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Six-year-old Robert W. Patch granted a patent for a "toy truck".
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| Number | Title | Issue Date |
| 8010073 | System and method for adjusting power amplifier output power in linear dB steps A power amplifier for use in a transmitter enables linear in dB output power control capability with 2 dB step sizes. ... | 08/30/2011 |
| 7369089 | Antenna with multiple-band patch and slot structures A multiple-band antenna having a plurality of operating frequency bands is provided. The antenna includes a plurality of structures configured for operation in respective ones of the plurality of operating frequency bands, and a plurality of structures configured fo... | 05/06/2008 |
| 7343137 | Circuit, switching module comprising the same, and use of said switching module The invention relates to a circuit comprising an antenna input (1), a signal input (2) and a signal output (3), and a switching unit (4), wherein the antenna input (1) is connected to a first protection device (6) against el... | 03/11/2008 |
| 7304615 | Wideband receiving antenna device An antenna device includes a substrate formed of a dielectric body or a magnetic body, first to third radiation conductors wound in spirals around outer circumferential surfaces of the substrate, a plurality of capacitance elements spread over the first radiation co... | 12/04/2007 |
| 7268688 | Shielded RFID transceiver with illuminated sensing surface A transceiver for reading RFID tags has a ferrite core antenna substantially circular in cross-section having a transmitting and receiving face producing substantially no RF energy below a plane of the transmitting and receiving face outside a peripheral surface of ... | 09/11/2007 |
| 7256741 | Antenna with multiple-band patch and slot structures A multiple-band antenna having a plurality of operating frequency bands is provided. The antenna includes a plurality of structures configured for operation in respective ones of the plurality of operating frequency bands, and a plurality of structures configured fo... | 08/14/2007 |
| 7158049 | Wireless communication circuit The invention includes a wireless communication circuit and a method of communicating with wireless signals that feature a tank circuit having an inductor connected in parallel with a capacitor circuit. The capacitor circuit includes a pair of capacitors coupled in ... | 01/02/2007 |
| 7158771 | Integrated circuit transponder having a plurality of high-gain radio frequency signal inputs A high gain input stage for a radio frequency transponder uses an amplifier for increasing a magnitude of an input signal. A DC bias circuit is used for controlling the operation of the amplifier. A resonant circuit is coupled between the amplifier and the DC bias c... | 01/02/2007 |
| 7044373 | Radio frequency identification systems applications The invention relates to the use of RFID systems for use with items of interest having RFID tags, such as in a library. The invention has particular applicability to determining the location, order, and other information regarding such items. ... | 05/16/2006 |
| 7023387 | Antenna with multiple-band patch and slot structures A multiple-band antenna having a plurality of operating frequency bands is provided. The antenna includes a plurality of structures configured for operation in respective ones of the plurality of operating frequency bands, and a plurality of structures configured fo... | 04/04/2006 |
| 6963314 | Dynamically variable beamwidth and variable azimuth scanning antenna A dynamically variable beamwidth and/or variable azimuth scanning antenna includes a plurality of active radiating columns and a plurality of continuously adjustable mechanical phase shifters. The columns define a beam having a beamwidth and an azimuth scan angle. E... | 11/08/2005 |
| 6919856 | Ferrite antenna The invention relates to a ferrite antenna, comprising at least one winding (4), which is arranged around a core (2) consisting of ferrite material. A second core (3), consisting of ferrite material and running coaxially to the first core (2 | 07/19/2005 |
| 6917336 | Miniature ultra-wideband active receiving antenna According to some aspects of this invention, a compact, broadband active receiving antenna uses one or more high transconductance transistors such as Field Effect Transistor(s) paired with another Transistor and arranged in a Cascode amplifier configuration. Some em... | 07/12/2005 |
| 6876834 | Power inserter configuration for wireless modems A wireless modem contains a power inserter circuit along with the traditional modem components. The power inserter circuit isolates the modem components from DC power that is inserted on the coaxial cable to a transverter. One embodiment of the present invention pro... | 04/05/2005 |
| 6366164 | Integrated circuit layout for LF - signal acquisition in the case of contactless data transmission Integrated circuit layout for LF signal acquisition in the case of contactless data transmission Known circuit layouts for LF signal acquisition only provide for a very short communication distance between transponder and base unit, and consist of several... | 04/02/2002 |
| 5914640 | Method and system for matching the input impedance of an RF amplifier an antenna to impedance A low noise RF input amplifier circuit has an input impedance ZIN for matched-impedance coupling to an antenna having a resistive impedance RA. The amplifier circuit has an input and output nodes, an inverting amplifier, and a feedba... | 06/22/1999 |
| 5893023 | Satellite receiver including operating voltage supply arrangement suitable for different antenna assemblies A satellite receiver which is capable of being connected to different antenna assemblies which require different operating voltages, includes a switch mode power supply which supplies the different operating voltages. A microprocessor controls the duty cy... | 04/06/1999 |
| 5678198 | System for controlling signal level at both ends of a transmission link, based upon a detected value The present invention is directed to a dynamic range enhancing system for increasing the dynamic range of a transmission link, characterized as either an analog or digital link. The system includes a pre-processing unit, provided at a first location, that... | 10/14/1997 |
