Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1998-02-01
2000-08-22
Tsang, Fan
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455324, 455326, 455338, 327113, H04B 126
Patent
active
061085294
ABSTRACT:
A radio comprising an FET mixing device for multiplying a first-frequency signal with a second frequency signal to generate a third frequency analog mixer output signal. A local oscillator input port receives a periodic sinusoidal local oscillator signal at a local oscillator frequency from an external local oscillator source. A drive circuit generates a substantially square-wave two-voltage level switching signal for driving said mixing device. An analog-to-digital converter generates a digital representation of said third frequency analog mixer output signal.
REFERENCES:
patent: 3577206 (1971-05-01), Ferrell
patent: 3626076 (1971-12-01), Uchiyama
patent: 3700928 (1972-10-01), Milberger et al.
patent: 3700929 (1972-10-01), Frederiksen
patent: 4352210 (1982-09-01), Puckette
patent: 4500847 (1985-02-01), Hallford
patent: 4502028 (1985-02-01), Leake
patent: 4590616 (1986-05-01), Van Glabbeek
patent: 4675911 (1987-06-01), Sokolov et al.
patent: 4979233 (1990-12-01), Kawahata
patent: 5027163 (1991-06-01), Dobrovolny
patent: 5060298 (1991-10-01), Waugh et al.
patent: 5130768 (1992-07-01), Wu et al.
patent: 5140705 (1992-08-01), Kosuga
patent: 5153469 (1992-10-01), Petted et al.
patent: 5280648 (1994-01-01), Dobrovolny
patent: 5303417 (1994-04-01), Laws
patent: 5361409 (1994-11-01), Vice
patent: 5438693 (1995-08-01), Cox
patent: 5493720 (1996-02-01), Peterson
patent: 5513390 (1996-04-01), Vice
patent: 5551074 (1996-08-01), Vice
patent: 5602501 (1997-02-01), Shiga
patent: 5678226 (1997-10-01), Li et al.
patent: 5697092 (1997-12-01), Mourant et al.
patent: 5799248 (1998-08-01), Vice
patent: 5926750 (1999-07-01), Ishii
PCT International Search Report, May 26, 1999; Application No. PCT/US99/01986.
LaFerrara, H., et al. ("GaAs MMIC Passive Mixers for Wireless Applications", M/A-COM, IC Business Unit, Lowell, Massachuetts. 4 pp., undated.
Oxner, "High Dynamic Range Ming with the Si8901", Electronic Engineering (May 1986), vol. 58, No. 713, pp. 53-56.
Weiner et al., "2 to 8 GHZ Double Balanced Mesfet Mixer with +30 DBM Input 3RD Order Intercept", IEEE MTT International Microwave Symposium Digest, New York (May 1988), vol. 2, No. 1988, pp. 1097-1100.
Tokumitsu et al., "Divider and Combiner Line-United FET's as Basic Circuit Function Modules--Part II", IEEE Transactions on Microwave Theory and Techniques (Sep. 1990), vol. 38, No. 9, pp. 1218-1226.
Neuf et al., "Double Balanced, Coplanaer, Image Rejection Mixer Uses Molonithic Mesfet Quad", MTT-S International Microwave Symposium Digest, Boston (Jun. 1991), vol. 2, No. 1991, pp. 843-846.
Dexter Charles Edward
Vice Michael Wendell
Bae Systems Aerospace Electronics Inc.
Jackson Blane J.
Tsang Fan
LandOfFree
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