Simple Printed Multiband Antenna With Novel Parasitic-Element Design for Multistandard Mobile Phone Applications
TL;DR: A simple printed multiband antenna with parasitic-element design for multi-standard handheld terminals in mobile communications is presented and is cost effective in manufacturing and easy to optimize for different frequency bands.
Abstract: A simple printed multiband antenna with parasitic-element design for multi-standard handheld terminals in mobile communications is presented. The proposed antenna performs three resonance modes covering six bands of wireless standards, including GSM, GPS, DCS, PCS, UMTS, and LTE 2300/2500. In geometry, the antenna simply consists of two metal stubs. One is an L-shaped driven stub working as a feeder and an embedded transmission line. The other is a U-shaped parasitic stub working as a radiator. With fully printed and simple configuration, the proposed antenna design is cost effective in manufacturing and easy to optimize for different frequency bands. Parametric studies and the design rule are included. The antenna occupies an area of 18 × 37 mm2 on top of a system board. This communication covers the details of the antenna design, working principle, and the performances of simulation and measurement.
Citations
More filters
TL;DR: In this paper, a multiband fractal co-planar waveguide (CPW)-fed slot antenna with a dielectric resonator conforming to multiple wireless standards is presented.
Abstract: A multiband fractal co-planar waveguide (CPW)-fed slot antenna loaded with a dielectric resonator conforming to multiple wireless standards is presented in this paper. The Minkowski fractal geometry is utilized to generate multiple frequency bands as well as to provide a miniaturized design compared to its Euclidean counterpart. The idea behind placing the dielectric load is to serve a dual purpose of enhancing the impedance bandwidth of the antenna at the upper frequency band as well as improving the overall gain of the antenna. The slot loop acts as a hybrid antenna performing the task of both an antenna as well as a feed mechanism for the dielectric slab to radiate. Design guidelines involving closed form formulae and equivalent model consisting of lumped resonators, distributed resonators and impedance transformers of the dielectric-loaded fractal slot antenna are provided to present an insight into the functioning of the antenna. The reflection coefficient parameters of the antenna yield a close match between the circuit model and those obtained from full wave simulator. The proposed antenna exhibits a heptaband performance with a maximum gain of 3.1 dBi.
72 citations
Cites methods from "Simple Printed Multiband Antenna Wi..."
...Reactive loading using shorting pins have also been used [7]–[9] as well as fractal-shaped antennas [10]–[12]....
[...]
TL;DR: In this paper, a small-size low-profile narrow-frame antenna for seven-band WWAN/LTE operations in the internal smartphone applications is proposed, which is capable of covering GSM850/900/DCS/PCS/UMTS 2100/lTE2300/2500 operating bands.
Abstract: A small-size low-profile narrow-frame antenna for seven-band WWAN/LTE operations in the internal smartphone applications is proposed. The greatest highlight of this proposed antenna is that its narrow edge has a width of only 5 mm, which is very novel for smartphone applications. Meanwhile, the proposed narrow-frame antenna has a small size of 5 × 40 mm2 and a low profile of 3 mm above the circuit board, which makes it very promising for slim smartphone applications. The proposed antenna is capable of covering GSM850/900/DCS/PCS/UMTS 2100/LTE2300/2500 operating bands. Detailed design considerations of the proposed antenna are described, and both experimental and simulation results are also presented and discussed.
61 citations
Cites background from "Simple Printed Multiband Antenna Wi..."
...Seen from the above discussion, most of these antennas [2], [8]–[11] occupy too much space of the PCB, and the width of the narrow edges of these antennas is always more than 10 mm, which are not suitable for a narrow-frame antenna....
[...]
TL;DR: In this paper, a compact frequency reconfigurable antenna for LTE/WWAN mobile handset applications is proposed, which mainly consists of radiating elements and two PIN diodes, and the antenna has a simple structure with a compact size of ${365} \times {10};\text{mm}^{2}$.
Abstract: In this communication, a compact frequency reconfigurable antenna for LTE/WWAN mobile handset applications is proposed The proposed antenna mainly consists of radiating elements and two PIN diodes In addition, the antenna has a simple structure with a compact size of ${365} \times {10}\;\text{mm}^{2}$ This antenna operates in six modes, and each mode is given a different resonant pathway by adjusting the bias states of two PIN diodes When PIN diodes #1 and #2 are in the on and off states, respectively, the proposed antenna can cover the LTE700 (698–787 MHz) band by operating in mode 1 Moreover, the wide bandwidth in a higher band formed by combining modes 2 and 3 can cover the LTE2300 (2305–2400 MHz) and LTE2500 (2500–2690 MHz) bands When PIN diodes #1 and #2 are in the off and on states, respectively, a resonant frequency in the lower band is formed by integrating modes 4 and 5 This can cover the GSM850 (824–894 MHz) and GSM900 (880–960 MHz) bands When the two PIN diodes are in the on state, the proposed antenna can cover the GSM1800 (1710–1880 MHz), GSM1900 (1850–1990 MHz), and UMTS (1920–2170 MHz) bands in operating mode 6
60 citations
Cites background from "Simple Printed Multiband Antenna Wi..."
