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Hans Dropmann Phones & Addresses

  • Las Vegas, NV
  • San Carlos, CA
  • 658 Oak Park Way, Redwood City, CA 94062 (650) 298-9488
  • Emerald Hills, CA
  • Sunnyvale, CA
  • 233 Liberty St, San Francisco, CA 94101 (415) 642-6001
  • Portland, OR

Work

Position: Professional/Technical

Industries

Semiconductors

Professional Records

License Records

Hans Dropmann

Address:
658 Oak Park Way, Emerald Hills, CA 94062
License #:
A4086082
Category:
Airmen

Resumes

Resumes

Hans Dropmann Photo 1

Hans Dropmann

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Location:
San Francisco Bay Area
Industry:
Semiconductors

Publications

Us Patents

Harmonic Termination Of Power Amplifiers Using Baw Filter Output Matching Circuits

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US Patent:
7598827, Oct 6, 2009
Filed:
Oct 23, 2006
Appl. No.:
11/551946
Inventors:
Carlton Stuebing - Portland OR,
Garth G. Sundberg - Portland OR,
Walid Y. Ali-Ahmad - Cupertino CA,
Hans Dropmann - Emerald Hills CA,
Assignee:
Maxim Integrated Products - Sunnyvale CA
International Classification:
H03H 9/54
US Classification:
333189, 333187
Abstract:
A system, apparatus and method for providing filtering functionality and impedance transformation within a BAW resonator network are disclosed. In particular, a BAW resonator network is designed to provide bandpass capability and a transformation between its input impedance and output impedance. By effectively integrating impedance matching functionality within the BAW resonator network, discrete impedance matching elements previously required within a system may be removed or reduced in size. As a result, matching networks and their associated component costs, insertion losses, and board size contributions may be reduced. Harmonic termination may be provided within the BAW resonator network or a prematch stage to improve efficiency of a power amplifier.

Harmonic Termination Of Power Amplifiers Using Baw Filter Output Matching Circuits

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US Patent:
7728696, Jun 1, 2010
Filed:
Sep 23, 2008
Appl. No.:
12/236385
Inventors:
Carlton Stuebing - Portland OR,
Garth G. Sundberg - Portland OR,
Walid Y. Ali-Ahmad - Cupertino CA,
Hans Dropmann - Emerald Hills CA,
Assignee:
Maxim Integrated Products, Inc. - Sunnyvale CA
International Classification:
H03H 9/54
H03H 9/70
H03H 7/38
H03F 3/21
US Classification:
333189, 333133, 330302, 330306
Abstract:
A system, apparatus and method for providing filtering functionality and impedance transformation within a BAW resonator network are disclosed. In particular, a BAW resonator network is designed to provide bandpass capability and a transformation between its input impedance and output impedance. By effectively integrating impedance matching functionality within the BAW resonator network, discrete impedance matching elements previously required within a system may be removed or reduced in size. As a result, matching networks and their associated component costs, insertion losses, and board size contributions may be reduced. Harmonic termination may be provided within the BAW resonator network or a prematch stage to improve efficiency of a power amplifier.

Bonded Wafer Package Module

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US Patent:
7863699, Jan 4, 2011
Filed:
May 21, 2008
Appl. No.:
12/124925
Inventors:
Hans Dropmann - Emerald Hills CA,
Uppili Sridhar - Plano TX,
Carlton Stuebing - Portland OR,
Assignee:
TriQuint Semiconductor, Inc. - Hillsboro OR
International Classification:
G01R 33/09
US Classification:
257416, 257E25027, 257254, 257531, 257686, 257777, 333133, 333187, 333189, 333191, 438 50, 438 52
Abstract:
Bonded wafer packages having first and second wafers bonded together forming a matrix of sealed devices, at least one of the wafers having a plurality of passive devices formed thereon, including at least one BAW resonator within each of the sealed devices, the first wafer having conductor filled through-holes forming electrical connections between the passive devices and connections assessable from outside the sealed devices, the bonded wafers being diced to form individual sealed devices. The devices may be duplexers, interstage filters or other circuits such as VCOs and RF circuits. Various embodiments are disclosed.

Chip Set For Digital Audio Satellite Radio Receivers

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US Patent:
2005011, Jun 2, 2005
Filed:
Sep 3, 2004
Appl. No.:
10/933647
Inventors:
Serge Drogi - Phoenix AZ,
Mihai Murgulescu - San Jose CA,
Hans Dropmann - Emerald Hills CA,
International Classification:
H04B015/00
US Classification:
375316000
Abstract:
A digital audio radio system includes a radio frequency (RF) integrated circuit (IC) and a baseband digital signal processing (DSP) IC to receive digital audio radio signals from satellites and terrestrial antennae. A serial digital interface couples data between the RF IC and the baseband DSP IC to provide a high data rate and low noise. In one embodiment, the RF IC has a single bit sigma delta modulator to convert an analog signal into a serial digital bit stream, and a low voltage differential output driver to reduce the output voltage swing of the serial digital bit stream. The DSP IC has a low voltage differential input receiver to increase the output voltage swing of the serial digital bit stream in the DSP IC, a decimator to lower the data rate of the serial digital bit stream, and a demodulator to convert the serial digital bit stream into parallel digital data samples for digital signal processing by the DSP IC.

