Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7406301 | Modulation-demodulation apparatus and wireless communication apparatus A modulation-demodulation apparatus of a relatively simple arrangement is able to prevent a bad influence caused due to interference between two local oscillators and a portable wireless communication apparatus uses this modulation-demodulation apparatus. In a modul... | 07/29/2008 |
| 7342462 | Quadrature LC voltage controlled oscillator with opposed bias and coupling control stages A voltage controlled oscillator unit is provided with cross coupled voltage controlled oscillators to generate quadrature phases. One control stage adjusts coupling between the oscillators. Another control stage adjusts the tail current that applies operating bias t... | 03/11/2008 |
| 7315575 | Equalization strategy for dual-polarization optical transport system A method is provided for an equalization strategy for compensating channel distortions in a dual-polarization optical transport system wherein the received signal includes a complex signal of a first transmitted polarization component and a complex signal of a secon... | 01/01/2008 |
| 7272373 | Ratiometric clock systems for integrated receivers and associated methods A ratiometric clock system for an integrated receiver and associated method are disclosed that provide an advantageous solution for combining digital signal processing (DSP) circuitry on the same integrated circuit as mixer and local oscillator (LO) generation circu... | 09/18/2007 |
| 7250895 | Multiple input analog-to-digital conversion apparatus and radio receiver using the same A multiple input AD conversion apparatus includes a first unit AD converter including a plurality of first conversion stages connected in cascade to convert a first analog input signal to a first digital output signal, a second unit AD converter including a pluralit... | 07/31/2007 |
| 7245655 | Dual antenna receiver Structures and techniques for implementing multiple-antenna configurations within a radio frequency receiver are provided. In one aspect, a modularized multi-antenna receiver is provided having multiple independent microelectronic dice mounted on a common module sub... | 07/17/2007 |
| 7164895 | Antenna tuned circuit for a superheterodyne receiver A multi-band receiver in which characteristics including a tracking error are improved is provided with a variable frequency oscillator circuit, a variable divider circuit (39) for dividing an oscillation signal (SVCO) of the variable frequency oscillator cir... | 01/16/2007 |
| 7146140 | Quadrature oscillator and methods thereof Briefly, exemplary embodiments of the invention may provide devices and methods to provide precise and/or low phase-noise quadrature oscillation signals. A quadrature oscillator in accordance with an exemplary embodiment of the invention may include, for example, a ... | 12/05/2006 |
| 7116956 | Power oscillator for control of waveshape and amplitude An RF power oscillator for contactless card antennas shapes a carrier signal at the operating frequency utilizing a delay circuit having a number of taps for delaying the carrier signal by different lengths of time. The delayed signals are input into a buffer and ou... | 10/03/2006 |
| 7046977 | Apparatus for generating multiple clock signals of different frequency characteristics A terminal includes at least one wireless communication application module (1) and a plurality of further application modules (4, 5, 6, 8). Multiple radio frequency clock signals are generated for the different modules having respective clock frequency... | 05/16/2006 |
| 7043026 | Method for removing AM neighboring interference and a circuit for the same An AM neighboring interference removing method and circuit is provided which can select only a desired AM modulation wave even if an interference AM modulation wave is partially superposed upon the desired AM modulation wave. An AM modulation wave desired to be rece... | 05/09/2006 |
| 6996388 | High-frequency signal receiver A receiver is operable even if including a local oscillator generating a signal at high frequencies but not in a wide frequency range. The receiver includes: a first frequency converter for mixing a received signal with a first local oscillation signal to convert th... | 02/07/2006 |
| 6470191 | Switchable up-conversion loop for a transmitting stage of a mobile phone The switchable up-conversion loop device for a transmitting stage of a mobile phone having multiple transmitting frequency bands includes a phase detector (21) for generating a phase detector output signal in response to a phase difference between an inpu... | 10/22/2002 |
| 6407449 | Pin layout of semiconductor integrated circuits including dual band amplifier and receiving mixer A pin layout which prevents degradation of a frequency characteristic of a low noise amplifier and a receiving mixer included in a semiconductor integrated circuit for dual-band transmission/reception wherein the circuit of the low noise amplifier is prov... | 06/18/2002 |
| 5909644 | AM radio receiver An AM radio receiver of a double superheterodyne type. Where a first intermediate frequency is selected to be a low frequency of several kHz other than 0 kHz. A second intermediate frequency is selected to be several tens of kHz. A first local oscillator ... | 06/01/1999 |
| 5220683 | Ultra-widebandwidth compressive receiver An ultra-widebandwidth compressive receiver includes a power divider for processing a composite input signal consisting of individual input signals. The power divider provides a plurality of power divided signals to corresponding nondispersive delay lines... | 06/15/1993 |
| 4704737 | Compressive receiver having pulse width expansion A broadband receiver for converting an input radio frequency signal into output pulses includes provision for expanding the width of the output pulses (50) to permit pulse processing by conventional equipment at slower processing rates. A scanning local o... | 11/03/1987 |
| 4313212 | Electrical circuit arrangements, for example for use with communications receivers A fully digitally-controlled system is disclosed which employs synthesized communications receivers to measure received signal frequency with greater resolution than that provided by the receiver alone. Variable frequency I.F. translation is used to provi... | 01/26/1982 |
| 4254505 | Normalization method and apparatus used when quantitatively measuring the reception quality of a received frequency-modulated ultrashort-wave signal A frequency-modulated ultrashort-wave signal is received, but due to wave-reflection phenomena from physical bodies reflecting towards the receiving antenna is amplitude modulated, this amplitude modulation being dependent upon frequency. Derived from the... | 03/03/1981 |