...However, most of them could not cover the LTE700 band because the antennas required additional space, as the electrical length of λg/4 is approximately 700 MHz [1]....
[...]
TL;DR: The proposed multiband antenna consists of a meandered planar inverted-F antenna with an additional branch line for wide bandwidth and a folded-loop antenna that provides a wide bandwidth to cover the hepta-band LTE/GSM/UMTS operation.
Abstract: This paper proposes a multiband antenna for LTE/GSM/UMTS band operation. The proposed antenna consists of a meandered planar inverted-F antenna with an additional branch line for wide bandwidth and a folded-loop antenna. The antenna provides a wide bandwidth to cover the hepta-band LTE/GSM/UMTS operation. The measured 6 dB return loss bandwidth is 169 MHz (793–962 MHz) at the low-frequency band and 1030 MHz (1700–2730 MHz) at the high-frequency band. The overall dimension of the proposed antenna is 55 mm × 110 mm × 5 mm.
39 citations
Cites background from "Simple Printed Multiband Antenna Wi..."
...The folded-loop antenna operates at the high-frequency band covering GSM1800 (1710–1880MHz), GSM1900 (1850–1990MHz), UMTS (1920–2170MHz), LTE2300 (2305–2400MHz), and LTE2500 (2500–2690MHz), and the MPIFA with an additional branch line covers the low-frequency band, including GSM850 (824–894MHz) and GSM900 (880–960MHz) [2–6]....
[...]
TL;DR: In this article, the authors proposed a novel miniaturized slotted multiband antenna, which consists of a kite-shaped slot in the radiating patch to obtain miniaturization, C- and G-shaped slots in the ground plane to incorporate multiband operation and a microstrip feedline to obtain an impedance matching.
Abstract: A novel miniaturized slotted multiband antenna is presented in this article. The antenna consists of a kite-shaped slot in the radiating patch to obtain miniaturization, C- and G-shaped slots in the ground plane to incorporate multiband operation and a microstrip feedline to obtain an impedance matching. The aforementioned miniaturization method results in about 50% reduction in active patch area and about 36% reduction in volume of the proposed design, as compared to the conventional antenna. G-shaped slot is used to obtain operations at 3.6 and 5.8 GHz, while C-Shaped slot is used to obtain operations at 6.9 and 9.5 GHz. The antenna has an active patch area of only 384
$$\hbox {mm}^{2} (24\times 16\,\hbox {mm}^{2})$$
, and the entire performance analysis of the antenna are carried out using HFSS v.13.0 simulation software. The proposed design operates at about 3.58 (WiMAX), 5.9 (WLAN), 6.72 (Satellite TV), 8.51 and 9.76 GHz (X-band) with $${S}_{11}<-\,10\,\hbox {dB}$$
bandwidth of about 1.95% (3.54–3.61 GHz), 3.5% (5.88–6.09 GHz), 1.7% (6.68–6.80 GHz), 4.4% (8.36–8.74 GHz) and 3.96% (9.4–9.78 GHz), respectively. The proposed structure is compact in size, simple in construction, low profile, easy to fabricate, exhibits good impedance matching, moderate gain and stable radiation characteristics across the operational bandwidths.
34 citations
References
More filters
TL;DR: In this paper, a reduced size microstrip monopole slot antennas with different slot shapes-straight, L and inverted T, and placed on a small ground plane, are investigated.
Abstract: Reduced size microstrip monopole slot antennas with different slot shapes-straight, L and inverted T, and placed on a small ground plane, are investigated. The ground plane size is 50 mm/spl times/80 mm, which is about the size of a typical PC Wireless card. Detailed simulation and experimental investigations are conducted to understand their behavior and optimize for broadband operation. It is shown that, the variation in the slot shape, from straight to L and T shapes, helps in generating additional resonances, which when coupled to the original resonances of the slot, further increases impedance bandwidths. The bent shapes of the L and T slots reduce their height and provide more space on the ground plane for electronics. A mirror image dual L-slot antenna, placed at two adjacent corners of the ground plane, is also investigated and optimized for the polarization diversity. They provide an impedance bandwidth of 87%, with near orthogonal radiation characteristics. The measured impedance bandwidths (S/sub 11/=-10 dB) of up to 60%, 84%, and 80% are achieved for these straight, L and inverted T slots respectively, by suitably selecting their design parameters. The simulation results are in good agreement with the experimental data considering several practical issues.
293 citations
TL;DR: In this article, a low profile planar monopole antenna with a shorted parasitic inverted-L wire fed using a microstrip feedline for wireless communications in the wireless local-area network (WLAN) bands is studied.
