Résumé
David P. Berry
*** ***** ****** ****** #*** E-Mail: ***********@*****.***
Manchester, NH 03102
TEL: 603, 703-5123
Summary:
I have had extensive experience in design, development, manufacturing and specification of signal processing components and systems.
Climax Communications Corporation November 1999 to present:
Product Manager:
Climax Comm designs, manufactures and sells a wide product line of lumped element signal processing components used in radio telecommunications and radar systems, both commercial and military over the frequency range from 10kHz to 6gHz.
Signal Processing Component Design
Complete design, development and manufacturing capability for all of the following:
Mixers, Single Sideband Modulators
Phase and amplitude matched Amplifiers
Bi-phase and Quadra-phase Modulators
Power dividers: in-phase, quadrature and 180 degree
Directional Couplers
Phase Shifters
Attenuators
Transformers
Bias Tees
Sub-systems – complete front ends, etc.
Almost all of the above listed products were specially optimized to customer specifications. Many standard and non-standard techniques were used to obtain very high performance products.
Micronetics Wireless, Hudson, NH
May 1999 to November 1999
Title: Director of Control Components Sales
Micronetics Wireless Inc.
26 Hampshire Drive
Hudson NH 03051
United States
http://www.micronetics.com/
TEL: 603-***-**** USA
Responsible for world wide sales of control components.
Micronetics designs, manufactures and sells microwave switches, attenuators, phase shifters, modulators and similar products.
Metropolitan Microwave Corporation, ( MMC ) formerly Penny Technologies
October 1996 to April 1998
Director of Sales and Marketing
Reported to Steven Candiloro, President (deceased)
Contact: David Epner @
Epner Technology, Inc.
78 Kingsland Ave, NY
718-***-**** www.epner.com
MMC designed, manufactured cavity filters and feed-forward networks for the cellular telephone industry. They are no longer in business.
Responsible for all sales. Also introduced a wide product line of lumped
element signal processing components, both military and commercial from 10KHZ to 6GHZ. Products: Power dividers, directional coupler, mixers, modulators, phase, shifters, attenuators, bias tees, transformers et cetera.
Triangle Microwave
April 1984 to April 1988
Product Line Manager
Designed, developed and manufactured a wide product line of lumped
element signal processing components, both military and commercial from 10KHZ to 6GHZ. Products: Power dividers, directional coupler, mixers, modulators, phase, shifters, attenuators, bias tees, transformers et cetera.
Triangle Microwave was sold to Engelman Microwave Division of KDI Corporation and then to Tyco Electronics.
Tyco Electronics
P. O. Box 3608
Harrisburg, PA 17105
TEL: 800, 522-6752
Anzac Division of Adams-Russell Corp.
May 1980 to Dec. 1983
International Sales Manager
Responsible for all company sales except for USA
Anzac designed, developed and manufactured an extensive line of signal processing components from 10mHz to 26 gHz.
Company was sold to M/A-COM
1011 Pawtucket Boulevard
Lowell, MA 01854
TEL: 978, 442-5000 USA
Education: RCA (Radio Corporation of America) Institutes, T-3 course in advanced electronics.
Languages: Spoken German and fundamental French. Extensive knowledge of European culture, customs and history. Lived in Canada, England, Holland, Germany and Italy.
Citizenship: Born Jersey City, NJ. USA
Clearance: Have had secret level clearances.
Frequency Conversion is our business:
Introduction:
The reason d’etre for Climax Communications Corporation is to produce a broad line of radio frequency down converters and up converters covering, at first, the frequency range from 10 mHz. to 8.0 gHz.
The first products offered will be a series of image reject down converters operating between 0.7 and 2.7 gHz. covering a substantial portion of the cellular sites used throughout the world.
Down Converter Goals
a. High Image Rejection
This will be achieved through the use of a combination of low noise amplifiers, filters, quadrature and in-phase couplers and other devices. Most of these components will be the best currently available products. A few will be the Re-invention of some very old and almost forgotten devices.
b. Half IF Response
Half-IF Spurious Frequency Location
The 2nd-order spurious response named half-IF (1/2 IF), which is defined for the mixer indices of (m = 2, n = -2) for low-side of local oscillator injection and (m = -2, n = 2) for high-side of local oscillator injection. In both cases, the input frequency that creates the half-IF spurious response is located directly in the receiver band of the receiver by F= fIF/2 from the desired RF input frequency. The desired RF frequency is represented by 2000 mHz, and LO frequency of 1800MHz, the resulting IF frequency is 200MHz. Therefore an undesired signal at 1900 mHz causes a half-IF spurious product at 200MHz RF.
The half-IF spurious response is pictured in Figure 1 as a high-side injection of an RF signal.
Figure 1.
Frequency Allocations:
fRF = 1900MHz
fLO = 1800MHz
fIF = 200MHz
Calculate fHalf-IF = fRF – fIF/2 = 1800
Check:
2 fHalf-IF – 2 fLO =
2 (fRF - fIF/2) - 2 (fRF - fIF) =
2 fRF – 2 fIF/2 - 2 fRF + 2 fIF = fIF
Results in:
2 2000MHz – 2 1900MHz = 200MHz
Technical Discussion
Symmetry, Simplicity and Balance are among the hallmarks of well designed systems. The system overall performance will be analyzed as will each component of the IMR-1 mixer system. Figure 2 is an outline of a typical image reject mixer schematic.
Image
Output
Real
Output
Figure 2 Typical Image Reject Mixer
Mixers
The mixers will be “Triple Balanced” but with a unique configuration and some additional elements that will enhance suppression of undesired spurs over specific frequency bands. The mixers have been designed to suppress the IF spurious signals.
Image Reject Down Convertors
IMR Specification
Freq. Range: 1700 to 2200 mHz.
Gain: 10 dB.
Noise Figure: 2.5 dB., max.
Third Order Incept Point: +36 dBm. min.
Image Rejection: 40 dB., min. 50 dB. typical
(1/2 IF) spurious response: -70 dBc., min. below IF power output.
Package Seize: 4 x 2 x 1 inches, approximately
Connectors: SMA-Female or glass to metal seal
Local Oscillator Input Power: +0 dBm., Typical.
Conclusion:
Successfully attaining the above listed goals will enhance the performance of all microwave systems that have a FREQUENCY DOWN CONVERTER module. This will, of course apply to all cellular radio systems, including the “NEW” 5 G equipment as well as radars, electronic counter-measure equipment etc.
Climax Communications Corporation is, at this time, seeking to enter into an arrangement with person(s) or companies that have an intellectual and/or financial interest pursuing the development of these types of products.
Cordially.
David P. Berry
Chief Inventor
Climax Communications Corporation
373 South Willow Street #241
Manchester, NH 03103
TEL: 603,703-5123 E-mail: ***********@****.***
RF
3 dB
90 degree
Hybrid
RF Input
IF
3 dB
90 degree
Hybrid
LO
In-Phase
Divider
RFI
RFQ
IFQ
IFI
R
R
L
L
I
I