Patents by Inventor Wan-Jin Choi
Wan-Jin Choi 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).
-
Patent number: 7656354Abstract: Disclosed is an antenna apparatus for a portable terminal which includes radiation elements received in a housing of the portable terminal; contact arms formed on the radiation elements; and feeding pads disposed on both surfaces of a printed circuit board, wherein the contact arms are in contact with the feeding pads. The contact arms respectively come in contact with each feeding pad. The pair of feeding pads is attached to the printed circuit board while the contact arms are provided on the radiation elements so as to come in contact with the each feeding pad, so that the antenna apparatus may satisfy operation criteria of wide and multi bands. In addition, the radiation elements are formed as a pair, one of which satisfies the operation criteria of double and triple bands and the other of which has resonance frequency of other bands, so that the operation criteria of the multi bands can be effectively achieved.Type: GrantFiled: June 15, 2006Date of Patent: February 2, 2010Assignee: Samsung Electronics Co., LtdInventors: Jung-Ho Park, Wan-Jin Choi
-
Patent number: 7532166Abstract: Provided is an antenna device for a portable terminal including a first housing and a second housing assembled with the first housing so as to slidingly move on the first housing. The antenna device includes an antenna pattern installed on an inner surface of the second housing; and at least one connecting terminal, which is installed on the outer surface of the first housing and is sliding by connected to the antenna pattern, wherein the second housing is assembled with the first housing to at least partially cover the first housing. The antenna device has few parts and has a simple structure, thus simplifying manufacture and reducing.Type: GrantFiled: October 14, 2005Date of Patent: May 12, 2009Assignee: Samsung Electronics Co., LtdInventors: Dong-Hwan Kim, Jinu Kim, Wan-Jin Choi
-
Patent number: 7526083Abstract: Disclosed is a ground connecting apparatus for a mobile terminal, in which grounds formed on the terminal are directly or indirectly connected so as to reduce an SAR value, thereby adjusting a connection length of the grounds.Type: GrantFiled: July 19, 2004Date of Patent: April 28, 2009Assignee: Samsung Electronics Co., LtdInventors: Seon-Kyeng Kim, Wan-Jin Choi, Ju-Hyung Lee, Jung-Ho Park
-
Patent number: 7366479Abstract: Disclosed is a mobile communication terminal including a separate antenna for receiving multimedia public broadcasting signals. The mobile communication terminal has a sender/receiver antenna, a diversity antenna for performing a diversity function, a diplexer connected to the sender/receiver antenna for outputting signals from the sender/receiver antenna, a satellite antenna detachably mounted on the mobile communication terminal for receiving multimedia public broadcasting signals or satellite broadcasting signals. A receiving/transmitting signal processing section is provided for processing signals transmitted from the sender/receiver antenna, the diversity antenna and the satellite antenna.Type: GrantFiled: September 22, 2004Date of Patent: April 29, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Ju-Hyung Lee, Wan-Jin Choi, Joung-Sub Shin
-
Patent number: 7301499Abstract: Disclosed is a built-in type antenna apparatus for a portable terminal which separates an antenna from a slot antenna and includes an additional sub-antenna. The built-in type antenna apparatus includes a first planar antenna having a shorting point and a feeding point; a second planar antenna provided at a position adjacent to the first planar antenna, the second planar antenna having a shorting point and providing at least one slot; and a sub-antenna electrically connected to the first planar antenna and electromagnetically coupled with the second planar antenna.Type: GrantFiled: September 20, 2005Date of Patent: November 27, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Joo Shin, Alexander Goudelev, Wan-Jin Choi
-
Patent number: 7280856Abstract: A portable terminal having a tuner for changing an antenna radiation pattern is disclosed. In the portable terminal, a main body has a main body PCB and a main body ground defined in the main body PCB. A folder is rotatably connected to the main body by a hinge device. An antenna device is provided at an upper end of the main body. The tuner is formed at a predetermined position of the main body in the vicinity of the antenna device, for changing a current distribution of the main body and thus changing an antenna radiation pattern of the portable terminal.Type: GrantFiled: April 29, 2004Date of Patent: October 9, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Jung-Ho Park, Wan-Jin Choi, Seonk-Kyeng Kim, Ho-Soo Seo, Won-Chan Kim, Jae-Joon Choi, Taig-Jong Yoo
-
Patent number: 7158084Abstract: A variable antenna apparatus for a mobile terminal. The variable antenna apparatus includes a radiation component that is rotatably coupled with the mobile terminal, a feeding component that is adjacent to a first end part of the radiation component and electrically connected to a radio frequency board of the mobile terminal. A grounding component is adjacent to the first end part of the radiation component and selectively connected to a ground of the radio frequency board as the radiation component is rotated. The antenna apparatus is accommodated in a terminal so that it is possible to conveniently carry the terminal, and the antenna is rotatably protruded from the terminal during a telephone call, such that appropriate antenna gain is achieved.Type: GrantFiled: September 22, 2004Date of Patent: January 2, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Hwan Kim, Byung-Duck Cho, Wan-Jin Choi
-
