A portion of the disclosure of this patent document contains material which is subject to copyright or mask work protection. The copyright or mask work owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright or mask work rights whatsoever.
This application is related to and claims priority from the following U.S. patent applications, the entire contents of each of which are incorporated herein by reference:
The present invention is related to the following co-pending U.S. patent applications which are all commonly owned with the present application, the entire contents of each of which are incorporated herein by reference:
This relates to ultra-small devices, and, more particularly, to ultra-small antennas.
Antennas are used for detecting electromagnetic radiation (EMR) of a particular frequency.
As is well known, frequency (f) of a wave has an inverse relationship to wavelength (generally denoted λ). The wavelength is equal to the speed of the wave type divided by the frequency of the wave. When dealing with electromagnetic radiation (EMR) in a vacuum, this speed is the speed of light c in a vacuum. The relationship between the wavelength λ of an electromagnetic wave its frequency f is given by the equation:
As shown in
Note that when a electromagnetic wave (W) with wavelength λm is incident on the antenna 10, this causes a standing wave (denoted by the dashed line in the drawing) to be formed in the antenna. The standing wave is reflected of the end of the antenna, to form a second standing wave (denoted by the dotted line in the drawing). The wavelength of the standing wave is ½ λm.
When an electromagnetic wave travels through a dielectric, the velocity of the wave will be reduced and it will effectively behave as if it had a shorter wavelength. Generally, when an electromagnetic wave enters a medium, its wavelength is reduced (by a factor equal to the refractive index n of the medium) but the frequency of the wave is unchanged. The wavelength of the wave in the medium, λ′ is given by:
where λ0 is the vacuum wavelength of the wave. Note that the antenna 10 shown in
It is desirable to have more selectivity/sensitivity to specific frequencies in antenna detectors.
The following description, given with respect to the attached drawings, may be better understood with reference to the non-limiting examples of the drawings, wherein:
a)-2(b) are side views of an antenna with an integrated filter;
a)-5(d) show an exemplary process for making an antenna structure.
a), 2(b) and 3 show two side views and a top view, respectively, of an antenna 100 formed within a dielectric structure 102. The dielectric 102 may be formed on a substrate 104. A detector system 106 is coupled with the antenna. The detector system may comprise an emitter 108 (a source of charged particles) and a detector 110 (not shown in
Preferably the detector system 106 is disposed at end E2 of the antenna system.
Although shown as rectangular, the end E2 of the antenna may be pointed to intensify the field.
A shield structure 112 (not shown in
An optional reflective surface 114 may be formed on the substrate 104 to reflect EMR to a receiving end E1 of the antenna 100.
The entire antenna structure, including the detection system, should preferably be provided within a vacuum.
For the purposes of this description, the antenna has three logical portions, namely a first antenna portion (shown in the drawing to the left of the dielectric structure 102), a second antenna portion within the dielectric structure, and a third antenna portion (shown in the drawing to the right of the dielectric structure).
The antenna 100 is formed to detect electromagnetic waves having a certain frequency f, with corresponding wavelength (λ). Accordingly, the length of the first antenna portion, L1 and that of the third antenna portion L2 are both ¼ λ. The length Ld of the second antenna portion, the portion within the dielectric, is ¼ λd, where λd is the wavelength of the signal within the dielectric 102. The antenna 100 is formed at a height H of ¼ λ above the substrate 104.
Recall that when an electromagnetic wave travels through a dielectric, its wavelength is reduced but the frequency of the wave is unchanged. The dielectric structure thus acts as a filter for a received signal, allowing EMR of the appropriate wavelength to pass therethrough.
where lv is the length of the metal portion (corresponding to λv, the wavelength of the wave in a vacuum), and ld is the length of the dielectric portion (corresponding to λd is the wavelength of the wave in the dielectric material); ed is the dielectric constant of the dielectric material and em is the dielectric constant of the metal. Those skilled in the art will understand that lv/ld=λv/λd).
From this equation, the value of ld can be determined as:
The dielectric layer acts as a support for the antenna, and a filter.
The antenna structures may be formed of a metal such as silver (Ag).