Abstract: A low-profile planar monopole antenna with a shorted parasitic inverted-L wire fed using a microstrip feedline for wireless communications in the wireless local-area network (WLAN) bands is studied. The driven monopole element and shorted parasitic wire can separately control the operating frequencies of two excited resonant modes, which cover the 2.4-, 5.2-, and 5.8-GHz WLAN bands. This antenna design is not only suitable as a monopole antenna but also as a diversity antenna for 2.4-, 5.2-, and 5.8-GHz band operations. The lower mode of the proposed antenna has an impedance bandwidth (2:1 VSWR) of about 188 MHz (2313-2501 MHz), which covers the required bandwidth for 2.4 GHz WLAN band (2400-2484 MHz); on the other band, the upper mode has a bandwidth of about 2843 MHz (3930-6773 MHz) covering the HIPERLAN band (5150-5350 MHz) and 5.8-GHz WLAN band (5725-5852 MHz). For frequencies across the three operating bands, the proposed antenna shows similar monopole-like radiation patterns, and good antenna gain across the operating bands is obtained. Details of the design considerations for the proposed antenna are described, and the experimental results of the antenna performances obtained are presented and discussed.
205 citations
TL;DR: In this paper, the simulation and experimental investigations of a printed microstrip slot antenna are presented, which is a quarter wavelength monopole slot cut in the finite ground plane edge, and fed electromagnetically by a microstrip transmission line.
Abstract: This paper presents the simulation and experimental investigations of a printed microstrip slot antenna. It is a quarter wavelength monopole slot cut in the finite ground plane edge, and fed electromagnetically by a microstrip transmission line. It provides a wide impedance bandwidth adjustable by variation of its parameters, such as the relative permittivity and thickness of the substrate, width, and location of the slot in the ground plane, and feed and ground plane dimensions. The ground plane is small, 50 mm/spl times/80 mm, and is about the size of a typical PC wireless card. At the center frequency of 3.00 GHz, its width of 50 mm is about /spl lambda//2 and influences the slot impedance and bandwidth significantly. An impedance bandwidth (S/sub 11/=-10 dB) of up to about 60% is achieved by individually optimizing its parameters. The simulation results are confirmed experimentally. A dual complementary slot antenna configuration is also investigated for the polarization diversity.
174 citations
"Simple Printed Multiband Antenna Wi..." refers methods in this paper
...Besides, inspired by the slot designs in [11]–[13], we incorporated a virtual slot structure into our design to create the third resonance mode, and so to increase the bandwidth without adding extra structure....
[...]
TL;DR: A new design for built-in handset antennas in that metal strips as additional resonators are directly connected with a feed strip and the size can be reduced by an order of 10/spl sim/20%, which is desirable since the size of mobile phones is becoming smaller according to consumer preferences.
Abstract: In this paper, we propose a new design for built-in handset antennas in that metal strips as additional resonators are directly connected with a feed strip. With the new design scheme, a quad-band antenna for covering GSM900, DCS1800, PCS1900, and UMTS2000 bands and a five-band antenna for covering GSM900, DCS1800, PCS1900, UMTS2000, and ISM2450 bands for use in mobile built-in handsets are experimentally carried out. Compared with the parasitic form with a shorted strip placed away from the main radiator in the open literature, the size of the proposed antennas can be reduced by an order of 10/spl sim/20%, which is desirable since the size of mobile phones is becoming smaller according to consumer preferences. Moreover, the impedance matching for each band of the new antennas becomes easy. The new quad-band and five-band built-in handset antennas are developed within the limits of a 36/spl times/16/spl times/8 mm/sup 3/ volume. The antennas are also analyzed using the finite-difference time-domain technique. A good agreement is achieved between measurement and simulation.
145 citations
"Simple Printed Multiband Antenna Wi..." refers background in this paper
...Many of the conventional multiband internal antennas are in the form of monopoles or PIFAs (planar inverted-F antennas) [1]–[4], which are usually narrow-banded and hard to cover the whole communication bands....
[...]
TL;DR: In this article, the authors present the results concerning the input return loss, radiation characteristics and efficiency of novel internal, planar, multiband patch antennas for multistandard mobile phone devices.
Abstract: The advent of new, multistandard mobile phone devices is an important challenge for antenna designers, as they have to implement integrated antennas with multiband operation within a volume that is rapidly shrinking. In the paper, research results concerning the input return loss, radiation characteristics and efficiency of novel internal, planar, multiband patch antennas are presented.
125 citations
"Simple Printed Multiband Antenna Wi..." refers background in this paper
...Many of the conventional multiband internal antennas are in the form of monopoles or PIFAs (planar inverted-F antennas) [1]–[4], which are usually narrow-banded and hard to cover the whole communication bands....
[...]