Patents by Inventor Cho-Ju Chung
Cho-Ju Chung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9219306Abstract: A printed circuit board (PCB) antenna includes an antenna matching network, an antenna body, and a high frequency (HF) connector. The antenna matching network is used to electrically connect to a signal processing circuit. The antenna body is connected to the antenna matching network, the antenna body includes a bared area, the bared area is used to electrically connect to a conductive object and then to be grounded when the signal processing circuit is needed to be tested. The high frequency (HF) connector is electrically connected to the antenna body and is used to connect to a test device when the signal processing circuit is needed to be tested.Type: GrantFiled: July 29, 2013Date of Patent: December 22, 2015Assignees: AMBIT MICROSYSTEMS (SHANGHAI) LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Ai-Ning Song, Xiao-Yan Liu, Cho-Ju Chung
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Publication number: 20140132470Abstract: A printed circuit board (PCB) antenna includes an antenna matching network, an antenna body, and a high frequency (HF) connector. The antenna matching network is used to electrically connect to a signal processing circuit. The antenna body is connected to the antenna matching network, the antenna body includes a bared area, the bared area is used to electrically connect to a conductive object and then to be grounded when the signal processing circuit is needed to be tested. The high frequency (HF) connector is electrically connected to the antenna body and is used to connect to a test device when the signal processing circuit is needed to be tested.Type: ApplicationFiled: July 29, 2013Publication date: May 15, 2014Applicants: HON HAI PRECISION INDUSTRY CO., LTD., AMBIT MICROSYSTEMS (SHANGHAI) LTD.Inventors: AI-NING SONG, XIAO-YAN LIU, CHO-JU CHUNG
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Publication number: 20130285869Abstract: The antenna system includes a substrate, a first antenna, a second antenna and a reflection portion. The substrate is a printed circuit board (PCB), and includes a vacancy portion and a metal ground portion. The vacancy portion includes a radio frequency (RF) component portion and a non-RF component portion. The RF component portion includes some radio frequency components. In order to transmit and receive electromagnetic signal, the radio frequency components are electronically connected to the first antenna and the second antenna.Type: ApplicationFiled: March 29, 2013Publication date: October 31, 2013Applicants: HON HAI PRECISION INDUSTRY CO., LTD., AMBIT MICROSYSTEMS (SHANGHAI) LTD.Inventors: CHO-JU CHUNG, GUAN-RUN TAO
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Patent number: 8325091Abstract: A dual-band antenna includes a feeding portion, a radiating portion, a grounding portion, and an insulating support portion. The insulating support portion includes a first support wall, a second support wall, and a third support wall. The third support wall is parallel to the substrate, and perpendicularly connected to the first support wall and the second support wall, to position the radiating portion.Type: GrantFiled: April 12, 2010Date of Patent: December 4, 2012Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Ping Li, Chong Zhang, Cho-Ju Chung
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Publication number: 20120287015Abstract: A multi-layer antenna comprising a plurality of antenna units disposed on a multi-layer printed circuit board (PCB). Each layer of the multi-layer PCB respectively comprises two antenna units along two conjoined edges of the layer. Each antenna unit comprises a feeding portion and a radiating portion. The feeding portion is operable to feed received electromagnetic wave signals to the antenna unit. The radiating portion is operable to radiate the electromagnetic wave signals, and comprises a first radiating part and a second radiating part. The first radiating part is rectangular, and a first end of the first radiating part connects to the feeding portion while a second end of the first radiating part connects to the second radiating part. The second radiating part extends away from the first radiating part and forms a meandering āSā pattern.Type: ApplicationFiled: April 17, 2012Publication date: November 15, 2012Applicants: HON HAI PRECISION INDUSTRY CO., LTD., AMBIT MICROSYSTEMS (SHANGHAI) LTD.Inventors: CHO-JU CHUNG, AI-NING SONG
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Patent number: 8217840Abstract: A dual-band antenna assembly is positioned on a substrate, and includes an insulation body, a plane antenna and a microstrip antenna. The insulation body includes a plane surface paralleled to the substrate, and a side surface perpendicularly extending from edges of the plane surface to the substrate. The plane antenna includes a first feed portion and a first radiator. The first feed portion passes through the substrate to the plane surface of the insulation body. The first radiator is substantially positioned on a center of the plane surface of the insulation body, and electrically connected to the first feed portion. The microstrip antenna includes a second feed portion and a second radiator. The second radiator is a microstrip, electrically connected to the second feed portion and positioned on the side surface of the insulation body.Type: GrantFiled: November 30, 2009Date of Patent: July 10, 2012Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Min Chen, Cho-Ju Chung
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Patent number: 8094076Abstract: A multiband antenna includes a feed portion, a radiating portion, and a ground via. The feed portion includes a first feed section and a second feed section paralleled to each other. The radiating portion includes a first radiator, a second radiator and a third radiator. The first radiator is L shaped with a free end. The second radiator is L shaped with a free end. The free ends of the second radiator and the first radiator extend toward to each other and partially overlap to define a slot therebetween. The third radiator includes a trapezoid section and a connecting section. The short portion includes a first short section and a second short section. The first short section connects the first radiator to the ground via, and the second short section connects the second radiator and the third radiator to the ground via.Type: GrantFiled: October 21, 2009Date of Patent: January 10, 2012Assignees: Ambit Microsystems (Shanghai) Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Chong Zhang, Cho-Ju Chung