With reference to
First, the dielectric (D1) is formed on the substrate, along with two sacrificial portions (S1, S2) (
As shown in the drawings, the antenna comprises three portions, namely metal, dielectric, metal. Those skilled in the art will realize, upon reading this description, that the antenna may comprise three metal portions (e.g., in the order metalA, metalB, metalA, where metalA and metalB different metals, e.g., silver and gold). Those skilled in the art will realize, upon reading this description, that the antenna may comprise three dielectric portions (e.g., in the order Da, Db, Da, where Da and Db are different dielectric materials).
While certain configurations of structures have been illustrated for the purposes of presenting the basic structures of the present invention, one of ordinary skill in the art will appreciate that other variations are possible which would still fall within the scope of the appended claims. While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Number | Name | Date | Kind |
---|---|---|---|
1948384 | Lawrence | Feb 1934 | A |
2307086 | Varian et al. | Jan 1943 | A |
2431396 | Hansell | Nov 1947 | A |
2473477 | Smith | Jun 1949 | A |
2634372 | Salisbury | Apr 1953 | A |
2932798 | Kerst et al. | Apr 1960 | A |
2944183 | Drexler | Jul 1960 | A |
2966611 | Sandstrom | Dec 1960 | A |
3231779 | White | Jan 1966 | A |
3297905 | Rockwell et al. | Jan 1967 | A |
3315117 | Udelson | Apr 1967 | A |
3387169 | Farney | Jun 1968 | A |
3543147 | Kovarik | Nov 1970 | A |
3546524 | Stark | Dec 1970 | A |
3560694 | White | Feb 1971 | A |
3571642 | Westcott | Mar 1971 | A |
3586899 | Fleisher | Jun 1971 | A |
3761828 | Pollard et al. | Sep 1973 | A |
3886399 | Symons | May 1975 | A |
3923568 | Bersin | Dec 1975 | A |
3989347 | Eschler | Nov 1976 | A |
4053845 | Gould | Oct 1977 | A |
4282436 | Kapetanakos | Aug 1981 | A |
4450554 | Steensma et al. | May 1984 | A |
4453108 | Freeman, Jr. | Jun 1984 | A |
4482779 | Anderson | Nov 1984 | A |
4528659 | Jones, Jr. | Jul 1985 | A |
4589107 | Middleton et al. | May 1986 | A |
4598397 | Nelson et al. | Jul 1986 | A |
4630262 | Callens et al. | Dec 1986 | A |
4652703 | Lu et al. | Mar 1987 | A |
4661783 | Gover et al. | Apr 1987 | A |
4704583 | Gould | Nov 1987 | A |
4712042 | Hamm | Dec 1987 | A |
4713581 | Haimson | Dec 1987 | A |
4727550 | Chang et al. | Feb 1988 | A |
4740963 | Eckley | Apr 1988 | A |
4740973 | Madey | Apr 1988 | A |
4746201 | Gould | May 1988 | A |
4761059 | Yeh et al. | Aug 1988 | A |
4782485 | Gollub | Nov 1988 | A |
4789945 | Niijima | Dec 1988 | A |
4806859 | Hetrick | Feb 1989 | A |
4809271 | Kondo et al. | Feb 1989 | A |
4813040 | Futato | Mar 1989 | A |
4819228 | Baran et al. | Apr 1989 | A |
4829527 | Wortman et al. | May 1989 | A |
4838021 | Beattie | Jun 1989 | A |
4841538 | Yanabu et al. | Jun 1989 | A |
4864131 | Rich et al. | Sep 1989 | A |