Method, Apparatus, And Systems For Digital Radio Communication Systems

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US Patent:
2005011, Jun 2, 2005
Filed:
Dec 2, 2003
Appl. No.:
10/727230
Inventors:
Serge Drogi - Phoenix AZ,
Hans Dropmann - Emerald Hills CA,
Vikas Vinayak - Mountain View CA,
International Classification:
H04B001/26
US Classification:
455323000
Abstract:
A radio system includes a radio frequency (RF) integrated circuit (IC) and a baseband digital signal processing (DSP) IC. A serial digital interface couples data between the RF IC and the DSP IC to provide a high data rate and low noise. In one embodiment, the RF IC has a single bit sigma delta modulator to convert an analog signal into a serial digital bit stream, and a differential output driver to drive the serial digital bit stream as a differential data signal. In one embodiment, the DSP IC has a differential input receiver to receive the differential data signal and generate the serial digital bit stream therein, a decimator to lower the data rate of the serial digital bit stream and convert it into parallel digital data samples, and a demodulator to digitally demodulate the parallel digital data samples into data words for digital signal processing.

Serial Digital Interface For Wireless Network Radios And Baseband Integrated Circuits

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US Patent:
2005011, Jun 2, 2005
Filed:
Nov 12, 2004
Appl. No.:
10/988362
Inventors:
Rishi Mohindra - Milpitas CA,
Serge Drogi - Phoenix AZ,
Hans Dropmann - Emerald Hills CA,
Vikas Vinayak - Mountain View CA,
International Classification:
H04B001/44
H04B001/40
H04M001/00
US Classification:
455552100, 455088000, 455078000, 455550100
Abstract:
A wireless radio for wireless networking communication systems includes a radio frequency (RF) transceiver integrated circuit (IC) and a baseband digital signal processing (DSP) IC. A bidirectional serial digital interface couples data between the RF transceiver IC and the DSP IC to provide a high data rate and low noise. The bidirectional serial digital interface includes a first serial data connection and a second serial data connection. In one embodiment, the RF transceiver IC has a single bit sigma delta A/D modulator to convert an analog signal into a first serial digital bit stream for communication over the first serial data connection. In one embodiment, the DSP IC has a single bit sigma delta digital modulator to generate a second serial digital bit stream for communication over the second serial data connection.

Radio Integrated Circuit With Integrated Power Amplifier

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US Patent:
2006012, Jun 15, 2006
Filed:
Feb 13, 2006
Appl. No.:
11/353639
Inventors:
Pramote Piriyapoksombut - Millbrae CA,
Gordon Olsen - Tigard OR,
Joel King - Sunnyvale CA,
Serge Drogi - Phoenix AZ,
Hans Dropmann - Emerald Hills CA,
Vikas Vinayak - Menlo Park CA,
International Classification:
H04B 1/28
US Classification:
455333000
Abstract:
A radio system includes a radio frequency (RF) integrated circuit (IC), a baseband digital signal processing (DSP) IC, and a serial digital interface coupling data there-between. In one embodiment of the invention, the RF IC has an input receiver to receive a serial digital transmission bit stream from a digital signal processing integrated circuit; a data recoverer coupled to the input receiver to recover digital data bits from the serial digital transmission bit stream; a low pass filter coupled to the data recoverer convert the digital data bits into an analog transmission signal; a mixer coupled to the low pass filter to up-convert the analog transmission signal from a baseband frequency to a second selectable carrier frequency as a transmit radio frequency signal; and an amplifier coupled to the mixer and an antenna, the amplifier to amplify the transmit radio frequency signal for broadcast over the antenna.

Impedance Transformation And Filter Using Bulk Acoustic Wave Technology

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US Patent:
2007029, Dec 20, 2007
Filed:
Jun 19, 2006
Appl. No.:
11/471031
Inventors:
Walid Y. Ali-Ahmad - Cupertino CA,
Hans Dropmann - Emerald Hills CA,
Carlton Stuebing - Portland OR,
International Classification:
H03H 9/70
H03H 9/58
US Classification:
333133, 333189
Abstract:
A system, apparatus and method for providing filtering functionality and impedance transformation within a BAW resonator network are disclosed. In particular, a BAW resonator network is designed to provide band pass capability and a transformation between its input impedance and output impedance. By effectively integrating impedance matching functionality within the BAW resonator network, discrete impedance matching elements previously required within a system may be removed or reduced in size. As a result, matching networks and their associated component costs, insertion losses, and board size contributions may be reduced.
Hans Dropmann from Las Vegas, NV, age ~56 Get Report