Unictron Technologies Corporation

Chih-Shen Chou

Tsung-Shou Yeh

Hsiang-Cheng Yang

Hung-Yi Chang

Shih-Chun Huang

Ching-Ling Lu

Yih-Wei Yang

Pei-Jen Lin

Jer-Yeu Kuo

Chih-Chi Yen

An antenna device includes a circuit board and at least one chip antenna. The circuit board includes a clearance area and at least one signal feeding line disposed in the clearance area. The chip antenna includes a substrate and at least one resonance unit partially or wholly disposed on the surface of or within the substrate. The chip antenna is disposed in the clearance area of the circuit board and the resonance unit of the chip antenna is connected to the signal feeding line. A shortest distance from an edge of the clearance area to a nearest edge of the circuit board is greater than 1/10 of a smallest width of the circuit board. Therefore, the polarization direction of the chip antenna is approximately perpendicular to the upper surface of the circuit board, as well as the direction of the strongest signal strength of the radiation pattern is approximately parallel to the upper surface of the circuit board.

Antenna device capable of generating specific radiation pattern

A multiple-frequency antenna device includes an antenna unit and a frequency switch unit. The antenna unit includes an insulating substrate on which grounded first and second conductive layers are disposed. The first conductive layer is further connected to a radio-frequency (RF) circuit. The frequency switch unit is connected to the antenna unit in parallel, and includes a switching component, and a frequency adjustment: component connected to the antenna unit. The multiple-frequency antenna device is resonant at a first resonant frequency when the switching component is switched to a first state, and is resonant at a different, second resonant frequency when the switching component is switched to a second state.

Multiple-frequency antenna device

The present invention is a multi-frequency antenna device comprising a first electrode layer and a second electrode layer disposed on a first surface of an insulating substrate, wherein the second electrode layer is located outside periphery of the first electrode layer. A third electrode layer is disposed on a second surface of the insulating substrate, and the first surface and the second surface are separated by the insulating substrate. A conductive element penetrates the insulating substrate and is connected to the first electrode layer. A groove is disposed on a side surface and/or the second surface of the insulating substrate, and a projection of the groove on the first surface completely or partially overlaps the second electrode layer. An effective dielectric constant between the second electrode layer and the third electrode layer is changed through arrangement of the groove to adjust a resonance frequency generated by the second electrode layer.

Multi-frequency antenna device

A multi-frequency antenna comprises a substrate disposed on a clearance area of a circuit board, and a first resonance unit and a second resonance unit located on the surface of the substrate or within the substrate. The first resonance unit is connected to a signal feeding terminal of the circuit board and connected to the second resonance unit via a first filtering element. The first resonance unit forms the first resonance frequency of the multi-frequency antenna, and the first resonance unit, the first filtering element, and the second resonance unit all together form the second resonant frequency. The first filtering element shows a high impedance towards the signal with the first resonant frequency and a low impedance towards the signal with the second resonant frequency. Thus, an antenna with multiple resonant frequencies can be obtained. The material and manufacturing costs of the multi-frequency antenna can thereby be reduced.

Multi-frequency antenna

A radio frequency device with mechanisms for adjustment of the impedances and frequencies of its antennas comprises a first circuit board, a radio frequency module and a second circuit board. The radio frequency module is disposed on the first circuit board that is disposed on the second circuit board. The radio frequency module comprises an antenna unit, a first frequency tuning element and a radio frequency circuitry. The antenna unit is disposed within a clearance area of the first circuit board, and connected to the radio frequency circuitry via a feeding circuit. The second circuit board comprises a second frequency tuning element that is electrically connected to the antenna unit via a ground circuit and the first frequency tuning element on the first circuit board. Thus, the resonance frequency of the antenna unit can be adjusted according to the first and the second frequency tuning element.

Radio frequency device with mechanisms for the adjustment of the impedances and frequencies of its antennas

A multi-frequency antenna includes a ground layer, at least one antenna unit and at least one antenna network. The antenna unit has its one end electrically connected to the ground layer and its other end electrically connected to the antenna network for generating at least one first resonance frequencies. The antenna network includes at least one feeding circuit, and at least one resonance unit. Each resonance unit includes at least one resonant segment. Each resonant segment is electromagnetically coupled with the adjacent ground layer to generate at least one second resonance frequency. Thus, the multi-frequency antenna is capable of generating multiple different resonance frequencies.

The present invention is related to a microstrip antenna including an insulating substrate, a first conducting layer and a second conducting layer respectively located at two opposing surfaces of the insulating substrate, a non-conductive isolation zone defined in the second conducting layer, and a feed-in unit located within the con-conductive isolation zone. Thus, the non-conductive isolation zone separates the second conducting layer and the feed-in unit. During application, the feed-in unit is connected with a signal feed-in terminal, enabling the microstrip antenna to receive and transmit wireless signals. During fabrication of the microstrip antenna, it does not need to make a through hole on the insulating substrate, reducing the microstrip antenna process steps and material consumption and lowering the microstrip antenna fabrication cost.

Coupled feed microstrip antenna

A miniature multi-frequency antenna, comprising at least one dielectric substrate, at least one signal electrode and at least one ground electrode. The signal electrode and the ground electrode are disposed on a substrate. The signal electrode contains at least two branches and at least one branch is partially overlapped with the ground electrode. Each interlayer region between the partially overlapped electrodes forms a specific capacitance. By utilizing this interlayer capacitive effect, the resonant frequency of lower frequency band is achieved while the size of the antenna is effectively reduced. For obtaining the resonant frequency of the high frequency bands, the design concept of PIFA is applied on other branches of the signal electrode. A miniature antenna thus obtained is capable of transmitting/receiving multi-frequency signals having the benefits of easily adjusting impedance and resonant frequency.

Miniature multi-frequency antenna

The present invention is related to a miniature antenna, mainly comprising a dielectric element, at least one first conductive plane, a second conductive plane, a third conductive plane, a plurality of ground terminals, and a signal feeding terminal. A part of the first conductive plane overlaps a part of the second conductive plane to form a first overlap region. A part of the first conductive plane also overlaps a part of the third conductive plane to form a second overlap region. Two resonant frequencies thus can be provided for the miniature antenna. By adjusting the sizes of overlap regions, the distances between the conductive planes, or dielectric constant of the dielectric element, the bandwidths of the two resonant frequencies may be produced to overlap each other to form a miniature antenna having a wider bandwidth.

Miniature antenna

The present invention discloses a miniature antenna that has a simple structure, compact dimension and high efficiency. The miniature antenna is comprised of a dielectric element made of a dielectric material, having a first surface and a second surface opposite to the first surface, a first electrode layer being laid on the first surface, and a second electrode layer being laid on the second surface. The first electrode layer connected to a signal feeding line and the second electrode layer, connected to a ground plane, are partially overlapped to form a region that functions as a capacitor. Thereby, the miniature antenna can transmit and receive signals. The capacitance and resonant frequency of the miniature antenna can be adjusted via varying the pattern of the electrode layers, varying the thickness or permittivity of the dielectric element or via varying the size of the overlapping areas of the two electrode layers.

An antenna structure includes a substrate, a signal transmission unit and at least one fixing unit. The substrate is made of a dielectric material and has at least a through hole. The signal transmission unit has a transmission path and goes through the through hole. The fixing unit is made of a flexible or deformable material, and is in contact with the signal transmission unit and the inner surface of the through hole to fix the signal transmission unit on the substrate.

Growing community of inventors

Hsin-Chu, Taiwan

Chih-Shen Chou