Communications: radio wave antennas – Antennas – With polarization filter or converter
Reexamination Certificate
2007-07-07
2011-12-13
Duong, Dieu H (Department: 2821)
Communications: radio wave antennas
Antennas
With polarization filter or converter
C343S786000, C333S02100R
Reexamination Certificate
active
08077103
ABSTRACT:
A cup waveguide antenna with integrated polarizer and OMT for simultaneously communicating left and right hand circularly polarized electromagnetic waves is adjustable to obtain efficient propagation and reception of electromagnetic waves. The antenna includes a circular waveguide having an orthomode transducer utilizing first and second pins longitudinally spaced apart and oriented orthogonally with respect to each other. Six radially-oriented adjustable polarizer screws extend from the exterior to the interior of the waveguide. A septum intermediate the first and second pins is aligned with the first pin. Adjustment of the polarizer screws enables maximized propagation of and/or response to left hand circularly polarized electromagnetic waves by the first pin while simultaneously enabling maximized propagation of and/or response to right hand circularly polarized electromagnetic waves by the second pin.
REFERENCES:
patent: 3438043 (1969-04-01), Ehrenspeck
patent: 3508278 (1970-04-01), Ehrenspeck
patent: 3731236 (1973-05-01), Di Tullio et al.
patent: 4005433 (1977-01-01), Tsuda
patent: 4126835 (1978-11-01), Gould
patent: 4183027 (1980-01-01), Ehrenspeck
patent: 4240080 (1980-12-01), Woodward
patent: 4673945 (1987-06-01), Syrigos
patent: 4897664 (1990-01-01), Killackey et al.
patent: 5212461 (1993-05-01), Aicardi et al.
patent: 5243357 (1993-09-01), Koike et al.
patent: 5461394 (1995-10-01), Weber
patent: 5576668 (1996-11-01), Clark et al.
patent: 5619216 (1997-04-01), Park
patent: 5973652 (1999-10-01), Sanford et al.
patent: 6087908 (2000-07-01), Haller et al.
patent: 6130649 (2000-10-01), Wojtkowiak et al.
patent: 6384796 (2002-05-01), Reimann et al.
patent: 6452561 (2002-09-01), West et al.
patent: 6507323 (2003-01-01), West
patent: 6603438 (2003-08-01), Strickland
patent: 6661309 (2003-12-01), Chen et al.
patent: 6727845 (2004-04-01), Burger
patent: 6987360 (2006-01-01), Caplan et al.
patent: 7002528 (2006-02-01), Moheb
patent: 7068129 (2006-06-01), Higgins et al.
patent: 7277061 (2007-10-01), Fusco et al.
patent: 2001/0003442 (2001-06-01), Smith
patent: 2004/0021614 (2004-02-01), Moheb
patent: 2005/0046511 (2005-03-01), Stenberg
patent: 2006/0017641 (2006-01-01), Yoneda et al.
patent: 2006/0132359 (2006-06-01), Chang et al.
Ahmed, Z. A., Physics: Short Backfire Antenna With Conical Back Reflector and Double Small Front Reflectors pp. 49-52, Journal of Islamic Academy of Sciences 0:2, 49-52, 1996, http://www.medicaljournal-ias.org/9—2/Ahmed.pdf.
Cushcraft Corporation, Antenna Polarization Considerations in Wireless Communications Systems, pp. 1-7, 1999-2002, http://www.cushcraft.com/comm/support/pdf/Antenna-Polarization-14B32.pdf.
Antenna Basics, pp. 63-77, http://wireless.ictp.trieste.it/handbook/C4.pdf, 15 Pages.
Flomerics, Wide-Band Short Backfire Antenna, 3 Pages, http://www.flomerics.com/unicrostripes/applications/backfire—antenna/.
Wade, Paul, W1GHZ Microwave Antenna Book, Chapter 7 Slot Antennas, 14 Pages, 2000, 2001, http://www.w1ghz.org.
Chapter 2, Antenna Fundamentals pp. 9-30.
Chen, C., Matrix Model of the Waveguide Transformer, pp. 1-24, http://www.Ins.cornell.eduipublic/SRF/2001/SRF010219-02/srf010219-02.pdf.
Subbarao, B., Fusco, V. F., Single Aperture Monopulse Horn Antenna, IEEE, pp. 1-3.
Polarization pp. 3-2.1-3-2.4, http://www.phys.hawaii.edu/˜anita/web/paperwork/currently%20organizing/Military%20EW%20%20handbook%20excerpt/polariza.pdf.
Subbarao, B. and Fusco, V.F., Compact Coaxial-Fed CP Polarizer, IEEE Antennas and Wireless Propagation Letters, vol. 3, 2004 pp. 145-147.
Taqi, A.H., Al-Rashid R.A., Jassim A.M., Physics: An Experimental Investigation of a Short Backfire Antenna With Electromagnetic Coupled Patch as Feed Element, Journal of Islamic Academy of Sciences 8:2, 61-68, 1995.
Tracking and Data Relay Satellite (TDRS) Space Segment Overview, Section I: p. 4.
Paynter, G.F., Lee, Teh-Hong, Burnside, W.D., EM Programmer'S Notebook, Expansion of Existing EM Workbench for Multiple Computational Electromagnetics Codes, IEEE Antennas and Propagation Magazine, vol. 45, No. 3, Jun. 2003 pp. 122-127.
