Rectangular Patch with Parasitic Folded Dipoles: A Reconfigurable Antenna

Palantei, Elyas; Thiel, David V.; O'Keefe, S.G.

doi:10.1109/iwat.2008.4511330

Cited by 12 publications

(6 citation statements)

References 7 publications

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“…In fact, the classical problems in wireless-based IoT networks such as the effects of multipath propagation fading between the transmitter and receiver units, the noise effects, the limitations of the narrow and expensive bandwidth-spectrum resources and the limitations of RF power could appear as the most serious and critical issues required to overcome. The quality of the IoT network that is built by adopting data / information connectivity techniques such as those that are widely applied in traditional wireless communication networks is largely determined by these important and critical factors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…3 types of techniques such as robust adaptive computing algorithms, sophisticated signal processing and adaptive space filtering by optimizing various smart antenna technology innovations (i.e. switched parasitic element configuration category and phased array) will be widely utilized to obtain the more optimum IoT network configuration [5][6][7][8][9][10][11][12][13][14][15][16], [18], and [20].…”

Section: Introductionmentioning

confidence: 99%

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6 Monopole Elements Array Intelligent Antennas for IoT Based Environmental Surveillance Network

Palantei

Hidayat

Wardi

et al. 2021

EPI-IJE

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Three types of 6 monopoles array intelligent antennas was numerically and practically examined. The main purposes of the investigation is to guarantee that those designed antennas are feasible to implement and to install in a particular IoT based environmental surveillance network configuration. The basic differences of the three intelligent antennas lied on the frequency operations (i.e. 433 MHz, 875-915 MHz and 2.5 GHz) and the actual environment operations (whether for indoor or outdoor). The extreme differences of such frequency operations, of course, affecting the differences on the whole antenna physical dimension. The higher the frequency operation determined then the smaller the physical size of the designed antennas produced. However, the deep intelligent antenna evaluations presented in the paper is the one that operated on frequency band of 875 -915 MHz. The intelligent electronic part of six monopole wire elements arrayed on a circular ground plate was composed of LoRa chip module, Android Uno microcontroller, and the switching network part. The three parts determined whole antenna operation throughout the IoT network. The results of whole antenna examinations are thoroughly discussed in the paper.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

6 Monopole Elements Array Intelligent Antennas for IoT Based Environmental Surveillance Network

Palantei

Hidayat

Wardi

et al. 2021

EPI-IJE

Self Cite

View full text Add to dashboard Cite

show abstract

“…The antenna's lower and higher bands are generated by feeding the antenna at its first and second ends, respectively, which are located at two opposite edges of the strip monopole. To control the excitation of the lower and higher bands, each end can be connected to an ON/OFF switch (e.g., a switching diode ), which for simplicity in this study is replaced by a simple metal strip for the ON state (the forward‐biased state) and an open gap for the OFF state (the reverse‐biased state). As shown in , the results for the two cases of the antenna with PIN diodes and conducting tapes for the desired ON/OFF states show very small variations.…”

Section: Introductionmentioning

confidence: 99%

Dual‐feed small‐size LTE/WWAN strip monopole antenna for tablet computer applications

Lin

2013

Micro & Optical Tech Letters

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The design of a three-stage X-band power amplifier (PA) is presented in this article. The amplifier is realized using an ATF-38143 low noise PHEMT FET. The proposed PA achieves 17-18.3 dB power gain, a good input matching (S 11 < 28 dB) and a good output matching (S 22 < 210 dB). The average power added efficiency when the input power 5 dBm is 50% over the 4-GHz bandwidth (from 8 to 12 GHz). The total power consumption of the PA is 0.24 W from 2.5 V supply voltage. Its performance was simulated using Agilent EEs of ADS simulator. The PA is fabricated with photolithographic technique and scattering parameters are measured using Agilent Vector Network Analyzer ES1978. Measurements and simulations show good agreement. Figure 8 (a) The simulated output power and gain versus input power and (b) The simulated PAE versus input power. (c) Simulated Pout, Gain and PAE versus frequency. (d) Measured and simulated output power and gain versus input power at 10 GHz. (e) Measured and simulated PAE versus input power at 10 GHz. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com]ABSTRACT: All digitally reconfigurable ultrawideband (UWB) pulse generator is presented. To achieve independent tuning of the frequency and bandwidth, the variable time delay cell and combining amplifiers for the pulse width control are implemented. In addition, to meet the strict regulation of UWB spectrum mask, the pulse shaper based on weighted summing amplifiers is adopted. The experimental results cover the 3-5.5 GHz, with 500-2000 MHz bandwidth while meeting the 241.3 dBm/MHz power spectral density restriction. The current consumption is only 4 mA at 4 GHz and the chip size is 0.42 mm 2 in 0.18 lm CMOS process.

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“…The two tips are the antenna's two feeds for achieving LTE/WWAN operation. Each tip can be connected to an ON/OFF switch (e.g., a PIN diode for the switch ) such that the antenna can be controlled to be fed at either the first or the second tip. To simplify the manufacturing process and focus on the operating principle of the proposed antenna, the switching diode is simulated as a metal strip for its ON state (forward‐biased state) and as an open gap for its OFF state (reverse‐biased state) .…”

Section: Introductionmentioning

confidence: 99%

Printed dual‐feed triangular patch antenna disposed in a small notch in the handheld device system ground plane for LTE/WWAN operation

Hsieh

Liu

Chen

2013

Micro & Optical Tech Letters

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A printed triangular patch antenna disposed in a small notch at one corner of the system ground plane of the handheld communication device such as the smartphone, tablet computer, and phone tablet for long term evolution/wireless wide area network (LTE/WWAN) operation is presented. The small notch has a size of 10 × 20 mm2 only, and two tips of the triangular patch disposed therein are in close proximity to two adjacent perpendicular edges of the notch. The two tips are the antenna's two feeds for achieving LTE/WWAN operation. Each tip can be connected to an ON/OFF switch (e.g., a PIN diode) such that the antenna can be controlled to be fed at either the first or the second tip. When fed at the first tip, the antenna will operate in a high‐frequency band (1710–2690 MHz) to cover the GSM1800/1900/UMTS/LTE2300/2500 operation. When fed at the second tip and aided by a matching circuit, the antenna will operate at a low‐frequency band (824–960 MHz) to cover the GSM850/900 operation. Design considerations of the proposed antenna are described. Parametric studies and experimental results of the antenna are presented and discussed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2767–2773, 2013

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Rectangular Patch with Parasitic Folded Dipoles: A Reconfigurable Antenna

Cited by 12 publications

References 7 publications

6 Monopole Elements Array Intelligent Antennas for IoT Based Environmental Surveillance Network

6 Monopole Elements Array Intelligent Antennas for IoT Based Environmental Surveillance Network

Dual‐feed small‐size LTE/WWAN strip monopole antenna for tablet computer applications

Printed dual‐feed triangular patch antenna disposed in a small notch in the handheld device system ground plane for LTE/WWAN operation

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