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公开(公告)号：MY114796A
公开(公告)日：2003-01-31
申请号：MYPI9603598
申请日：1996-08-29
Applicant: QUALCOMM INC
Inventor： PITTA THOMAS A , WEILAND ANA L , PETERZELL PAUL E , WALLACE RAYMOND C , KORNFELD RICHARD K
Abstract: A DUAL-BAND ANTENNA SYSTEM FOR USE IN A PORTABLE COMMUNICATIONS DEVICE IS DISCLOSED HEREIN. THE ANTENNA SYSTEM INCLUDES AN ANTENNA ELEMENT FOR RADIATING ELECTROMAGNETIC ENERGY WITHIN LOW-BAND AND HIGH-BAND WAVELENGTH RANGES. IN A PREFERRED EMBODIMENT, A LOW-BAND ISOLATOR NETWORK, COUPLED TO THE ANTENNA ELEMENT, PROVIDES SIGNAL ISOLATION BETWEEN HIGH-BAND AND LOW-BAND SIGNAL PATHS DURING HIGH-BAND OPERATION. SIMILARLY, A HIGH-BAND ISOLATOR NETWORK PROVIDES SIGNAL ISOLATION, DURING OPERATION OVER THE LOW-BAND RANGE OF WAVELENGTHS, BETWEEN THE HIGH-BAND AND LOW-BAND SIGNAL PATHS. DURING TRANSMIT AND RECEIVE OPERATION, LOW-BAND AND HIGH-BAND ELELCTROMAGNETIC ENERGY DIRECTED THROUGH THE ANTENNA IS PASSED BY THE LOW-BAND AND HIGH-BAND ISOLATOR NETWORKS, RESPECTIVELY. ALSO INCLUDED ARE LOW-BAND AND HIGH-BAND MATCHING NETWORKS WHICH COUPLE THE LOW-BAND AND HIGH-BAND ISOLATOR NETWORKS TO LOW-BAND AND HIGH-BAND TRANSCEIVER CIRCUITRY.
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公开(公告)号：BR9606630A
公开(公告)日：1998-01-06
申请号：BR9606630
申请日：1996-09-11
Applicant: QUALCOMM INC
Inventor： PITTA THOMAS A , PETERZELL PAUL E , KORNFELD RICHARD K , WEILAND ANA L , WALLACE RAYMOND C
Abstract: A dual-band antenna system for use in a portable communications device is disclosed herein. The antenna system includes an antenna element for radiating electromagnetic energy within low-band and high-band wavelength ranges. In a preferred embodiment, a low-band isolator network, coupled to the antenna element, provides signal isolation between high-band and low-band signal paths during high-band operation. Similarly, a high-band isolator network provides signal isolation, during operation over the low-band range of wavelengths, between the high-band and low-band signal paths. During transmit and receive operation, low-band and high-band electromagnetic energy directed through the antenna is passed by the low-band and high-band isolator networks, respectively. Also included are low-band and high-band matching networks which couple the low-band and high-band isolator networks to low-band and high-band transceiver circuitry.
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公开(公告)号：HK1043883A1
公开(公告)日：2002-09-27
申请号：HK02105350
申请日：2002-07-19
Applicant: QUALCOMM INC
Inventor： CANTEY PATRICK S III , SALDANA ROLANDO A , PITTA THOMAS A
Abstract: A multiple band voltage controlled oscillator capable of generating multiple operating frequencies, and a method of generating multiple operating frequencies, includes a tank circuit having a diode element and an impedance element with a radio frequency impedance in parallel with the diode element, a PIN diode connected across a portion of the inductance of the impedance element which selectively shorts the portion of the inductance of the impedance element when activated, a switch connected to selectively enable the PIN diode and correspondingly partially short the inductance of the impedance element, thereby scaling the radio frequency impedance of the tank circuit, and an oscillator circuit responsively connected to the PIN diode for varying the output of the voltage controlled oscillator based on the radio-frequency impedance present.
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公开(公告)号：AU4054300A
公开(公告)日：2000-10-16
申请号：AU4054300
申请日：2000-03-28
Applicant: QUALCOMM INC
Inventor： CANTEY PATRICK S III , SALDANA ROLANDO A , PITTA THOMAS A
Abstract: A multiple band voltage controlled oscillator capable of generating multiple operating frequencies, and a method of generating multiple operating frequencies, includes a tank circuit having a diode element and an impedance element with a radio frequency impedance in parallel with the diode element, a PIN diode connected across a portion of the inductance of the impedance element which selectively shorts the portion of the inductance of the impedance element when activated, a switch connected to selectively enable the PIN diode and correspondingly partially short the inductance of the impedance element, thereby scaling the radio frequency impedance of the tank circuit, and an oscillator circuit responsively connected to the PIN diode for varying the output of the voltage controlled oscillator based on the radio-frequency impedance present.
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公开(公告)号：CA2368011A1
公开(公告)日：2000-10-05
申请号：CA2368011
申请日：2000-03-28
Applicant: QUALCOMM INC
Inventor： PITTA THOMAS A , SALDANA ROLANDO A , CANTEY PATRICK S III
Abstract: A voltage controlled oscillator (10) can operate in multiple frequency bands . One or more PIN diodes (20) are connected parallel to inductances (38) and selectively shorts them out. This selectively scales the RF impedance of the tank circuit (16), thereby applying the correct voltages for oscillator (24) to produce the correct frequencies.