| 5483693 | Combining antenna element signals A vehicle radio receiver circuit includes two antennas for mounting on the vehicle. The antennas are significantly less than one quarter of a wavelength in length at the desired frequency of operation, and the outputs of the antenna elements are coupled t... | 01/09/1996 |
| 5457811 | System for controlling signal level at both ends of a transmission sink based on a detected value The present invention is directed to a dynamic range enhancing system for increasing the dynamic range of a transmission link, and also to a process for increasing the dynamic range of a transmission link. An instruction setting process is also provided f... | 10/10/1995 |
| 5428830 | Concealed antenna system with remote variable gain RF amplifier A concealed antenna system for motor vehicle radios replaces a radio chassis preamplifier with a remote radio frequency amplifier packaged with a filter module adjacent the antenna conductors to reduce the noise floor before transmitting the signal by a h... | 06/27/1995 |
| 5321849 | System for controlling signal level at both ends of a transmission link based on a detected valve The present invention is directed to a dynamic range enhancing system for increasing the dynamic range of a transmission link, and also to a process for increasing the dynamic range of a transmission link. An instruction setting process is also provided f... | 06/14/1994 |
| 5311198 | Active antenna An antenna, which may be a search coil, is connected to an operational amplifier circuit which provides negative impedances, each of which is in the order of magnitude of the positive impedances which characterize the antenna. The antenna is connected to ... | 05/10/1994 |
| 5301358 | Automatic antenna tuning method and apparatus A wristwatch paging receiver is provided with an antenna matching network that automatically retunes the network at the beginning of a listening interval. During the retuning operation, a control signal is applied to a variable tuning element in the match... | 04/05/1994 |
| 5296866 | Active antenna An antenna, which may be a search coil, connected to an active circuit which provides negative impedances, each of which is of the order of magnitude of the positive impedances which characterize this active antenna. In one embodiment, one coil terminal i... | 03/22/1994 |
| 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 |
| 5179731 | Frequency conversion circuit A circuit array for frequency translation by means of quadrature heterodyne signals has very low quadrature errors even at very high frequencies and is monolithically integratable with little external circuitry. The circuit array includes a first mixer wh... | 01/12/1993 |
| 5170493 | Combined low frequency receive and high frequency transceive antenna system and method A dual function antenna system and method. A system is provided for using a single antenna for both the reception of low frequency navigational signals, such as LORAN-C, and high frequency communications signals in the VHF region. The antenna is at a remo... | 12/08/1992 |
| 5019830 | Amplified FM antenna with parallel radiator and ground plane An FM wave antenna including a coaxial cable, a parallel conductor which are provided parallel to a metal conductor such as a vehicle body and an amplifier provided between the coaxial cable and the parallel conductor. The coaxial cable is made up of a ce... | 05/28/1991 |
| 4947180 | FM antenna An antenna assembly which is suited for receiving FM signals, comprises a pair of insulating disc shaped substrates which each have conductive patterns deposited on one surface thereof. The first insulating substrate has an electrically conductive loop el... | 08/07/1990 |
| 4903034 | Electrical signal separating device having isolating and matching circuitry The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolatin... | 02/20/1990 |
| 4903035 | Electrical signal separating device having isolating and matching circuitry The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolatin... | 02/20/1990 |
| 4805232 | Ferrite-core antenna A ferrite core antenna for use in the VHF and UHF range has a first coil on the core which is connected to a capacitance selected to resonate with the inductance of the coil at the desired frequency of operation. The ferrite core antenna also has a second... | 02/14/1989 |
| 4739516 | Frequency tuned antenna assembly A fixed length antenna rod projects from a housing enclosing a pre-amplifier circuit connecting it to the front end of a FM receiver. The antenna rod is mounted at an optimum signal reception attitude by the flange of a bracket to which the housing is sec... | 04/19/1988 |
| 4667342 | Tunable receiver input circuit A tunable receiver input circuit consists of an emitter follower amplifying circuit with a resonant circuit connected between emitter and ground. The impedance of the resonant circuit is high at frequencies away from the resonant frequency. The mixer circ... | 05/19/1987 |
| 4654669 | Electrical signal separating device for window antenna having isolating and matching circuitry The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolatin... | 03/31/1987 |
| 4554678 | Wireless receiver having crystal filter at outputs of preamplifier A wireless superheterodyne receiver is provided having an antenna for receiving wireless transmissions, a preamplifier having an input connected to the antenna and an output, a crystal filter having an input connected to the output of the preamplifier and... | 11/19/1985 |
| 4531234 | Optimizing antenna interface for automobile radio receivers An automatic signal optimizing interface for connection between the antenna of an automobile radio receiver and the receiver itself processes the RF signal received by the antenna and provides an improved output signal to the automobile receiver which is ... | 07/23/1985 |
| 4442434 | Antenna circuit of the negative impedance type An aerial circuit comprises a first antenna in connection with an impedance, which is a "negative impedance", whereby a broad frequency range is achieved. The "negative impedance" is based on a second antenna similar to the first antenna, whereby the resu... | 04/10/1984 |
| 4429417 | Integrated antenna, amplifier and converter for microwave frequencies A microwave antenna has associated therewith an integrated amplifier and frequency converter circuit for operating frequencies of from 1 Ghz to 40 Ghz. The circuit may be tuned by variation of a voltage regulated supply which is impressed onto the center ... | 01/31/1984 |