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Patent number: 8077097Abstract: A dual-band antenna includes a feed portion, a ground portion, a radiating portion and a fine-tuning portion. The feed portion is operable to feed electromagnetic signals. The radiating portion includes a first radiator, a second radiator and a connecting portion. The first radiator is elongated and has a first end electrically connected to the ground portion, and a second end of the first radiator is floating. The second radiator is U shaped, with two open ends floating. The connecting portion is connected to the first radiator, the second radiator and the feed portion. The feed portion feeds electromagnetic signal to the first radiator and the second radiator via the connecting portion. The fine-tuning portion is arranged around the second radiator, operable to control operating frequency bands of the second radiator.Type: GrantFiled: May 24, 2009Date of Patent: December 13, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Cho-Ju Chung, Teng-Huei Chu
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Publication number: 20110187618Abstract: A dual-band antenna includes a feeding portion, a radiating portion, a grounding portion, and an insulating support portion. The insulating support portion includes a first support wall, a second support wall, and a third support wall. The third support wall is parallel to the substrate, and perpendicularly connected to the first support wall and the second support wall, to position the radiating portion.Type: ApplicationFiled: April 12, 2010Publication date: August 4, 2011Applicants: AMBIT MICROSYSTEMS (SHANGHAI) LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: PING LI, CHONG ZHANG, CHO-JU CHUNG
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Publication number: 20110115573Abstract: A band-pass filter (BPF) includes a T-type lumped high pass filter and a hairpin-line resonator. The T-type lumped high pass filter is electrically connected with the T-type lumped high pass filter via a capacitor. The hairpin-line resonator includes a first hairpin-line low pass filter (LPF), and a second hairpin-line LPF connected in parallel to the first hairpin-line LPF reversely.Type: ApplicationFiled: December 30, 2009Publication date: May 19, 2011Applicants: AMBIT MICROSYSTEMS (SHANGHAI) LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: ZHI-CHENG YU, CHO-JU CHUNG
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Publication number: 20110050538Abstract: A dual-band antenna assembly is positioned on a substrate, and includes an insulation body, a plane antenna and a microstrip antenna. The insulation body includes a plane surface paralleled to the substrate, and a side surface perpendicularly extending from edges of the plane surface to the substrate. The plane antenna includes a first feed portion and a first radiator. The first feed portion passes through the substrate to the plane surface of the insulation body. The first radiator is substantially positioned on a center of the plane surface of the insulation body, and electrically connected to the first feed portion. The microstrip antenna includes a second feed portion and a second radiator. The second radiator is a microstrip, electrically connected to the second feed portion and positioned on the side surface of the insulation body.Type: ApplicationFiled: November 30, 2009Publication date: March 3, 2011Applicants: AMBIT MICROSYSTEMS (SHANGHAI) LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: MIN CHEN, CHO-JU CHUNG
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Publication number: 20110032166Abstract: A multiband antenna includes a feed portion, a radiating portion, and a ground via. The feed portion includes a first feed section and a second feed section paralleled to each other. The radiating portion includes a first radiator, a second radiator and a third radiator. The first radiator is L shaped with a free end. The second radiator is L shaped with a free end. The free ends of the second radiator and the first radiator extend toward to each other and partially overlap to define a slot therebetween. The third radiator includes a trapezoid section and a connecting section. The short portion includes a first short section and a second short section. The first short section connects the first radiator to the ground via, and the second short section connects the second radiator and the third radiator to the ground via.Type: ApplicationFiled: October 21, 2009Publication date: February 10, 2011Applicants: AMBIT MICROSYSTEMS (SHANGHAI) LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHONG ZHANG, CHO-JU CHUNG
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Patent number: 7821469Abstract: A printed antenna is positioned on a substrate, and includes a feeding portion and a radiating portion. The feeding portion is configured for feeding electromagnetic signals. The radiating portion is electronically connected to the feeding portion for transceiving the electromagnetic signals, and includes a first radiator, a second radiator, and a guiding portion. The first radiator is electronically connected to the feeding portion, and includes an arc-shaped radiating section. The second radiator is electronically connected to the feeding portion and the first radiator. The guiding portion is arc-shaped. The guiding portion and the second radiator are respectively positioned on different sides of the first radiator. A space between the guiding portion and the arc-shaped radiating section of the first radiator defines a first slot.Type: GrantFiled: September 8, 2008Date of Patent: October 26, 2010Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Zhi-Cheng Yu, Cho-Ju Chung