4866704 | Bergman | Sep 1989 | A |
4866732 | Carey et al. | Sep 1989 | A |
4873715 | Shibata | Oct 1989 | A |
4887265 | Felix | Dec 1989 | A |
4890282 | Lambert et al. | Dec 1989 | A |
4898022 | Yumoto et al. | Feb 1990 | A |
4912705 | Paneth et al. | Mar 1990 | A |
4932022 | Keeney et al. | Jun 1990 | A |
4981371 | Gurak et al. | Jan 1991 | A |
5023563 | Harvey et al. | Jun 1991 | A |
5036513 | Greenblatt | Jul 1991 | A |
5065425 | Lecomte et al. | Nov 1991 | A |
5113141 | Swenson | May 1992 | A |
5121385 | Tominaga et al. | Jun 1992 | A |
5127001 | Steagall et al. | Jun 1992 | A |
5128729 | Alonas et al. | Jul 1992 | A |
5130985 | Kondo et al. | Jul 1992 | A |
5150410 | Bertrand | Sep 1992 | A |
5155726 | Spinney et al. | Oct 1992 | A |
5157000 | Elkind et al. | Oct 1992 | A |
5163118 | Lorenzo et al. | Nov 1992 | A |
5185073 | Bindra | Feb 1993 | A |
5187591 | Guy et al. | Feb 1993 | A |
5199918 | Kumar | Apr 1993 | A |
5214650 | Renner et al. | May 1993 | A |
5233623 | Chang | Aug 1993 | A |
5235248 | Clark et al. | Aug 1993 | A |
5262656 | Blondeau et al. | Nov 1993 | A |
5263043 | Walsh | Nov 1993 | A |
5268693 | Walsh | Dec 1993 | A |
5268788 | Fox et al. | Dec 1993 | A |
5282197 | Kreitzer | Jan 1994 | A |
5283819 | Glick et al. | Feb 1994 | A |
5293175 | Hemmie et al. | Mar 1994 | A |
5302240 | Hori et al. | Apr 1994 | A |
5305312 | Fornek et al. | Apr 1994 | A |
5341374 | Lewen et al. | Aug 1994 | A |
5354709 | Lorenzo et al. | Oct 1994 | A |
5446814 | Kuo et al. | Aug 1995 | A |
5504341 | Glavish | Apr 1996 | A |
5578909 | Billen | Nov 1996 | A |
5604352 | Schuetz | Feb 1997 | A |
5608263 | Drayton et al. | Mar 1997 | A |
5663971 | Carlsten | Sep 1997 | A |
5666020 | Takemura | Sep 1997 | A |
5668368 | Sakai et al. | Sep 1997 | A |
5705443 | Stauf et al. | Jan 1998 | A |
5737458 | Wojnarowski et al. | Apr 1998 | A |
5744919 | Mishin et al. | Apr 1998 | A |
5757009 | Walstrom | May 1998 | A |
5767013 | Park | Jun 1998 | A |
5780970 | Singh et al. | Jul 1998 | A |
5790585 | Walsh | Aug 1998 | A |
5811943 | Mishin et al. | Sep 1998 | A |
5821836 | Katehi et al. | Oct 1998 | A |
5821902 | Keen | Oct 1998 | A |
5825140 | Fujisawa | Oct 1998 | A |
5831270 | Nakasuji | Nov 1998 | A |
5847745 | Shimizu et al. | Dec 1998 | A |
5889449 | Fiedziuszko | Mar 1999 | A |
5889797 | Nguyen | Mar 1999 | A |
5902489 | Yasuda et al. | May 1999 | A |
5963857 | Greywall | Oct 1999 | A |
5972193 | Chou et al. | Oct 1999 | A |
6005347 | Lee | Dec 1999 | A |
6008496 | Winefordner et al. | Dec 1999 | A |
6040625 | Ip | Mar 2000 | A |
6060833 | Velazco | May 2000 | A |
6080529 | Ye et al. | Jun 2000 | A |
6117784 | Uzoh | Sep 2000 | A |
6139760 | Shim et al. | Oct 2000 | A |
6180415 | Schultz et al. | Jan 2001 | B1 |
6195199 | Yamada | Feb 2001 | B1 |
6222866 | Seko | Apr 2001 | B1 |
6278239 | Caporaso et al. | Aug 2001 | B1 |
6281769 | Fiedziuszko | Aug 2001 | B1 |
