Low Profile GALILEO Antenna Using EBG Technology

Baggen, R.; Martinez-Vazquez, M.; Leiss, J.; Holzwarth, S.; Drioli, L. Salghetti; Maagt, P. de

doi:10.1109/tap.2008.916927

Cited by 88 publications

(46 citation statements)

References 9 publications

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“…High impedance ground planes are formed by coupled resonant elements and are frequency selective electromagnetic band gap (EBG) structures. Practical realization of GNSS antennas with EBG ground planes is presented in [12,13].…”

Section: Introductionmentioning

confidence: 99%

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EBG Metamaterial Ground Plane for Mitigation of Multipath Signals in GNSS Antenna

Boyko¹,

Kukharenko²,

Yaskin³

2015

Journal of electromagnetic engineering and science

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An electromagnetic band gap (EBG) metamaterial construction is presented. A construction of a multipath mitigating ground plane, based on the EBG metamaterial is described. A method of the ground plane application and installation, which provides the multipath mitigating without spoiling antenna element phase center stability, is suggested and explained. A designed construction of GNSS antenna module, which contains the multipath mitigating ground plane, made from the presented EBG metamaterial and installed in the described way is shown and parameters of the antenna module are provided.

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Section: Introductionmentioning

confidence: 99%

“…It is shown, that implementation of such a ground plane in the GNSS antenna module construction allows achieving a multiband multipath mitigation without spoiling the antenna element radiation pattern and phase center stability unlike other GNSS antenna ground plane constructions [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

EBG Metamaterial Ground Plane for Mitigation of Multipath Signals in GNSS Antenna

Boyko¹,

Kukharenko²,

Yaskin³

2015

Journal of electromagnetic engineering and science

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“…Controlling these field components leads to improved AR [2]. The benefits to CP antenna performance introduced by EBG structures have been particularly notable in positioning systems [3]. Fractal based designs have been proposed to achieve EBG miniaturisation for GPS [4].…”

Section: Introductionmentioning

confidence: 99%

Radial EBG cell layout for GPS patch antennas

Ruvio¹,

Ammann²,

Bao³

2009

Electron. Lett.

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A novel radial layout for mushroom-like electromagnetic-bandgap (EBG) cells surrounding a printed circularly-polarised patch antenna is proposed. Two radial EBG configurations surrounding a circular patch are compared to a reference patch on a conventional ground plane of the same dimension. The radial shape and displacement of the EBG cells around the patch offers improvements in terms of gain and axial-ratio compared to the reference antenna and is more suitable for circular geometries compared to conventional Cartesian layouts. In particular, the distance between the patch and the surrounding EBG cells is independent of the cell period, which can be arbitrarily chosen and the overall layout offers footprint reduction. parameter is critical for impedance matching and gain optimisation which in a conventional Cartesian layout is constrained by the EBG cell period and the antenna radius. Thus, the radial layout offers an extra degree of freedom, which is valuable to the antenna designer. The radial layout is also geometrically more suitable for circular patches and circular groundplanes with a resulting reduction of the overall footprint compared to conventional Cartesian layouts. Configurations investigated:The reference antenna is a circular patch antenna fed by four 50 Ω coaxial probes with a relative phase delay of 90° to excite RHCP and shorted by a central pin to suppress higher-order modes. The patch radius is R p = 17 mm and the probes are located 7 mm from the centre. A Taconic CER10 substrate of dimension 110 mm × 110 mm × 1.58 mm is used for all antennas. The initial EBG structure used is the well-known mushroom-like Sievenpiper square cell Cartesian array [7]. In order to achieve a bandgap across the GPS L1 band, the period p = w + l of the structure was chosen to be 20.4 mm (where w = 3 mm is the separation between adjacent cells and l = 17.4 mm is the square dimension), so that the overall area of the cell surface is A = 302.76 mm 2 . The diameter of the grounding vias is 1.3 mm. The dispersion diagram for this structure (Figure 1) shows the bandgap to be from 1.41 GHz to 1.75 GHz. This Cartesian array was reshaped into adjacent truncated wedge-shaped sectors to match the rotationally symmetric layout of the circular patch antenna. The area of 302.76 mm 2 was maintained which is independent of the radius of the patch antenna and the order of the ring to which the cell belongs, and the spacing between cells was w=3 mm. Two different configurations of EBG cell layouts were evaluated and compared to the reference antenna. They are an 8-sector dual-ring and a 16-sector single-ring radial arrangement as shown in Figure 2. A 1.3 mm diameter grounding via was centred in each radial cell. Table 1 lists the geometric parameters.Results: All antennas were well matched (> 10dB RL) in the GPS L1 band and the radiation properties were measured. The measured boresight gain for the reference patch was 3.9 dBic. Although a minor gain enhancement was found for the dual-ring configuration compared to the reference, ...

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“…So, investigations on compact, broadband and multiband EBG structures have excited many researchers. In [13][14][15], high-impedance surface (HIS) structures, comprising square conducting patches connected by via to the groundplane, were proposed and analyzed. This realizes a distributed network of inductive and capacitive elements by means of the grounding vias and the proximity of adjacent patches.…”

Section: Introductionmentioning

confidence: 99%

Directional Dual-Band Slot Antenna With Dual-Bandgap High-Impedance-Surface Reflector

Bao¹,

Ruvio²,

Ammann³

2009

PIER C

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Abstract-A compact dual-band high-impedance-surface EBG structure is employed as a reflector for a dual-band annular-slot antenna. The reflector comprises an array of miniaturized EBG cells which utilizes square patches augmented by four S-shaped corrugated arms to reduce the resonant frequency of the proposed EBG structure. In order to broaden the bandwidth and adjust the frequency ratio for the dual-band EBG structure, a log-periodic spacing between the S-shaped strips is introduced. The combination of microstrip-fed annular slot and EBG reflector provides directional properties for both frequency bands with reduced size and low-profile.

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Low Profile GALILEO Antenna Using EBG Technology

Cited by 88 publications

References 9 publications

EBG Metamaterial Ground Plane for Mitigation of Multipath Signals in GNSS Antenna

EBG Metamaterial Ground Plane for Mitigation of Multipath Signals in GNSS Antenna

Radial EBG cell layout for GPS patch antennas

Directional Dual-Band Slot Antenna With Dual-Bandgap High-Impedance-Surface Reflector

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