Low visibility dual band antenna with dual polarization

Details Low visibility dual band antenna with dual polarization Low visibility dual band antenna with dual polarization

2007-04-24

2007-04-24

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S702000

Reexamination Certificate

active

11040860

ABSTRACT:
A low visibility, field-diverse, dual band antenna provides cross-polarized fields enhancing signal communications. A generally flat, but helical, antenna is achieved in conjunction with a core substrate about which the antenna is wrapped, wound, or fixed. The core substrate, pitch or angle of the helix, and length of the transmitting antenna are chosen for a specific two (2) selected resonant frequency. A two-pole low-pass filter may be used to achieve dual band transmission. The passive components are specifically selected to achieve two (2) resonant frequencies PCS/Cellular 821–896 MHz and 1850–1990 MHz. The length and width of the helix are chosen in order to dimension the helical antenna between its linear and circular polarization modes to thereby deliver field-diverse and cross-polarized transmission modes.

REFERENCES:
patent: 1581133 (1926-04-01), Mackenzie
patent: 1911234 (1933-05-01), Meyer
patent: 2094108 (1937-09-01), Ryall
patent: 2712604 (1955-07-01), Thomas, Jr. et al.
patent: 2802210 (1957-08-01), Berndt
patent: 2945084 (1960-07-01), Daggett
patent: 2953786 (1960-09-01), Krause
patent: 2963704 (1960-12-01), Yates et al.
patent: 2966678 (1960-12-01), Harris
patent: 2966679 (1960-12-01), Harris
patent: 3199108 (1965-08-01), Munk
patent: 3246245 (1966-04-01), Turner
patent: 3264647 (1966-08-01), Nuttle
patent: 3296536 (1967-01-01), Copeland et al.
patent: 3383695 (1968-05-01), Jarek
patent: 3386033 (1968-05-01), Copeland et al.
patent: 3396396 (1968-08-01), Charlton et al.
patent: 3474453 (1969-10-01), Ireland
patent: 3487463 (1969-12-01), Rogers
patent: 3523251 (1970-08-01), Halstead
patent: 3623113 (1971-11-01), Faigen et al.
patent: 3624662 (1971-11-01), Feder
patent: 3720874 (1973-03-01), Gorcik et al.
patent: 3781899 (1973-12-01), Lockwood
patent: 3858220 (1974-12-01), Arnow
patent: 3932873 (1976-01-01), Garcia
patent: 3961332 (1976-06-01), Middlemark
patent: 4028704 (1977-06-01), Blass
patent: 4117493 (1978-09-01), Altmayer
patent: 4117495 (1978-09-01), Hochstein
patent: 4163981 (1979-08-01), Wilson
patent: 4229743 (1980-10-01), Vo et al.
patent: 4442436 (1984-04-01), Newcomb
patent: 4442438 (1984-04-01), Siwiak et al.
patent: 4494117 (1985-01-01), Coleman
patent: 4494120 (1985-01-01), Gary
patent: 4494122 (1985-01-01), Garay et al.
patent: 4504834 (1985-03-01), Garay et al.
patent: 4571595 (1986-02-01), Phillips et al.
patent: 4730195 (1988-03-01), Phillips et al.
patent: 4849767 (1989-07-01), Naitou
patent: 5300940 (1994-04-01), Simmons
patent: 5412392 (1995-05-01), Tsunekawa
patent: 5977931 (1999-11-01), Openlander
patent: 5990848 (1999-11-01), Annamaa et al.
patent: 6127979 (2000-10-01), Zhou et al.
patent: 6292156 (2001-09-01), Openlander
patent: 6653987 (2003-11-01), Lamensdorf et al.
patent: 6720935 (2004-04-01), Lamensdorf et al.
Kuboyama, Haruhiro et al., “Experimental Results with Mobile Antennas Having Cross-Polarization Components in Urban and Rural Areas,”IEEE Transactions on Vehicular Technology, vol. 39, No. 2, 150-160, 1990.

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