Patent number: 7158085Abstract: Disclosed is an antenna apparatus for a sliding-type portable terminal having a first housing and a second housing adapted to slide along the longitudinal direction of the first housing including an external antenna having a stationary antenna portion extending along the longitudinal direction and having an end fixed on the first housing and at least one movable antenna portion extending along the longitudinal direction and having the other end fixed to the second housing so that, as the second housing slides, it retracts in and extends out of the stationary antenna portion. The antenna apparatus for a sliding-type portable terminal has an external antenna which, together with the embedded antenna, compensates for the deteriorated performance of the embedded antenna during a speech mode. In addition, the antenna apparatus does not affect the design of the terminal and provides various types of terminal design, because it does not protrudes out of the terminal.Type: GrantFiled: March 16, 2005Date of Patent: January 2, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Joo Shin, Wan-Jin Choi
-
Publication number: 20060284773Abstract: Disclosed is an antenna apparatus for a portable terminal which includes radiation elements received in a housing of the portable terminal; contact arms formed on the radiation elements; and feeding pads disposed on both surfaces of a printed circuit board, wherein the contact arms are in contact with the feeding pads. The contact arms respectively come in contact with each feeding pad. The pair of feeding pads is attached to the printed circuit board while the contact arms are provided on the radiation elements so as to come in contact with the each feeding pad, so that the antenna apparatus may satisfy operation criteria of wide and multi bands. In addition, the radiation elements are formed as a pair, one of which satisfies the operation criteria of double and triple bands and the other of which has resonance frequency of other bands, so that the operation criteria of the multi bands can be effectively achieved.Type: ApplicationFiled: June 15, 2006Publication date: December 21, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Jung-Ho Park, Wan-Jin Choi
-
Publication number: 20060279466Abstract: An antenna apparatus for a portable terminal. The antenna apparatus includes a first helical antenna which is mounted on the portable terminal and takes the form of a coil and a second helical antenna which is wound the same axis as the first helical antenna and is surrounded by the first helical antenna. One end of the second helical antenna is connected to one end of the first helical antenna.Type: ApplicationFiled: January 25, 2006Publication date: December 14, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Jin Kim, Seung-Hwan Kim, Joung-Sub Shin, Jinu Kim, Wan-Jin Choi
-
Publication number: 20060244664Abstract: Disclosed is a built-in type antenna apparatus for a portable terminal which separates an antenna from a slot antenna and includes an additional sub-antenna. The built-in type antenna apparatus includes a first planar antenna having a shorting point and a feeding point; a second planar antenna provided at a position adjacent to the first planar antenna, the second planar antenna having a shorting point and providing at least one slot; and a sub-antenna electrically connected to the first planar antenna and electromagnetically coupled with the second planar antenna.Type: ApplicationFiled: September 20, 2005Publication date: November 2, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Joo Shin, Alexander Goudelev, Wan-Jin Choi
-
Publication number: 20060097931Abstract: Provided is an antenna device for a portable terminal including a first housing and a second housing assembled with the first housing so as to slidingly move on the first housing. The antenna device includes an antenna pattern installed on an inner surface of the second housing; and at least one connecting terminal, which is installed on the outer surface of the first housing and is sliding by connected to the antenna pattern, wherein the second housing is assembled with the first housing to at least partially cover the first housing. The antenna device has few parts and has a simple structure, thus simplifying manufacture and reducing.Type: ApplicationFiled: October 14, 2005Publication date: May 11, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong-Hwan Kim, Jinu kim, Wan-Jin Choi
-
Publication number: 20050264457Abstract: Disclosed is an antenna apparatus for a sliding-type portable terminal having a first housing and a second housing adapted to slide along the longitudinal direction of the first housing including an external antenna having a stationary antenna portion extending along the longitudinal direction and having an end fixed on the first housing and at least one movable antenna portion extending along the longitudinal direction and having the other end fixed to the second housing so that, as the second housing slides, it retracts in and extends out of the stationary antenna portion. The antenna apparatus for a sliding-type portable terminal has an external antenna which, together with the embedded antenna, compensates for the deteriorated performance of the embedded antenna during a speech mode. In addition, the antenna apparatus does not affect the design of the terminal and provides various types of terminal design, because it does not protrudes out of the terminal.Type: ApplicationFiled: March 16, 2005Publication date: December 1, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yong-Joo Shin, Wan-Jin Choi
-