6297511 | Syllaios et al. | Oct 2001 | B1 |
6301041 | Yamada | Oct 2001 | B1 |
6309528 | Taylor et al. | Oct 2001 | B1 |
6316876 | Tanabe | Nov 2001 | B1 |
6338968 | Hefti | Jan 2002 | B1 |
6370306 | Sato et al. | Apr 2002 | B1 |
6373194 | Small | Apr 2002 | B1 |
6376258 | Hefti | Apr 2002 | B2 |
6407516 | Victor | Jun 2002 | B1 |
6441298 | Thio | Aug 2002 | B1 |
6448850 | Yamada | Sep 2002 | B1 |
6453087 | Frish et al. | Sep 2002 | B2 |
6470198 | Kintaka et al. | Oct 2002 | B1 |
6504303 | Small | Jan 2003 | B2 |
6525477 | Small | Feb 2003 | B2 |
6534766 | Abe et al. | Mar 2003 | B2 |
6545425 | Victor | Apr 2003 | B2 |
6552320 | Pan | Apr 2003 | B1 |
6577040 | Nguyen | Jun 2003 | B2 |
6580075 | Kametani et al. | Jun 2003 | B2 |
6603781 | Stinson et al. | Aug 2003 | B1 |
6603915 | Glebov et al. | Aug 2003 | B2 |
6624916 | Green et al. | Sep 2003 | B1 |
6636185 | Spitzer et al. | Oct 2003 | B1 |
6636534 | Madey et al. | Oct 2003 | B2 |
6636653 | Miracky et al. | Oct 2003 | B2 |
6640023 | Miller et al. | Oct 2003 | B2 |
6642907 | Hamada et al. | Nov 2003 | B2 |
6687034 | Wine et al. | Feb 2004 | B2 |
6700748 | Cowles et al. | Mar 2004 | B1 |
6724486 | Shull et al. | Apr 2004 | B1 |
6738176 | Rabinowitz et al. | May 2004 | B2 |
6741781 | Furuyama | May 2004 | B2 |
6777244 | Pepper et al. | Aug 2004 | B2 |
6782205 | Trisnadi et al. | Aug 2004 | B2 |
6791438 | Takahashi et al. | Sep 2004 | B2 |
6800877 | Victor et al. | Oct 2004 | B2 |
6801002 | Victor et al. | Oct 2004 | B2 |
6819432 | Pepper et al. | Nov 2004 | B2 |
6829286 | Guilfoyle et al. | Dec 2004 | B1 |
6834152 | Gunn et al. | Dec 2004 | B2 |
6870438 | Shino et al. | Mar 2005 | B1 |
6871025 | Maleki et al. | Mar 2005 | B2 |
6885262 | Nishimura et al. | Apr 2005 | B2 |
6900447 | Gerlach et al. | May 2005 | B2 |
6909092 | Nagahama | Jun 2005 | B2 |
6909104 | Koops | Jun 2005 | B1 |
6924920 | Zhilkov | Aug 2005 | B2 |
6936981 | Gesley | Aug 2005 | B2 |
6943650 | Ramprasad et al. | Sep 2005 | B2 |
6944369 | Deliwala | Sep 2005 | B2 |
6952492 | Tanaka et al. | Oct 2005 | B2 |
6953291 | Liu | Oct 2005 | B2 |
6954515 | Bjorkholm et al. | Oct 2005 | B2 |
6965284 | Maekawa et al. | Nov 2005 | B2 |
6965625 | Mross et al. | Nov 2005 | B2 |
6972439 | Kim et al. | Dec 2005 | B1 |
6995406 | Tojo et al. | Feb 2006 | B2 |
7010183 | Estes et al. | Mar 2006 | B2 |
7064500 | Victor et al. | Jun 2006 | B2 |
7068948 | Wei et al. | Jun 2006 | B2 |
7092588 | Kondo | Aug 2006 | B2 |
7092603 | Glebov et al. | Aug 2006 | B2 |
7122978 | Nakanishi et al. | Oct 2006 | B2 |
7130102 | Rabinowitz | Oct 2006 | B2 |
7177515 | Estes et al. | Feb 2007 | B2 |
7194798 | Bonhote et al. | Mar 2007 | B2 |
7230201 | Miley et al. | Jun 2007 | B1 |
7253426 | Gorrell et al. | Aug 2007 | B2 |
7267459 | Matheson | Sep 2007 | B2 |
7267461 | Kan et al. | Sep 2007 | B2 |
7309953 | Tiberi et al. | Dec 2007 | B2 |
7342441 | Gorrell et al. | Mar 2008 | B2 |
