comprising:

The method of claim 1, further comprising optimizing a distance and orientation of the first parasitic element relative to the antenna radiator for operation in a desired frequency band.

3. The method of claim 2, further comprising optimizing a distance and orientation of the second parasitic element relative to the antenna radiator to obtain a split resonant frequency characteristic of the antenna.

4. The method of claim 3, further comprising connecting the second non-excited element to ground to obtain a split resonant frequency characteristic of the antenna.

5. The method of claim 4, further comprising changing a reactance of the first non-excited element to change the split resonant frequency of the antenna.

The method of claim 1, wherein the first active element and the second active element are a switch, a voltage controlled tunable capacitor, a voltage controlled tunable phase shifter, a varactor diode, a PIN diode, and a MEMS switch, respectively. , A MEMS tunable capacitor, a BST tunable capacitor and a method selected from the group of FETs.

2. The method of claim 1, further comprising the step of causing the antenna to correspond to operation in a first antenna mode, wherein the first antenna mode is by isolating the second parasitic element from ground. How to be enabled.

8. The method of claim 7, further comprising associating the antenna for operation in a second antenna mode, wherein the second antenna mode is by connecting the second parasitic element to ground. How to be enabled.

The method of claim 1, wherein the first non-excited element and the first active element are configured to provide a beam steering function, and the second non-excited element and the second active element are A method configured to provide a frequency tuning function associated with an antenna.

The method of claim 1, wherein additional active elements are connected to the antenna to perform parallel resonant impedance matching for antenna performance optimization.

The method of claim 1, further comprising an additional second parasitic element for radiation pattern steering associated with the antenna.

An antenna system suitable for multiband operation and null steering,
A first radiation structure disposed above the circuit board, the first radiation structure forming a first antenna space with the circuit board;
A first parasitic element disposed in the first antenna space;
A second parasitic element disposed outside the first antenna space and adjacent to the first radiation structure;
A first null steering antenna having
A second radiation structure disposed above the circuit board, the second radiation structure forming a second antenna space with the circuit board;
A third parasitic element disposed in the second antenna space;
A fourth parasitic element disposed outside the second antenna space and adjacent to the second radiation structure;
A second null steering antenna having
With
The first null steering antenna is optimized for the transmission band of the AWS frequency band in the range of 1710 to 1755 MHz,
The second null steering antenna is an antenna system optimized for a reception band of an AWS frequency band in a range of 2101 to 2155 MHz.

A radiation structure disposed above the circuit board and forming an antenna space with the circuit board;
A first parasitic element disposed within the antenna space and associated with the first active element;
A second parasitic element associated with a second active element disposed outside the antenna space and adjacent to the radiating structure;
A processor configured to communicate with the first active element and the second active element;
An antenna system comprising:
The processor receives a control signal and dynamically controls the first active element and the second active element;
The antenna system has an algorithm configured to sample a performance measurement of a received signal associated with a plurality of antenna modes.

An antenna system according to claim 13, the reactance produced by the first parasitic element and at least one of the active elements of said second parasitic element is adjusted so as to improve reception performance, the antenna system.

15. The antenna system according to claim 14 , wherein continuous reactance values are sampled at successive intervals in the non-operational mode before operating the non-operational mode for use as a receiving antenna to obtain reception performance. Improve the antenna system.