Kim E Beumer

US Patent:

6909886, Jun 21, 2005

Filed:

Aug 30, 2002

Appl. No.:

10/232351

Inventors:

Timothy M. Magnusen - Murphy TX, US
Kim E. Beumer - Richardson TX, US

Assignee:

Microtune ( Texas), L.P. - Plano TX

International Classification:

H04B001/10
H03K005/00

US Classification:

455307, 455324, 327552

Abstract:

A filter circuit includes a polyphase filter coupled to a first circuit component and a second circuit component. The first circuit component propagates four input current signals to the polyphase filter. The third and fourth input current signals are substantially one-hundred-eighty degrees out of phase with the first and second input current signals. The polyphase filter receives the input current signals and generates four output current signals that are out of phase with each other. The second circuit component generates first and second output signals using the four output current signals. The first and second output signals are ninety degrees out of phase with each other.

US Patent:

6922556, Jul 26, 2005

Filed:

Aug 30, 2002

Appl. No.:

10/232352

Inventors:

Kim E. Beumer - Richardson TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B001/28

US Classification:

455333, 4553431, 330296

Abstract:

A circuit for establishing a bias current includes a mixer, an amplifier, a bias resistor, a comparator, and a drive circuit. The mixer receives a drive voltage and at least a portion of a bias current. The amplifier is coupled to the mixer and receives at least a portion of the bias current. A bias resistor is coupled to the amplifier at a node and a bias voltage exists at the node. The comparator is coupled to the node and compares the bias voltage with a reference voltage. The comparator further generates an output signal based at least in part upon the comparison. The drive circuit generates the drive voltage in response to the output signal such that the bias voltage substantially equals the reference voltage thereby establishing the bias current.

US Patent:

6973288, Dec 6, 2005

Filed:

Oct 3, 2001

Appl. No.:

09/970311

Inventors:

Tom L. Davis - Carrollton TX, US
Kim E. Beumer - Richardson TX, US
Carey Ritchey - Plano TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B017/00

US Classification:

455 6711, 4551692, 4551804

Abstract:

Linearizer circuitry is disclosed for providing control signal outputs to operate a controllable attenuator throughout a relatively large dynamic range while maintaining a relatively consistent return loss. Preferred embodiment linearizer circuitry provides a series control current and a shunt control current for coupling to a PIN diode attenuator, such as may be configured in a π network or a T network. Preferably, differential pairs are utilized in providing each of the control current outputs.

US Patent:

6993310, Jan 31, 2006

Filed:

May 20, 2005

Appl. No.:

11/133954

Inventors:

Timothy M. Magnusen - Murphy TX, US
Kim E. Beumer - Richardson TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B 1/10

US Classification:

455302, 455307

Abstract:

A filter circuit includes a polyphase filter coupled to a first circuit component and a second circuit component. The first circuit component propagates four input current signals to the polyphase filter. The third and fourth input current signals are substantially one-hundred-eighty degrees out of phase with the first and second input current signals. The polyphase filter receives the input current signals and generates four output current signals that are out of phase with each other. The second circuit component generates first and second output signals using the four output current signals. The first and second output signals are ninety degrees out of phase with each other.

US Patent:

7242918, Jul 10, 2007

Filed:

Jan 30, 2006

Appl. No.:

11/343504

Inventors:

Timothy M. Magnusen - Murphy TX, US
Kim E. Beumer - Richardson TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B 1/10

US Classification:

455302, 455307

Abstract:

A filter circuit includes a polyphase filter coupled to a first circuit component and a second circuit component. The first circuit component propagates four input current signals to the polyphase filter. The third and fourth input current signals are substantially one-hundred-eighty degrees out of phase with the first and second input current signals. The polyphase filter receives the input current signals and generates four output current signals that are out of phase with each other. The second circuit component generates first and second output signals using the four output current signals. The first and second output signals are ninety degrees out of phase with each other.

US Patent:

7359686, Apr 15, 2008

Filed:

Feb 16, 2005

Appl. No.:

11/058966

Inventors:

Kim E. Beumer - Richardson TX, US
Peter Kipfelsberger - Ingolstadt, DE
Philip T. Hisayasu - Richardson TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B 17/02
H04B 11/28

US Classification:

455136, 4552451, 455333

Abstract:

A device for measuring voltage levels includes a root mean square (RMS) detector. The RMS detector includes a linear multiplier, a log converter, a low-pass filter and a temperature compensator. The linear multiplier multiplies a voltage of an input signal by the voltage of the input signal. The low-pass filter couples to an output of the linear multiplier. The log converter generates a logarithmic signal having a voltage that is logarithmically related to a voltage of an output of the low-pass filter. The temperature compensator adjusts the logarithmic signal based on a temperature of the RMS detector. The RMS detector is capable of determine an RMS voltage level of the input signal.

US Patent:

7640001, Dec 29, 2009

Filed:

Dec 20, 2005

Appl. No.:

11/316301

Inventors:

Michael D. Womac - McKinney TX, US
Armin G. Deiss - Richardson TX, US
Thomas Leigh Davis - Carrollton TX, US
Kim E. Beumer - Richardson TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B 1/10
H04B 1/06

US Classification:

455307, 4552321, 4552511

Abstract:

A system for filtering a signal includes a plurality of filter modules coupled in series. Each filter module includes a filter and a variable gain element. Each filter is capable of. receiving an input signal, attenuating a portion of the input signal that is outside a passband associated with the filter, and outputting at least a portion of the input signal that is within the passband associated with the filter. Each variable gain element is capable of receiving a control signal and inducing a gain in an output of the filter based on the control signal.

US Patent:

7751857, Jul 6, 2010

Filed:

Apr 15, 2008

Appl. No.:

12/103296

Inventors:

Kim E. Beumer - Richardson TX, US
Peter Kipfelsberger - Ingolstadt, DE
Philip T. Hisayasu - Richardson TX, US

Assignee:

Microtune (Texas), L.P. - Plano TX

International Classification:

H04B 1/38
H04B 1/16

US Classification:

455572, 4551271, 4553431, 323313

Abstract:

A device for measuring voltage levels includes a root mean square (RMS) detector. The RMS detector includes a linear multiplier, a log converter, a low-pass filter and a temperature compensator. The linear multiplier multiplies a voltage of an input signal by the voltage of the input signal. The low-pass filter couples to an output of the linear multiplier. The log converter generates a logarithmic signal having a voltage that is logarithmically related to a voltage of an output of the low-pass filter. The temperature compensator adjusts the logarithmic signal based on a temperature of the RMS detector. The RMS detector is capable of determine an RMS voltage level of the input signal.