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Publication number: 20100265142Abstract: A dual-band antenna includes a feed portion, a ground portion, a radiating portion and a fine-tuning portion. The feed portion is operable to feed electromagnetic signals. The radiating portion includes a first radiator, a second radiator and a connecting portion. The first radiator is elongated and has a first end electrically connected to the ground portion, and a second end of the first radiator is floating. The second radiator is U shaped, with two open ends floating. The connecting portion is connected to the first radiator, the second radiator and the feed portion. The feed portion feeds electromagnetic signal to the first radiator and the second radiator via the connecting portion. The fine-tuning portion is arranged around the second radiator, operable to control operating frequency bands of the second radiator.Type: ApplicationFiled: May 24, 2009Publication date: October 21, 2010Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHO-JU CHUNG, TENG-HUEI CHU
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Patent number: 7812768Abstract: A MIMO antenna (20) is disposed on a substrate (10) including a first surface (12) and a second surface (14). The MIMO antenna includes a pair of parallel first antennas (30) spaced apart from each other and a second antenna (40) spaced apart from the first antennas. The second antenna is disposed between the first antennas. Each of the first and second antennas is disposed on the first and second surface of the substrate and is a dipole antenna.Type: GrantFiled: August 3, 2008Date of Patent: October 12, 2010Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Xiao-Feng Liu, Cho-Ju Chung, Teng-Huei Chu
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Patent number: 7701410Abstract: A dual-mode antenna device (20) includes a wireless module (207) and a second wireless module (208) transceiving signals of a first wireless network signal and a second wireless network. A first antenna (201) and a second antenna (202) transceive the signals, respectively. A first switch (203) is connected to the first antenna and a second switch (204) is connected to the second antenna. A third switch (205) is connected to the first switch, the second switch and the first wireless network module. A fourth switch (206) is connected to the first switch, the third switch and the second wireless network module. The first, third, and fourth switches collaboratively select the first antenna to transmit the wireless network signals. The second, third, and fourth switches collaboratively select the second antenna to transmit the wireless network signals.Type: GrantFiled: August 20, 2008Date of Patent: April 20, 2010Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Er-Wei Li, Yan-Ling Pan, Cho-Ju Chung, Chong Zhang
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Patent number: 7701198Abstract: A power measurement apparatus includes a radio frequency input terminal, a measurement module, an interface, a memory, and a control unit. The radio frequency input terminal is connected to a radio frequency device. The measurement module is connected to the radio frequency input terminal to convert the radio frequency signal into a voltage signal. The interface is connected to the measurement module, receiving and transmitting the voltage signal from the measurement module. The memory is connected to the interface to store a voltage-power table related to the radio frequency signal. The control unit is connected to the interface to query the voltage-power table in the memory via the interface, and obtain the power of the radio frequency device according to the voltage signal output from the measurement module.Type: GrantFiled: September 15, 2008Date of Patent: April 20, 2010Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Chong Zhang, Cho-Ju Chung, Teng-Huei Chu
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Publication number: 20090322313Abstract: A power measurement apparatus includes a radio frequency input terminal, a measurement module, an interface, a memory, and a control unit. The radio frequency input terminal is connected to a radio frequency device. The measurement module is connected to the radio frequency input terminal to convert the radio frequency signal into a voltage signal. The interface is connected to the measurement module, receiving and transmitting the voltage signal from the measurement module. The memory is connected to the interface to store a voltage-power table related to the radio frequency signal. The control unit is connected to the interface to query the voltage-power table in the memory via the interface, and obtain the power of the radio frequency device according to the voltage signal output from the measurement module.Type: ApplicationFiled: September 15, 2008Publication date: December 31, 2009Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen)CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHONG ZHANG, CHO-JU CHUNG, TENG-HUEI CHU
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Publication number: 20090267857Abstract: A MIMO antenna (20) is disposed on a substrate (10) including a first surface (12) and a second surface (14). The MIMO antenna includes a pair of parallel first antennas (30) spaced apart from each other and a second antenna (40) spaced apart from the first antennas. The second antenna is disposed between the first antennas. Each of the first and second antennas is disposed on the first and second surface of the substrate and is a dipole antenna.Type: ApplicationFiled: August 3, 2008Publication date: October 29, 2009Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: XIAO-FENG LIU, CHO-JU CHUNG, TENG-HUEI CHU
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Publication number: 20090262026Abstract: A printed antenna is positioned on a substrate, and includes a feeding portion and a radiating portion. The feeding portion is configured for feeding electromagnetic signals. The radiating portion is electronically connected to the feeding portion for transceiving the electromagnetic signals, and includes a first radiator, a second radiator, and a guiding portion. The first radiator is electronically connected to the feeding portion, and includes an arc-shaped radiating section. The second radiator is electronically connected to the feeding portion and the first radiator. The guiding portion is arc-shaped. The guiding portion and the second radiator are respectively positioned on different sides of the first radiator. A space between the guiding portion and the arc-shaped radiating section of the first radiator defines a first slot.Type: ApplicationFiled: September 8, 2008Publication date: October 22, 2009Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen)O., LTD., HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Zhi-Cheng Yu, Cho-Ju Chung