Bandwidth enhancement of a microstrip antenna using negative inductance as impedance matching device

Kaya, Adnan; Kılınç, Selçuk; Yüksel, Erdinç; Çam, Uğur

doi:10.1002/mop.20342

Cited by 8 publications

(8 citation statements)

References 10 publications

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“…It is evident that the calculated matching level is increased by using a reactive impedance matching network [9,10,11]. Ideally, this compensation network could transform the frequency dependent complex antenna impedance Z in to a pure real resistance Z 0 over a large bandwidth as required as shown in Fig.…”

Section: Compensation Networkmentioning

confidence: 99%

“…There are two major effects of this mismatch. First, the front module will not perform at the optimal efficiency under the load variations, and, second, the radiated power decreases due to the reflected power [9][10][11]. The result is an increase in the energy consumption or transmission quality deterioration.…”

Section: Compensation Networkmentioning

confidence: 99%

“…The L network, Pi network, and T network are used frequently in matching networks. Where the greater impedance matching flexibility or where the additional criteria are of significance, the Pi or T networks must be used [11]. The research reported here has concentrated on Pi network; however circuit analysis is just as applicable to the T network.…”

Section: Compensation Networkmentioning

confidence: 99%

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Meandered Slot and Slit Loaded Compact Microstrip Antenna With Integrated Impedance Tuning Network

Kaya¹

2008

PIER B

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Abstract-In this paper, novel compact broadband dual frequency microstrip antennas are presented and broad-band impedance matching is proposed as a method for improve the matching level of antennas. The first proposed design consists of a rectangular microstrip antenna with a pair of parallel slots loaded close to the radiating edge of the patch and three meandering narrow slots embedded in the antenna surface. The second proposed design consists of a rectangular microstrip antenna with a meandering slits. With the first proposed design a size reduction of 34% and 45% for the two resonant frequencies is obtained respectively. The two frequencies have an operation frequency ratio of 1.30 and 1.25. The theoretical design implementation of compensated compact rectangular microstrip antennas with new configuration Pi-matching networks was presented. A new compensation network consisting of RC Mutator circuit and discrete capacitors are employed at the input of the microstrip antenna operating at 1.5 GHz and 2.5 GHz. The performance parameters of the designed microstrip antenna with and without compensation network were compared. The results show that compensation network can improve the return loss level and the resonant frequency can be controlled in a wide RF band.

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Section: Compensation Networkmentioning

confidence: 99%

Section: Compensation Networkmentioning

confidence: 99%

Section: Compensation Networkmentioning

confidence: 99%

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Meandered Slot and Slit Loaded Compact Microstrip Antenna With Integrated Impedance Tuning Network

Kaya¹

2008

PIER B

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“…Microstrip antenna meets most of the requirement for handheld devices, except gain and, bandwidth [1,2]. To overcome such limitations, techniques like use of thicker substrate with low dielectric constant [3], reactive capacitive loading [4,5], stacked patch antenna [6], impedance matching network [7], etc. have been suggested.…”

Section: Introductionmentioning

confidence: 99%

C-Shaped Complementing Patch Antenna for Broadband Communications

Panda

Панда

Sahu

et al. 2015

IETE Journal of Research

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Design of an optimized planar coplanar waveguide (CPW) fed complementing C-shaped patch antenna for broadband communication is presented. It resonates at 2.1 GHz with bandwidth spanning from 1.2 to 2.45 GHz for the return loss of ¡10 dB or more. In the absence of closed form design formulae for its resonant frequency, this paper proposes use of either artificial neural network (ANN) or simulated annealing (SA). Results from these stochastic methods are in good agreement with those from electromagnetic (EM) simulations as well as prototype measurements. The EM simulations show good radiation characteristics and moderate gain in the entire operating band of the antenna.

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“…The input impedance of an antenna tends to be sensitive to changes in frequency; hence, the deviation of the antenna's input impedance from a real fixed value often determines the operational range of the antenna. The input impedance of a microstrip antenna depends on its geometrical shape, dimensions, loading, and the feed type [3,4]. Therefore, the antenna input impedance is a very important design parameter, which controls the radiated power and the impedance BW.…”

Section: Introductionmentioning

confidence: 99%

Design considerations of a broad band microstrip antenna with embedded negative capacitor loading

Kaya

2007

Micro & Optical Tech Letters

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In this article, effects of negative capacitor loading on the bandwidth (BW) and efficiency of a rectangular microstrip antenna (RMSA) have been investigated. The active negative capacitor is made of a field‐effect transistor that exhibits negative resistance as well as capacitance. It can, therefore, compensate the loss of an inductor having antenna. A single negative‐capacitor‐loaded RMSA gives broadband frequency operation with broadband radiation. A microstrip patch operating at 10.5 GHz having 12.22% BW has been utilized as a reference antenna. Theoretical results for the impedance and the radiation patterns have been presented. It is also shown that the impedance BW of the antenna has been enhanced by using active negative capacitance networks from 12.22% to 16.96%, respectively. In addition, it has been shown that active compensation significantly improves the radiation pattern. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2651–2656, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22806

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Bandwidth enhancement of a microstrip antenna using negative inductance as impedance matching device

Cited by 8 publications

References 10 publications

Meandered Slot and Slit Loaded Compact Microstrip Antenna With Integrated Impedance Tuning Network

Meandered Slot and Slit Loaded Compact Microstrip Antenna With Integrated Impedance Tuning Network

C-Shaped Complementing Patch Antenna for Broadband Communications

Design considerations of a broad band microstrip antenna with embedded negative capacitor loading

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