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Patent Agency Ranking
公开(公告)号：AU770143B2
公开(公告)日：2004-02-12
申请号：AU4054300
申请日：2000-03-28
Applicant: QUALCOMM INC
Inventor： CANTEY PATRICK S III , SALDANA ROLANDO A , PITTA THOMAS A
Abstract: A multiple band voltage controlled oscillator capable of generating multiple operating frequencies, and a method of generating multiple operating frequencies, includes a tank circuit having a diode element and an impedance element with a radio frequency impedance in parallel with the diode element, a PIN diode connected across a portion of the inductance of the impedance element which selectively shorts the portion of the inductance of the impedance element when activated, a switch connected to selectively enable the PIN diode and correspondingly partially short the inductance of the impedance element, thereby scaling the radio frequency impedance of the tank circuit, and an oscillator circuit responsively connected to the PIN diode for varying the output of the voltage controlled oscillator based on the radio-frequency impedance present.
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公开(公告)号：CA2315185A1
公开(公告)日：1999-06-24
申请号：CA2315185
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： PITTA THOMAS A , OLIVAS JOSE F , TIDWELL SUSAN M , MARTHENS DARRIN , WALLACE RAYMOND C
Abstract: A connector interface (68) provides direct connection from a wireless communication device to a coaxial connector. The wireless communication device has a housing with an antenna connector. The antenna connector has a hollow pseudo-cylindrical center providing an opening through the housing. The connector interface has a custom connector (66) comprised of an outer conductive shell (72), a nonconductive spacer (76) and a ground probe (78). The outer conductive shell (72) is mounted on the printed circuit board (70). The nonconductive spacer (76) is disposed within the hollow pseudo-cylindrical center of the outer conductive shell (72). When the connector interface is connected to the wireless communication device, the outer conductive shell (72) contacts the antenna connector and the ground probe extends through the opening into the housing to connect electrically to a ground potential within the housing.
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公开(公告)号：AU701323B2
公开(公告)日：1999-01-28
申请号：AU6974896
申请日：1996-09-11
Applicant: QUALCOMM INC
Inventor： PITTA THOMAS A , PETERZELL PAUL E , KORNFELD RICHARD K , WEILAND ANA L , WALLACE RAYMOND C
Abstract: A dual-band antenna system for use in a portable communications device is disclosed herein. The antenna system includes an antenna element for radiating electromagnetic energy within low-band and high-band wavelength ranges. In a preferred embodiment, a low-band isolator network, coupled to the antenna element, provides signal isolation between high-band and low-band signal paths during high-band operation. Similarly, a high-band isolator network provides signal isolation, during operation over the low-band range of wavelengths, between the high-band and low-band signal paths. During transmit and receive operation, low-band and high-band electromagnetic energy directed through the antenna is passed by the low-band and high-band isolator networks, respectively. Also included are low-band and high-band matching networks which couple the low-band and high-band isolator networks to low-band and high-band transceiver circuitry.
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公开(公告)号：FI971759A0
公开(公告)日：1997-04-24
申请号：FI971759
申请日：1997-04-24
Applicant: QUALCOMM INC
Inventor： PITTA THOMAS A , PETERZELL PAUL E , KORNFELD RICHARD K , WEILAND ANA L , WALLACE RAYMOND C
Abstract: A dual-band antenna system for use in a portable communications device is disclosed herein. The antenna system includes an antenna element for radiating electromagnetic energy within low-band and high-band wavelength ranges. In a preferred embodiment, a low-band isolator network, coupled to the antenna element, provides signal isolation between high-band and low-band signal paths during high-band operation. Similarly, a high-band isolator network provides signal isolation, during operation over the low-band range of wavelengths, between the high-band and low-band signal paths. During transmit and receive operation, low-band and high-band electromagnetic energy directed through the antenna is passed by the low-band and high-band isolator networks, respectively. Also included are low-band and high-band matching networks which couple the low-band and high-band isolator networks to low-band and high-band transceiver circuitry.
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公开(公告)号：AU1914099A
公开(公告)日：1999-07-05
申请号：AU1914099
申请日：1998-12-14
Applicant: QUALCOMM INC
Inventor： WALLACE RAYMOND C , OLIVAS JOSE F , TIDWELL SUSAN M , PITTA THOMAS A , MARTHENS DARRIN
Abstract: A connector interface provides direct connection from a wireless communication device to a coaxial connector. The wireless communication device has a housing with an antenna connector. The antenna connector has a hollow pseudo-cylindrical center providing an opening through the housing. The connector interface has a custom connector comprised of an outer conductive shell, a nonconductive spacer and a ground probe. The outer conductive shell is mounted on the printed circuit board. The nonconductive spacer is disposed within the hollow pseudo-cylindrical center of the outer conductive shell. When the connector interface is connected to the wireless communication device, the outer conductive shell contacts the antenna connector and the ground probe extends through the opening into the housing to connect electrically to a ground potential within the housing.
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