7362972 | Yavor et al. | Apr 2008 | B2 |
7375631 | Moskowitz et al. | May 2008 | B2 |
7436177 | Gorrell et al. | Oct 2008 | B2 |
7442940 | Gorrell et al. | Oct 2008 | B2 |
7443358 | Gorrell et al. | Oct 2008 | B2 |
7470920 | Gorrell et al. | Dec 2008 | B2 |
7473917 | Singh | Jan 2009 | B2 |
7586097 | Gorrell et al. | Sep 2009 | B2 |
7586167 | Gorrell et al. | Sep 2009 | B2 |
20010002315 | Schultz et al. | May 2001 | A1 |
20010025925 | Abe et al. | Oct 2001 | A1 |
20020009723 | Hefti | Jan 2002 | A1 |
20020027481 | Fiedziuszko | Mar 2002 | A1 |
20020036121 | Ball et al. | Mar 2002 | A1 |
20020036264 | Nakasuji et al. | Mar 2002 | A1 |
20020053638 | Winkler et al. | May 2002 | A1 |
20020068018 | Pepper et al. | Jun 2002 | A1 |
20020070671 | Small | Jun 2002 | A1 |
20020071457 | Hogan | Jun 2002 | A1 |
20020122531 | Whitham | Sep 2002 | A1 |
20020135665 | Gardner | Sep 2002 | A1 |
20020139961 | Kinoshita et al. | Oct 2002 | A1 |
20020158295 | Armgarth et al. | Oct 2002 | A1 |
20020191650 | Madey et al. | Dec 2002 | A1 |
20030010979 | Pardo et al. | Jan 2003 | A1 |
20030012925 | Gorrell | Jan 2003 | A1 |
20030016421 | Small | Jan 2003 | A1 |
20030034535 | Barenburu et al. | Feb 2003 | A1 |
20030103150 | Catrysse et al. | Jun 2003 | A1 |
20030106998 | Colbert et al. | Jun 2003 | A1 |
20030155521 | Feuerbaum | Aug 2003 | A1 |
20030158474 | Scherer et al. | Aug 2003 | A1 |
20030164947 | Vaupel | Sep 2003 | A1 |
20030179974 | Estes et al. | Sep 2003 | A1 |
20030206708 | Estes et al. | Nov 2003 | A1 |
20030214695 | Abramson et al. | Nov 2003 | A1 |
20040061053 | Taniguchi et al. | Apr 2004 | A1 |
20040080285 | Victor et al. | Apr 2004 | A1 |
20040085159 | Kubena et al. | May 2004 | A1 |
20040092104 | Gunn, III et al. | May 2004 | A1 |
20040108471 | Luo et al. | Jun 2004 | A1 |
20040108473 | Melnychuk et al. | Jun 2004 | A1 |
20040108823 | Amaldi et al. | Jun 2004 | A1 |
20040136715 | Kondo | Jul 2004 | A1 |
20040150991 | Ouderkirk et al. | Aug 2004 | A1 |
20040171272 | Jin et al. | Sep 2004 | A1 |
20040180244 | Tour et al. | Sep 2004 | A1 |
20040184270 | Halter | Sep 2004 | A1 |
20040213375 | Bjorkholm et al. | Oct 2004 | A1 |
20040217297 | Moses et al. | Nov 2004 | A1 |
20040218651 | Iwasaki et al. | Nov 2004 | A1 |
20040231996 | Webb | Nov 2004 | A1 |
20040240035 | Zhilkov | Dec 2004 | A1 |
20040264867 | Kondo | Dec 2004 | A1 |
20050023145 | Cohen et al. | Feb 2005 | A1 |
20050045821 | Noji et al. | Mar 2005 | A1 |
20050045832 | Kelly et al. | Mar 2005 | A1 |
20050054151 | Lowther et al. | Mar 2005 | A1 |
20050067286 | Ahn et al. | Mar 2005 | A1 |
20050082469 | Carlo | Apr 2005 | A1 |
20050092929 | Schneiker | May 2005 | A1 |
20050104684 | Wojcik | May 2005 | A1 |
20050105690 | Pau et al. | May 2005 | A1 |
20050145882 | Taylor et al. | Jul 2005 | A1 |
20050152635 | Paddon et al. | Jul 2005 | A1 |
20050162104 | Victor et al. | Jul 2005 | A1 |