Krejcik, P., Waveguide Stub-Line Tuning of RF Cavities With Heavy Beam Loading, Slac-Pub-7544, May 1997, Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309, Contributed to 1997 Particle Accelerator Conference, Vancouver Canada, May 12-16, 1997. 4 Pages, http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-7544.pdf IEEE 1998 pp. 3030-3032.
Wade, Paul, Feeds for Parabolic Dish Antennas, W1GHZ Microwave Antenna Book, Chapter 6, 1998, 1999, Appendix 6A-Parabolic Dish Gain and Beamwidth 3 Pages, http://www.w1ghz.org/antbook/app-6a.pdf.
http://www.rfcafe.com/references/electrical/circular—waveguide—modes.html, Jun. 28, 2007.
John, Sarah, Electromagnetic Unification of Matter and Force Fields (Excerpts from a Talk Presented at the APS Meeting in Denver, Colorado, May 1, 2004) http://flux.aps.org/meetings/ YR04/APR04/baps/abs/G300015.htm1 6 pages.
Wade, Paul, W1GHZ Microwave Antenna Book, Chapter 6, Feeds for Parabolic Dish Antennas, 1994, 1997, 1998, 1999, 23 Pages.
Airstream Community Wireless Network, Antenna Polarization, http://www.air-stream.org.au/polarization, 3 Pages.
Globalspec.com, About RF Waveguide Components, 2 Pages, http://communication-equipment. globalspec.com/LearnMore/Networking—Communication . . . .
IEEE, Ieeexplore Search, 5 Pages, http://ieeexplore.ieee.org/search/freesearchresult.jsp?history=yes&gueryText=%28kory%29.
Radiolabs Inc., Radiolabs Wireless & Beyond, Backfire 2.4 Ghz Wifi Antenna, http://www.radiolabs.com/products/antennas/2.4gig/backfire.php 2 Pages.
Extremetech.com, Building a Wi-Fi Antenna Out of a Tin Can, 4 Pages, http://www.extremetech.com/article2/0,1558,1641186,00.asp.
Dod, L.R., Experimental Measurements of the Short Backfire Antenna, Oct. 1966, Goddard Space Flight Center, 43 Pages, http:/
trs.nasa.gov/archive
asa/casi.ntrs.nasa.gov/19670009367—1967009367.pdf.
Okhmatovsky, Vladimir I., Nikita, Konstantina S., Koulouridis, Stavros, and Uzunoglu, Nikolaos K., Development of a Cylindrical Waveguide Antenna Array With a High Isolation Between Receive-Transmit Sub Arrays: Theory and Experiment, Turk J Elec Engin, vol. 10, No. 2, 2002 Tubitak pp. 307-316, http://journals.tubitak.gov.tr/elekrik/issues/elk-02-10-2/elk-10-2-13-0110-16.pdf.
Seybold, Dr. John S., Antennas, Presentation Slides, Nov. 9, 2004, IEEE Melbourne Com/SP AP/MTT Chapters, Slides 1-29, 15 Pages.
Google, Google Search for Marcuvitz Waveguide Handbook, http://www.google.com/search?sourceid=navclient&ag=t&ie=UTF-8&rls=HPIA, HPIA:20 . . . , Two Pages.
Wikipedia, Low-Noise Block Converter, http://en.wikipedia.org/wiki/Low-noise—block—converter, 4 Pages.
Wikipedia, Circular Polarization, http://en.wikipedia.org/wiki/Circular—polarization, 3 Pages.
Rabe, Carl, “My Short Backfire Antenna for 2.45GHz by Carl Rabe-G6NLC”, http://www.frars.org.uk/cgi-bin/renderpl?pageid=1076, http://oasis.dit.upm.es/˜jantonio/personal/eb4gpe/short—backfire.html, 9 Pages.
Hyperlink Technologies, Inc., 2.4 GHz 14 dBi Backfire Wireless Lan Antenna, Model: HG2414D, Two pages, http://www.hyperlinktech.com.
Wong, Gary G., Tamakawa, Thomas T., TDRSS Multiple Access Transmit Phased Array, Report No. 2900-330-013, TRW, 87 Pages.
Wikipedia, Short Backfire Antenna, One page http://en.wikipedia.org/wiki/Short—backfire—antenna.
Wikipedia, Antenna (Radio), 20 pages, http://en.wikipedia.org/wiki/Antenna—%28electronics%29.
Wikipedia,Orthomode Transducer, 1 Page, http://en.wikipedia.org/wiki/Orthomode—transducer.
Wikipedia, Waveguide, 2 Pages, http://en.wikipedia.org/wiki/waveguide.
Wikipedia, Waveguide (Electromagnetism), 5 Pages, http://en.wikipedia.org/wiki/waveguide—%28electromagnetism%29.
Techtarget, Waveguide, 3 Pages, http://whatis.techtarget.com/definition/0,,sid9—gci214326,00.html.
Wade, Paul, Understanding Circular Waveguide-Experimentally, Old-Fashioned Microwave Engineering, W1GHZ, QEX, Jan./Feb. 2001, pp. 37
Acosta Roberto J.
Kory Carol
Lambert Kevin M.
Duong Dieu H
Earp III Robert H.
The United States of America as represented by the Administrator
Woodling Krost & Rust
LandOfFree
Cup waveguide antenna with integrated polarizer and OMT does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cup waveguide antenna with integrated polarizer and OMT, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cup waveguide antenna with integrated polarizer and OMT will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4312519