Dual-band circularly polarized microstrip antenna for GPS application

Fujimoto, Takafumi; Ayukawa, D.; Iwanaga, Kouhei; Taguchi, Mitsuo

doi:10.1109/aps.2008.4619891

Cited by 12 publications

(4 citation statements)

References 2 publications

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“…Instead of using stacked antenna structure, the single patch with perturbations is exploited to generate a fundamental mode and a higher order mode for dual-band operation [12]. For GPS applications, Tshaped slits structure at the edge of patch antenna is proposed to excite TM 10 and TM 30 modes at GPS L1/L2 band [13]. The size of the antenna is 100 mm × 100 mm × 5.6 mm including the ground plane In [14], two concentric annular slots are used to produce CP at GPS L1/L2 bands with the antenna size of 100 mm × 100 mm × 15.6 mm.…”

Section: Introductionmentioning

confidence: 99%

A Proximity-Fed Antenna for Dual-Band GPS Receiver

Pham¹,

Chung²,

Lee³

2016

PIER C

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Abstract-A new design of dual-band L1/L2 GPS antenna is proposed. The antenna generates dualband circularly polarized radiation by exciting a cross-slot and ring-slot of a concentric circular aperture using a proximity-coupled feed. Parametric studies show that the matching and axial ratio bandwidth of L1 (1.575 GHz) and L2 (1.227 GHz) bands can be independently tuned by alternating the ring radius and slot length. The range of frequency ratio and 3 dB center frequency can be highly adjusted by slot's parameters. The size of the antenna is 73 mm × 73 mm × 6.4 mm including the ground, corresponding to 0.29λ × 0.29λ × 0.026λ at 1.227 GHz.

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Section: Introductionmentioning

confidence: 99%

A Proximity-Fed Antenna for Dual-Band GPS Receiver

Pham¹,

Chung²,

Lee³

2016

PIER C

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“…However, this structure cannot operate in both frequency bands simultaneously. The antenna presented in [16] operates at dual frequencies with CP characteristics. The dual-band CP radiation is achieved by inserting slits and T-shaped elements at the patch.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable circularly polarized capacitive coupled microstrip antenna

Singh

Kanaujia²,

Dwari

et al. 2016

Int. J. Microw. Wireless Technol.

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The design and measurement of reconfigurable circularly polarized capacitive fed microstrip antenna are presented. Small isosceles right angle triangular sections are removed from diagonally opposite corners for the generation of circular polarization (CP) of axial ratio bandwidth of 11.1%. Horizontal slits of different lengths are inserted at the edges of the truncated patch to provide the dual-band CP and by switching PIN diodes across the slits ON and OFF, reconfigurable circularly polarized antenna is realized. The antenna shows dual-band behavior with reconfigurable CP. In order to enhance the operation bandwidth of the antenna, an inclined slot was embedded on the patch along with PIN diodes across the horizontal slits. This proposed antenna gave an impedance bandwidth of 66.61% (ON state) ranging from 4.42 to 8.80 GHz and 68.42% (OFF state) ranging from 4.12 to 8.91 GHz and exhibits dual-frequency CP with PIN diode in OFF state and single-frequency CP with PIN diode in ON state with good axial ratio bandwidth. The axial ratio bandwidth of 4.42, 2.35, and 2.72% is obtained from the antenna. The antenna has a similar radiation pattern in all the three different CP bands and almost constant gain within the bands of CP operation.

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“…For such a dual-frequency design, the frequency ratio of two operating frequencies is generally within the range [1.5, 2] when a suitable slot length is chosen; but GPS applications need an antenna with frequency ratio about 1.28. To overcome this limitation, recently a dual band CP microstrip antenna for GPS application has been proposed [9]. This antenna produce circular polarization without a cross slot in the center of the patch.…”

Section: Introductionmentioning

confidence: 99%

“…Various patch antenna structures have been reported for dualband operation with circular polarization [4][5][6][7][8][9][10][11] and specially for GPS applications [4,5,[8][9][10][11]. The proposed antenna in [4] is a circularly polarized stacked patch antenna with aperture coupling feed.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Band Circularly Polarized Stub Loaded Microstrip Patch Antenna for GPS Applications

Heidari¹,

Heyrani²,

Nakhkash³

2009

PIER

134

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Abstract-A single-feed low-profile and easy to fabricate circularly polarized microstrip patch antenna has been developed for GPS applications. For dual frequency operation, four slots are etched near edges of the patch and a crossed slot etched in the center for generating circular polarization. In order to reducing the frequency ratio of two frequency bands of the antenna, the patch is loaded by four short circuit microstrip stubs. The paper reports several simulation results that confirm the desired characteristics of the antenna. Using stub loading, the frequency ratio of two bands of the antenna can be, even, reduced to 1.1.

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Dual-band circularly polarized microstrip antenna for GPS application

Cited by 12 publications

References 2 publications

A Proximity-Fed Antenna for Dual-Band GPS Receiver

A Proximity-Fed Antenna for Dual-Band GPS Receiver

Reconfigurable circularly polarized capacitive coupled microstrip antenna

A Dual-Band Circularly Polarized Stub Loaded Microstrip Patch Antenna for GPS Applications

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