20050190637 | Ichimura et al. | Sep 2005 | A1 |
20050194258 | Cohen et al. | Sep 2005 | A1 |
20050201707 | Glebov et al. | Sep 2005 | A1 |
20050201717 | Matsumura et al. | Sep 2005 | A1 |
20050212503 | Deibele | Sep 2005 | A1 |
20050231138 | Nakanishi et al. | Oct 2005 | A1 |
20050249451 | Baehr-Jones et al. | Nov 2005 | A1 |
20050285541 | LeChevalier | Dec 2005 | A1 |
20060007730 | Nakamura et al. | Jan 2006 | A1 |
20060018619 | Helffrich et al. | Jan 2006 | A1 |
20060035173 | Davidson et al. | Feb 2006 | A1 |
20060045418 | Cho et al. | Mar 2006 | A1 |
20060050269 | Brownell | Mar 2006 | A1 |
20060060782 | Khursheed | Mar 2006 | A1 |
20060062258 | Brau et al. | Mar 2006 | A1 |
20060131176 | Hsu | Jun 2006 | A1 |
20060131695 | Kuekes et al. | Jun 2006 | A1 |
20060159131 | Liu et al. | Jul 2006 | A1 |
20060164496 | Tokutake et al. | Jul 2006 | A1 |
20060187794 | Harvey et al. | Aug 2006 | A1 |
20060208667 | Lys et al. | Sep 2006 | A1 |
20060216940 | Gorrell et al. | Sep 2006 | A1 |
20060243925 | Barker et al. | Nov 2006 | A1 |
20060274922 | Ragsdale | Dec 2006 | A1 |
20070003781 | de Rochemont | Jan 2007 | A1 |
20070013765 | Hudson et al. | Jan 2007 | A1 |
20070075263 | Gorrell et al. | Apr 2007 | A1 |
20070075264 | Gorrell et al. | Apr 2007 | A1 |
20070085039 | Gorrell et al. | Apr 2007 | A1 |
20070086915 | LeBoeuf et al. | Apr 2007 | A1 |
20070116420 | Estes et al. | May 2007 | A1 |
20070146704 | Schmidt et al. | Jun 2007 | A1 |
20070152176 | Gorrell et al. | Jul 2007 | A1 |
20070154846 | Gorrell et al. | Jul 2007 | A1 |
20070194357 | Oohashi et al. | Aug 2007 | A1 |
20070200940 | Gruhlke et al. | Aug 2007 | A1 |
20070238037 | Wuister et al. | Oct 2007 | A1 |
20070252983 | Tong et al. | Nov 2007 | A1 |
20070258492 | Gorrell | Nov 2007 | A1 |
20070258689 | Gorrell et al. | Nov 2007 | A1 |
20070258690 | Gorrell et al. | Nov 2007 | A1 |
20070259641 | Gorrell | Nov 2007 | A1 |
20070264023 | Gorrell et al. | Nov 2007 | A1 |
20070264030 | Gorrell et al. | Nov 2007 | A1 |
20070282030 | Anderson et al. | Dec 2007 | A1 |
20070284527 | Zani et al. | Dec 2007 | A1 |
20080069509 | Gorrell et al. | Mar 2008 | A1 |
20080302963 | Nakasuji et al. | Dec 2008 | A1 |
Number | Date | Country |
---|---|---|
0237559 | Dec 1991 | EP |
2004-32323 | Jan 2004 | JP |
WO 8701873 | Mar 1987 | WO |
WO 9321663 | Oct 1993 | WO |
WO 0072413 | Nov 2000 | WO |
WO 0225785 | Mar 2002 | WO |
WO 02077607 | Oct 2002 | WO |
WO 2004086560 | Oct 2004 | WO |
WO 2005015143 | Feb 2005 | WO |
WO 2005098966 | Oct 2005 | WO |
WO 2006042239 | Apr 2006 | WO |
WO 2007081389 | Jul 2007 | WO |
WO 2007081390 | Jul 2007 | WO |
WO 2007081391 | Jul 2007 | WO |
Number | Date | Country | |
---|---|---|---|
20070200770 A1 | Aug 2007 | US |
Number | Date | Country | |
---|---|---|---|
60777120 | Feb 2006 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 11417129 | May 2006 | US |
Child | 11711000 | US |