Printed uni‐planar dual‐band monopole antenna

Fang, Chi-Yin; Chen, Hong‐Twu

doi:10.1002/mop.10947

Cited by 13 publications

(11 citation statements)

References 2 publications

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“…In Section 2, we briefly outline the results obtained in [9,12] concerning the center-fed circular disk. Section 3, the longest one, is devoted to the development of the edge-fed circular disk theory; there, a smooth build up of our novel approach is presented, starting with the parallel-coupled strip line fundamentals and ending with determination of the disk input admittance.…”

Section: Received 23 June 2009mentioning

confidence: 99%

“…These promising antenna designs, however, must require a relatively large system/antenna ground to properly excite the antenna in the case of either the antenna as a matching element to couple to the ground-plane resonance or the antenna to be the main radiator [10]. Very scant attention has been given to the WWAN mobile-unit antenna, which has its own radiating element and ground plane and fed by coaxial cable, compared with many mobile-unit antennas for WLAN applications [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Compact coaxial‐line‐fed printed mobile‐unit antenna for GSM850/900/1800/1900/UMTS WWAN operation

2010

Micro & Optical Tech Letters

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RP will pump the DCF thus enhancing the nonlinear interaction of BP signal. A 1420/1500 nm wavelength selective coupler is used to combine the pump and laser wavelength.The stability of the dual Brillouin is shown in Figure 4. Figure 5 shows the stability of the enhanced dual Brillouin spectrum obtained by repeating the experiments. The dark soliton valley depth, i.e., potential well, is changed when it was modulated by the trapping energy as shown in Figure 5. The trapping of photon within the dark well is occurred and seen; the recovery photon can be obtained by using the dark-bright soliton conversion, which is well analyzed in [1], where the trapped photon or molecule can be released and seen separately from the dark soliton pulse, in practice, in this case the bright soliton is become alive and seen. CONCLUSIONBy using the Stokes parameter in NLCM theory under Bragg resonance condition, we have successfully shown that the changes of nonlinearity parameter will depend on the motion of photon in the potential well. This influences the existence of Bragg soliton in fiber Bragg grating, i.e., trapping within the fiber grating. From the simulation results, when a soliton pulse is input into a fiber Bragg grating, both energy and momentum are conserved during each scattering process, the annihilation of pump photon creates Stokes photon and an acoustic phonon simultaneously. From the experiment, the destruction interference is seen as the dark soliton valley, i.e., well, which is surrounded by the intense optical field, which is formed by the potential well. We have also experimentally demonstrated that the dark soliton valley depth, i.e., potential well, is changed when it was modulated by the trapping energy. The trapping of photon within the dark potential well can be occurred in the similar manner of FBG and seen. In application, such a behavior can be used to confine the suitable size of light pulse or molecule, which can be employed in the same way of the optical tweezers. But in this case, the terms dynamic probing is come to be a realistic function. Moreover, the transportation of the trapped pulse or molecule is plausible. wireless communications devices as an internal antenna. Experimental prototypes of the design are constructed, tested, and studied in detail in this article.

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Section: Received 23 June 2009mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact coaxial‐line‐fed printed mobile‐unit antenna for GSM850/900/1800/1900/UMTS WWAN operation

2010

Micro & Optical Tech Letters

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“…In this case, more 802.11a/b/g/n transceivers are available on the market, and the antennas thereof are required. Many compact planar antennas were reported in the literature [1][2][3][4][5][6][7][8][9][10][11], including printed antenna structures [1][2][3][4][5][6] in either monopole [1][2][3][4] or dipole [5,6] designs and metal-plate antenna structures in planar inverted-F antennas (PIFA) [7,8] and shorted dipoles [9][10][11] designs. The latter can be more widely used in industry than the former.…”

Section: Introductionmentioning

confidence: 99%

A COMPACT, PLANAR PLATE-TYPE ANTENNA FOR 2.4/5.2/5.8-GHz TRI-BAND WLAN OPERATION

Lee¹,

Su²,

Chang³

2011

PIER Letters

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Abstract-A novel, tri-band, planar plate-type antenna made of a compact metal plate for wireless local area network (WLAN) applications in the 2.4 GHz (2400-2484 MHz), 5.2 GHz (5150-5350 MHz), and 5.8 GHz (5725-5825 MHz) bands is presented. The antenna was designed in a way that the operating principle includes dipole and loop resonant modes to cover the 2.4/5.2 and 5.8 GHz bands, respectively. The antenna comprises a larger radiating arm and a smaller loop radiating arm, which are connected to each other at the signal ground point. The antenna can easily be fed by using a 50 Ω mini-coaxial cable and shows good radiation performance. Details of the design are described and discussed in the article.

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“…To cover the commercial communication services in these systems, the tuning range of the tunable filter must be extended by at least 2:1. However, the desired wide tuning range causes the insertion loss at the lowest resonant frequency [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…In 2002, Federal Communications Commission (FCC) allocated the 3.1-10.6 GHz range for UWB unlicensed use [1], encouraging the development of commercial mass-market applications. The transmission in such a huge portion of the frequency spectrum is allowed in minimum 500-MHz wide channels, though with restrictions in signal emissions (power spectral density Ͻ Ϫ41.3 dBm/ MHz) to enable coexistence with well-established narrow-band wireless systems.…”

Section: Introductionmentioning

confidence: 99%

Varactor‐tuned microstrip bandpass filter with wide tuning range

Kim¹,

Choi²

2008

Micro & Optical Tech Letters

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impedance over the operation bands can be achieved. This length controls the additional capacitive reactance between the section C-D and the shorter radiating arm, which can also compensate for inductive coupling contributed to the shorting portion.ABSTRACT: In this study, a tunable bandpass filter with a hairpin line resonator and loading capacitors using varactor diodes was proposed. The filter was modified by adding varactor diodes to the coupling part to compensate for losses. The designed filter had a simple structure and the characteristics of wide tuning range of 87.9% from 430 to 1105 MHz and low insertion loss of less than 4.42 dB.ABSTRACT: This article presents the design and the measurement results of a 3-to 5-GHz down-converter fabricated in a 90-nm CMOS technology. The circuit consists of a single-ended low-noise amplifier and two I/Q double-balanced mixers. A transformer-based on-chip single-ended-to-differential conversion allows gain and noise performance to be optimized at a very low power. The down-converter achieves a 23-dB conversion gain, a noise figure of 3.4 dB, and an input thirdorder intercept point of Ϫ8 dBm, while drawing only 9 mA from a 1.2-V supply voltage. The down-converter exhibits competitive performance compared to the best state-of-the-art ultra-wideband circuits in the same frequency range.

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Printed uni‐planar dual‐band monopole antenna

Cited by 13 publications

References 2 publications

Compact coaxial‐line‐fed printed mobile‐unit antenna for GSM850/900/1800/1900/UMTS WWAN operation

Compact coaxial‐line‐fed printed mobile‐unit antenna for GSM850/900/1800/1900/UMTS WWAN operation

A COMPACT, PLANAR PLATE-TYPE ANTENNA FOR 2.4/5.2/5.8-GHz TRI-BAND WLAN OPERATION

Varactor‐tuned microstrip bandpass filter with wide tuning range

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