Publication number: 20050237242Abstract: A variable antenna apparatus for a mobile terminal. The variable antenna apparatus includes a radiation component that is rotatably coupled with the mobile terminal, a feeding component that is adjacent to a first end part of the radiation component and electrically connected to a radio frequency board of the mobile terminal. A grounding component is adjacent to the first end part of the radiation component and selectively connected to a ground of the radio frequency board as the radiation component is rotated. The antenna apparatus is accommodated in a terminal so that it is possible to conveniently carry the terminal, and the antenna is rotatably protruded from the terminal during a telephone call, such that appropriate antenna gain is achieved.Type: ApplicationFiled: September 22, 2004Publication date: October 27, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD..Inventors: Dong-Hwan Kim, Byung-Duck Cho, Wan-Jin Choi
-
Publication number: 20050153651Abstract: Disclosed is a mobile communication terminal including a separate antenna for receiving multimedia public broadcasting signals. The mobile communication terminal has a sender/receiver antenna, a diversity antenna for performing a diversity function, a diplexer connected to the sender/receiver antenna for outputting signals from the sender/receiver antenna, a satellite antenna detachably mounted on the mobile communication terminal for receiving multimedia public broadcasting signals or satellite broadcasting signals. A receiving/transmitting signal processing section is provided for processing signals transmitted from the sender/receiver antenna, the diversity antenna and the satellite antenna.Type: ApplicationFiled: September 22, 2004Publication date: July 14, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ju-Hyung Lee, Wan-Jin Choi, Joung-Sub Shin
-
Patent number: 6897825Abstract: An antenna apparatus for a folder type mobile phone, wherein a first antenna is installed in a main body of the folder type mobile phone, and a second antenna is installed in the folder. The folder type mobile phone installs a main antenna apparatus in the main body, and an antenna apparatus for maximizing the diversity effect in the folder. As a result, it becomes more convenient to carry the folder type mobile phone based on the diversity mode, while securing a broader separation distance between two antennas at the same time.Type: GrantFiled: October 28, 2002Date of Patent: May 24, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-Wook Kim, Jin-Woo Park, Juh-Hyung Lee, Dong-In Ha, Krylov Konstantine, Jong-Kui Park, Byung-Man Lim, Jung-Ho Park, Sung-Kyung Kim, Joon-Ho Byun, Wan-Jin Choi, Dong-Hwan Kim
-
Patent number: 6885346Abstract: There is provided a built-in single band antenna device and an operating method thereof in a mobile terminal. In the built-in antenna single band antenna device, a built-in single band antenna is formed into a conductive pattern on a board extended from the upper side of a main PCB. A whip antenna is connected to the built-in single band antenna, and contained in the mobile terminal when the whip antenna is retracted. A whip antenna driver extends or retracts the whip antenna. A duplexer separates an RF signal received from the built-in single band antenna from an RF signal to be transmitted to the built-in single band antenna. A controller processes the RF signals received at and transmitted from the duplexer and controls the whip antenna driver to extend the whip antenna in a speech state or upon a call attempt from a user.Type: GrantFiled: September 20, 2001Date of Patent: April 26, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-In Ha, Wan-Jin Choi, Dong-Hwan Kim, Jun-Kyu Kang
-
Publication number: 20050030233Abstract: Disclosed is a ground connecting apparatus for a mobile terminal, in which grounds formed on the terminal are directly or indirectly connected so as to reduce an SAR value, thereby adjusting a connection length of the grounds.Type: ApplicationFiled: July 19, 2004Publication date: February 10, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seon-Kyeng Kim, Wan-Jin Choi, Ju-Hyung Lee, Jung-Ho Park
-
Publication number: 20040204027Abstract: A portable terminal having a tuner for changing an antenna radiation pattern is disclosed. In the portable terminal, a main body has a main body PCB and a main body ground defined in the main body PCB. A folder is rotatably connected to the main body by a hinge device. An antenna device is provided at an upper end of the main body. The tuner is formed at a predetermined position of the main body in the vicinity of the antenna device, for changing a current distribution of the main body and thus changing an antenna radiation pattern of the portable terminal.Type: ApplicationFiled: April 29, 2004Publication date: October 14, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jung-Ho Park, Wan-Jin Choi, Seonk-Kyeng Kim, Ho-Soo Seo, Won-Chan Kim, Jae-Joon Choi, Taig-Jong Yoo
-
Patent number: 6662021Abstract: A mobile communication system has a multi-band antenna capable of receiving and processing signals of GPS, CDMA, and PCS bands. In the system, a GPS processing section receives a signal of a first frequency band, so as to generate global positioning information. A communication signal processing section receives signals of a second frequency band lower than the first frequency band and a third frequency band higher than the first frequency band, demodulates the received signals , while modulating signals to be transmitted of the second frequency band and the third frequency band and outputting the modulated signals. The multi-band antenna has a dual-pitch helical antenna which includes first and second helical coil portions having different pitches, so that the first and second helical coil portions have different impedances for the signals of the first to third frequency bands.Type: GrantFiled: October 15, 2002Date of Patent: December 9, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-Kyu Kang, Dong-In Ha, Wan-Jin Choi, Jung-Ho Park, Dong-Hwan Kim