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Class Information
Number: 455/340
Name: Telecommunications > Receiver or analog modulated signal frequency converter > With particular receiver circuit > Coupling or decoupling between stages > Variably tunable or adjustable
Description: Systems wherein the coupling or decoupling means is recited as variably tunable or adjustable whereby the extent of the effective coupling or the width of the band passed by the network may be varied.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616939 |
Receiver and electronic device using the same |
Nov. 10, 2009 |
| 7599675 |
Method and apparatus for receiving radio frequency signals |
Oct. 6, 2009 |
| 7593707 |
Method and system for compensation of DC offset in an RF receiver |
Sep. 22, 2009 |
| 7587192 |
Balanced mixer with calibration of load impedances |
Sep. 8, 2009 |
| 7580483 |
Trimming of local oscillation in an integrated circuit radio |
Aug. 25, 2009 |
| 7579912 |
Method and system for multiple tuner application using a low noise broadband distribution amplifier |
Aug. 25, 2009 |
| 7555275 |
Systems, methods and devices for dual closed loop modulation controller for nonlinear RF amplifier |
Jun. 30, 2009 |
| 7545889 |
Blocker performance in a radio receiver |
Jun. 9, 2009 |
| 7515895 |
System and method for on-chip filter tuning |
Apr. 7, 2009 |
| 7512391 |
Self-aligning resonator filter circuit and wideband tuner circuit incorporating same |
Mar. 31, 2009 |
| 7499694 |
Tuner alignment |
Mar. 3, 2009 |
| 7499695 |
Configurable all-digital coherent demodulator system for spread spectrum applications |
Mar. 3, 2009 |
| 7460587 |
Electronic circuit for performing fractional time domain interpolation and related devices and methods |
Dec. 2, 2008 |
| 7450920 |
Method and system for compensation of DC offset in an RF receiver |
Nov. 11, 2008 |
| 7444132 |
Apparatus, and associated method, for facilitating dynamic filtering of a receive signal |
Oct. 28, 2008 |
| 7437139 |
Method and apparatus for calibrating filtering of a transceiver |
Oct. 14, 2008 |
| 7433663 |
Automatic gain control system for multiple receiving antennae |
Oct. 7, 2008 |
| 7433668 |
Controlling Q-factor of filters |
Oct. 7, 2008 |
| 7430406 |
Gain control in a wireless device |
Sep. 30, 2008 |
| 7421252 |
Center frequency control of an integrated phase rotator band-pass filter using VCO coarse trim bits |
Sep. 2, 2008 |
| 7415259 |
Automatic gain control for satellite digital audio radio service receiver, method of automatically controlling gain and SDARS receiver incorporating the same |
Aug. 19, 2008 |
| 7409197 |
Transceiver with receive path overload protection and method |
Aug. 5, 2008 |
| 7398065 |
Programmable sampling band pass filter |
Jul. 8, 2008 |
| 7376400 |
System and method for digital radio receiver |
May. 20, 2008 |
| 7376407 |
System and method for dynamic impedance tuning to minimize return loss |
May. 20, 2008 |
| 7359691 |
High frequency interference-cut filter circuit |
Apr. 15, 2008 |
| 7333467 |
Receiver circuit and method using selectively variable amplification for receiving time signals from different transmitters |
Feb. 19, 2008 |
| 7333790 |
Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains |
Feb. 19, 2008 |
| 7333791 |
Use of an image reject mixer in a forward data channel tuner |
Feb. 19, 2008 |
| 7310507 |
Filter circuit permitting adjustment of cutoff frequency |
Dec. 18, 2007 |
| 7289784 |
Active tunable filter circuit |
Oct. 30, 2007 |
| 7286811 |
Local oscillator apparatus and method |
Oct. 23, 2007 |
| 7283840 |
Reconfigurable analog baseband for a single-chip dual-mode transceiver |
Oct. 16, 2007 |
| 7251466 |
Television receiver including an integrated band selection filter |
Jul. 31, 2007 |
| 7221958 |
Received signal filtering for enhanced selectivity |
May. 22, 2007 |
| 7215939 |
Apparatus and method for detecting ripples caused by multipath propagation and controlling receiving antenna and tuner |
May. 8, 2007 |
| 7194247 |
Dual-channel passband filtering system using acoustic resonators in lattice topology |
Mar. 20, 2007 |
| 7184733 |
High frequency receiving device, integrated circuit used for the same, and TV receiver using them |
Feb. 27, 2007 |
| 7184730 |
Automatic gain control system having a wide range of continuous gain control |
Feb. 27, 2007 |
| 7177622 |
Digital tuner |
Feb. 13, 2007 |
| 7171185 |
Direct conversion receiver and DC offset reducing method |
Jan. 30, 2007 |
| 7161416 |
Programmable filter |
Jan. 9, 2007 |
| 7157945 |
Window comparator and method of providing a window comparator function |
Jan. 2, 2007 |
| 7158774 |
Method for tuning a filter |
Jan. 2, 2007 |
| 7149488 |
Direct tuning of radio receiver integrated circuit |
Dec. 12, 2006 |
| 7139547 |
Integrated direct conversion satellite tuner |
Nov. 21, 2006 |
| 7120416 |
Semiconductor device and receiver |
Oct. 10, 2006 |
| 7116958 |
Interference rejection in a radio receiver |
Oct. 3, 2006 |
| 7106149 |
Switchable tuneable bandpass filter with optimized frequency response |
Sep. 12, 2006 |
| 7076232 |
Method and apparatus for DC offset cancellation |
Jul. 11, 2006 |
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