A novel design of a 10-dipole log-periodic antenna with LTE-800 and GSM-900 band rejection

Mistry, Keyur K.; Lazaridis, Pavlos I.; Loh, Tian Hong; Zaharis, Zaharias D.; Glover, Ian; Liu, Bo

doi:10.1109/nemo.2019.8853709

Cited by 6 publications

(5 citation statements)

References 17 publications

(19 reference statements)

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“…Another significant study is presented in [8] and investigates the interference effects due to coexistence of the DTT broadcasting service and LTE service in both the 700 MHz and 800 MHz bands. This paper is an extended version of a paper submitted to the IEEE NEMO-2019 conference [9]. Moreover, the proposed antenna in this paper has been further optimized to achieve higher and flatter realized gain (RG) along with a higher FBR (front-to-back ratio) throughout the DTT reception passband.…”

Section: Conventional Lpda Geometrymentioning

confidence: 99%

“…Extending the LPDA design presented in [19], an improved version of this LPDA [9,20] is proposed in this paper. Instead of optimizing the whole antenna geometry, which would lead to an increased computational burden and doubtful convergence, this design is the result of optimizing the lengths of the front three dipoles only as well as the distances between these dipoles.…”

Section: Proposed Lpda Geometrymentioning

confidence: 99%

“…This paper is an extended version of a paper submitted to the IEEE NEMO-2019 conference [9]. Moreover, the proposed antenna in this paper has been further optimized to achieve higher and flatter realized gain (RG) along with a higher FBR (front-to-back ratio) throughout the DTT reception passband.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Log-Periodic TV Reception Antenna with UHF Mobile Communications Band Rejection

Mistry¹,

Lazaridis

Zaharis

et al. 2020

Electronics

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The coexistence of TV broadcasting and mobile services causes interference that leads to poor quality-of-service for TV consumers. Solutions usually found in the market involve external band-stop filters along with TV reception log-periodic and Yagi-Uda antennas. This paper presents a log-periodic antenna design without additional filtering that serves as a lower cost alternative to avoid interference from mobile services into the UHF TV. The proposed antenna operates in the UHF TV band (470–790 MHz-passband) and rejects the 800 MHz and 900 MHz bands (stopband) of 4G/LTE-800 and GSM900 services, respectively. Matching to 50 Ohms is very satisfactory in the passband with values of S11 below −12 dB. Furthermore, the antenna is highly directive with a realized gain of approximately 8 dBi and a front-to-back ratio greater than 20 dB.

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Section: Conventional Lpda Geometrymentioning

confidence: 99%

Section: Proposed Lpda Geometrymentioning

confidence: 99%

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Optimization of Log-Periodic TV Reception Antenna with UHF Mobile Communications Band Rejection

Mistry¹,

Lazaridis

Zaharis

et al. 2020

Electronics

Self Cite

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“…Another variant of LPDA has also been proposed in [18] using Particle Swarm Optimization with velocity mutation algorithm (PSOvm). However, this antenna was further optimized using the Trusted Region Framework (TRF) algorithm [19] in CST Studio Suite and described in [20].…”

Section: Antenna Under Testmentioning

confidence: 99%

Accurate antenna gain estimation using the two-antenna method

Mistry¹,

Lazaridis²,

Zaharis³

et al. 2019

Antennas and Propagation Conference 2019 (APC-2019)

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This paper demonstrates a simulation-assisted measurement technique to determine the gain of an antenna accurately in an open test site or anechoic chamber. The proposed technique is based on the two-antenna gain measurement method using Friis equation in far-field free-space conditions, with the actual measurement test setup modelled in CST Studio Suite for simulation. An LTE-reject UHF TV log-periodic dipole antenna is used to validate the gain measurement technique in this paper. The simulation of the two-antenna gain measurement method is used in order to estimate an appropriate minimum separation distance between the two antennas that needs to be used for actual measurements to ensure far-field free-space conditions. Determining this minimum separation distance using several simulations instead of actual measurements saves time and effort because it eliminates the need to perform measurements at various separation distances. The measured realized gain obtained using this technique provides a good agreement with the simulation and thus validates the accuracy of this technique.

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“…A printed LPDA antenna for 3.4 to 3.8 GHz is designed, simulated, and compared with measured results are also performed but in this article lower end of millimeter‐wave frequency bands are considered and the gain attained is also very less 14 . A 10 dipole log periodic antenna which is capable of rejecting 4G‐LTE mobile services is designed and simulated at the frequency band ranging from 450 to 1000 MHz whichever is not suitable for the millimeter‐wave frequency band but the concept of carrel's model can be considered from this article 15 . A design of the UWB LPDA antenna is proposed at a frequency range of 2.2 to 11 GHz.…”

Section: Introductionmentioning

confidence: 99%

A wide band log periodic millimeter‐wave antenna for 5G femtocells applications

VHarini

M.V.SSairam²,

RMadhu

2021

Trans Emerging Tel Tech

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A wide band log periodic millimeter‐wave antenna is proposed for 5G femtocells applications. This log periodic antenna consists of circular patches with radius kept up at a proportion of scaling factor τ=1.05. The proposed antenna prototype is designed and simulated at a frequency range of 25 to 35.5 GHz with a fractional bandwidth of 34.73%. This proposed antenna exhibits low return loss at all frequency bands such as 26, 27.5, 29, 30, 32, 33, 35, and 38.1 GHz with reflection coefficient values such as −13.41,−29.07,−30.9,−23.11,−11.29,−11.44,−12.47, and −10.01 dB including almost 101% radiation efficiency and attained maximum gain values such as 11.36,10.86,10.83,11.31,9.88,9.19,11.5, and 12.36 dBi. Over the entire frequency band, the proposed antenna exhibits right‐hand circular polarization with an axial ratio of under 3 dB. Furthermore, the antenna is fabricated and measured the results where there is a better agreement with simulated results. This type of low‐profile antenna can be applicable for femto base stations for 5G communications.

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A novel design of a 10-dipole log-periodic antenna with LTE-800 and GSM-900 band rejection

Cited by 6 publications

References 17 publications

Optimization of Log-Periodic TV Reception Antenna with UHF Mobile Communications Band Rejection

Optimization of Log-Periodic TV Reception Antenna with UHF Mobile Communications Band Rejection

Accurate antenna gain estimation using the two-antenna method

A wide band log periodic millimeter‐wave antenna for 5G femtocells applications

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