Miniaturized high-temperature superconductor microstrip patch antenna

Chaloupka, H.; Klein, N.; Peiniger, M.; Piel, H.; Pischke, A.; Splitt, G.

doi:10.1109/22.83826

Cited by 78 publications

(31 citation statements)

References 15 publications

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“…This cancellation renders a considerable portion of opposing currents ineffective as far as radiation efficiency is concerned and leads to a very low radiation resistance that might have been increased using a two-strip meandered line [11]. Consequently, these antennas are difficult to match, and yet require a very low temperature of operation to control material losses [12].…”

Section: Introductionmentioning

confidence: 99%

A novel approach for miniaturization of slot antennas

Azadegan

Sarabandi

2003

IEEE Trans. Antennas Propagat.

170

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Abstract-With the virtual enforcement of the required boundary condition (BC) at the end of a slot antenna, the area occupied by the resonant antenna can be reduced. To achieve the required virtual BC, the two short circuits at the end of the resonant slot are replaced by some reactive BC, including inductive or capacitive loadings. The application of these loads is shown to reduce the size of the resonant slot antenna for a given resonant frequency without imposing any stringent condition on the impedance matching of the antenna. In this paper, a procedure for designing this class of slot antennas for any arbitrary size is presented. The procedure is based on an equivalent circuit model for the antenna and its feed structure. The corresponding equivalent circuit parameters are extracted using a full-wave forward model in conjunction with a genetic algorithm optimizer. These parameters are employed to find a proper matching network so that a perfect match to a 50 line is obtained. For a prototype slot antenna with approximate dimensions of 0 05 0 0 05 0 the impedance match is obtained, with a fairly high gain of 3 dBi, for a very small ground plane ( 0 20 0 ). Since there are neither polarization nor mismatch losses, the antenna efficiency is limited only by the dielectric and Ohmic losses.

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Section: Introductionmentioning

confidence: 99%

A novel approach for miniaturization of slot antennas

Azadegan

Sarabandi

2003

IEEE Trans. Antennas Propagat.

170

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“…Both resonances have gone down slightly to 2.32 GHz and 4.78 GHz because of the longer current paths on the patch because of the slots as shown in Figure 7. This fact of using slots to enforce longer current paths has been useful to design small microstrip antennas [23][24][25][26][27]. In addition, due to the different sizes of the slots the two resonances are away from each other.…”

Section: Resultsmentioning

confidence: 99%

Design and Simulation of a Single Fed Multi-Band Circularly Polarized Microstrip Antenna With Slots

Ahmed¹,

Shaalan²,

Awadalla³

2015

PIER C

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Abstract-Nowadays the mobile personal communication systems and wireless networks are commonly used. Experience has revealed that the antennas suitable for these applications should have small size and operate in assigned different frequency bands. For this purpose, circularly polarized (CP) multiband square microstrip antenna with three N-slots and a pair of truncated corners is proposed, designed and simulated. To reduce the losses and improve the antenna efficiency in addition to the bandwidth, an efficient electromagnetic band gap (EBG) structure is introduced. The proposed antenna has produced a higher efficiency, an improved operational bandwidth, and a higher gain relative to the conventional microstrip antenna.

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“…In order to overcome this defect, the high-temperature superconductor (HTS) with low conductor loss has been used in antennas for high efficiency [4][5][6][7][8][9][10][11]. The use of the HTS in the antenna can lead to the reduction of the loss of the matching circuit and feed network, which is proportional to the conductor loss [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Besides, the HTS is able to suppress the undesirable surface-wave of the antenna, thus increasing the radiation efficiency [4]. For example, the work [5] proposed a miniaturized HTS microstrip patch antenna, which achieved the good radiation efficiency between 35% and 65%. In [6], a HTS helical antenna was designed, and its efficiency is 70%.…”

Section: Introductionmentioning

confidence: 99%

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A Circularly Polarized HTS Microstrip Antenna Array with Controllable Cryostat

Zeng

Chen

et al. 2017

International Journal of Antennas and Propagation

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A high-temperature superconductor (HTS) microstrip antenna array with right-hand circular polarization is proposed for space communications. The proposed HTS antenna array can achieve high efficiency, which is able to reduce the antenna's loss. The array consists of 16 antenna elements being fed by a T-network. A pair of symmetric meander slots is used in each antenna element to broaden the input matching bandwidth. A controllable cryostat is used as the refrigeration for HTS. The experiment shows that the gain of the proposed HTS antenna is 8.39 dB, whose 10 dB return loss bandwidth is 2.2% ranging from 5.75 GHz to 5.87 GHz. In comparison with a traditional conductor antenna array having the same configuration, the proposed array has an 8.1 dB improvement in the gain and a 69.2% enhancement in the radiation efficiency.

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Miniaturized high-temperature superconductor microstrip patch antenna

Cited by 78 publications

References 15 publications

A novel approach for miniaturization of slot antennas

A novel approach for miniaturization of slot antennas

Design and Simulation of a Single Fed Multi-Band Circularly Polarized Microstrip Antenna With Slots

A Circularly Polarized HTS Microstrip Antenna Array with Controllable Cryostat

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