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| Number | Title | Issue Date |
| 7359677 | Device and methods for high isolation and interference suppression switch-filter Systems and methods are provided for a stacked die configuration of a high isolation switch and a rejection filter where transmit and receive signals are desired to have a high out-of-band rejection and a low loss band-pass region. In some aspects of the invention t... | 04/15/2008 |
| 7349189 | Electrical surge protection using in-package gas discharge system The present invention comprises using an electrode (107) arranged with a small gap or opening (108) placed in parallel with an electrically sensitive component (105) and housed with a gas inside an enclosure (100) to form a discharge gap.... | 03/25/2008 |
| 7283797 | System and method of improving the dynamic range of a receiver in the presence of a narrowband interfering signal An apparatus, system, and method improve the dynamic range of a receiver in the presence of a narrowband interfering signal. An error rate of a received signal is computed, and the input intercept point of a low noise amplifier in the receiver is adjusted based on t... | 10/16/2007 |
| 7283843 | Systems and methods for receiver upgrade Systems and methods for an upgradeable and/or reconfigurable receiver are provided. In general, the present invention is directed to providing systems and methods for designing an electronic communication system having easy and cost effective upgradeable receiver sy... | 10/16/2007 |
| 7250899 | GPS receiver with improved immunity to collocated transmissions and method therefor A method and apparatus for limiting the effect of interfering transmission on a Global Positioning System (GPS) receiver is disclosed. A first mode of operation of the GPS receiver is provided wherein the AGC of the receiver is operated in a linear state. A second m... | 07/31/2007 |
| 7224738 | Method of high-frequency signal transmission A method for high-frequency signal transmission between a transmitter and a receiver. A signal for generating a natural electromagnetic alternating field is linked with HF transmission signal, and the HF transmission signal is extracted from the linked signals. ... | 05/29/2007 |
| 7218907 | Method and circuit for down-converting a signal Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing ra... | 05/15/2007 |
| 6954624 | Transmitter and wireless communication device having a low power bypass branch A transmitter into which a modulated signal (TX) is fed, the transmitter comprising an adjustable amplifier (1) for adjusting transmission power level, the modulated signal (TX) being fed into to the input of the amplifier (1), an amplification branch ... | 10/11/2005 |
| 6947840 | GPS receiver with improved immunity to burst transmissions GPS signals are typically weak and thus easily interfered with by other radio transmissions in the same or adjacent frequency bands. Interference can be especially problematic when the GPS receiver is co-located with a communications device that includes a radio tra... | 09/20/2005 |
| 6889036 | Integrated frequency selectable resonant coupling network and method thereof An integrated center frequency selectable resonant coupling network suited for use in an integrated circuit is disclosed. The network includes an integrated coupling transformer having a secondary winding for coupling to a load and a primary winding for coupling to ... | 05/03/2005 |
| 6813510 | System for automatically adjusting receive path gain The present invention provides a system and method for automatically compensating for transmission line losses at a wireless base station antenna site. Transmission line losses are measured and the result of the measurement is used to adjust a variable gain amplifie... | 11/02/2004 |
| 6807402 | Device for generating RF signals at multiple frequencies A device for generating a radio frequency electrical signals, delivering at least two separate signals having different frequencies, in the form of signals delivered by different primary sources and amplified with a predetermined gain. The device comprises a combini... | 10/19/2004 |
| 6795697 | RF receiver switches RF switches and methods of use are provided. In one embodiment, a RF switch includes first and second switch assemblies, each comprising an elongate member and a magnetic housing on an end of the member. The magnet is disposed between contact pads for first and seco... | 09/21/2004 |
| 6725026 | Intermodulation control device and method in mobile communication system There is provided an intermodulation (IMD) control device and method in a mobile communication system. In the IMD control device, an LNA performs low noise amplification on an input RF signal, a first switch is connected to the LNA in parallel, for switching accordi... | 04/20/2004 |
| 6553216 | RF tunable filter arrangement with tunable image trap A tuner includes a tunable filter for selecting a desired RF signal in response to a tuning control signal and a tunable image trap for rejecting the undesired image signal corresponding to the desired RF signal responsive to the tuning control signal cou... | 04/22/2003 |
| 6253070 | Diode amplifier bypass circuit RF circuit includes an amplifier and a shunt. The shunt is controlled to provide a path around the amplifier for avoiding intermodulation distortion caused by overdriving the amplifier. The shunt is formed by a diode with capacitors that match to the RF c... | 06/26/2001 |
| 6128466 | Wireless receiving subsystem A wireless receiving subsystem operatively connectable to a broadcast receiver unit having a frequency tuner has an antenna with a feed point, an amplifier located essentially at the feed point, and a transmission line extending from the feed point of the... | 10/03/2000 |
| 5930692 | Method and apparatus for increasing receiver immunity to interference The method and apparatus of the present invention improve the immunity to interference of a radio receiver. The power level of a received signal is detected. If the power level meets or exceeds a predetermined power threshold, the low noise amplifier is b... | 07/27/1999 |
| 5896183 | TV or radio broadcast transmission line amplifier with switch bypass controlled at the receiver side A wireless receiving subsystem operatively connectable to a broadcast receiver unit having a frequency tuner has an antenna with a feed point, an amplifier located essentially at the feed point, and a transmission line extending from the feed point of the... | 04/20/1999 |
| 5722063 | Method and apparatus for increasing receiver immunity to interference The method and apparatus of the present invention improve the immunity to interference of a radio receiver. The power level of a received signal is detected. If the power level meets or exceeds a predetermined power threshold, the low noise amplifier is b... | 02/24/1998 |
| 5230096 | Radio receiver antenna arrangements A radio receiver antenna arrangement incorporating an RF pre-amplifier (5) wherein circuitry (11 to 21) is provided for by-passing the pre-amplifier when strong signals are picked up by the antenna (1) to avoid overloading the pre-amplifier.... | 07/20/1993 |
| 4930035 | Radio frequency limiter circuit A radio frequency limiter having a radio frequency power divider having an input and a plurality of outputs; at least one diode connected in shunt with each one of the outputs of the power divider; and, a power combiner having an output and a plurality of... | 05/29/1990 |
| 4214211 | Electrostatic destruction preventing circuit for use in a receiver In an electrostatic destruction preventing circuit employed in a receiver, a capacitor is connected between an antenna terminal and the primary winding of a high frequency transformer, and a spark gap discharge element is connected in parallel to the capa... | 07/22/1980 |
| 3965426 | Frequency modulated signal pre-amplifier with amplitude modulated signal bypass For use with radio receivers adapted to receive both frequency and amplitude modulated signals, a frequency modulated signal preamplifier adapted to be serially connected between the antenna input lead and antenna connector of such a radio, the pre-amplif... | 06/22/1976 |
