Search for Antenna

Nurudea zhengii Ren, A New Species of the Rhus Gall Aphids (Aphididae: Eriosomatinae: Fordini) from Eastern China

Zhu-Mei Ren^1,*, Xu Su², Carol D von Dohlen³ and Jun Wen^4,1,*

...length and proportion of antennal segments, the structure of antennal secondary sensilla, and the flower-like shape of the galls that are formed on its primary host. Its primary host plant is Rhus hypoleuca, whereas other Nurudea species are on R. chinensis.

...

Morphology, Surface Structure and Sensory Receptors of Larvae of Cueta lineosa (Rambur 1842) (Neuroptera: Myrmeleontidae)

Sadreddin Tusun*

...rd instar larvae such as antennae, head, mandibles, abdomen and types of sensory receptors are described and illustrated.

...

Identification and Expression Analysis of an Olfactory Receptor Gene Family in the Yemma signatus Hsiao (Hemiptera: Berytidae)

Yue Qin Song, Hui Zhong Sun* and Jun Feng Dong

...basis of female and male antennal transcriptomes of Yemma signatus adults, a total of 66 candidate Y. signatus olfactory receptor genes (YsigORs), including one olfactory co-receptor (Orco), were identified in this study. All the sequences were further validated by cloning and sequencing. Tissue expression profiles of all YsigOR genes in the antennae of females and males were analyzed using real-time quantitati...

Muhammad Farooq1, Shahid Bashir1*, Irshad Ullah1, Muhammad Nadeem1

FREQUENCY AND POLARIZATION RECONFIGURABLE MICROSTRIP ANTENNA

...econfigurable microstrip antenna. The simple design
consists of two slots and two feeds. In one slot there is a switch. The two feeds are positioned on the right and left
diagonal of microstrip antenna. When the switch is ON the electrical size of antenna becomes small and it resonates
at higher UMTS 2100 MHz band with circular polarization. Similarly, when the switch ...

Sahib Khan*, Abdur Rehman*, Nasir Ahmad**, Muhammad Naeem***

THE REDUCTION OF SPECIFIC ABSORPTION RATE AT DIFFERENT FREQUENCIES

...arable rectangular patch antenna for 1.8GHz
and 2.45GHz wireless applications. Antenna is designated on a 3mm X 3mm X 3mm resolution truncated Hugo body
model in Computer simulation technology software. The ramification reveals the specific absorption rate simulated
value that were reduced by 89% compared to previously achieved SAR reduction of 83.5%. A reduction of power
absorption was also notic...

Numan Ahmad, Shahid Bashirand Shahid Rauf

DESIGN OF MINITURISED MIMO ANTENNA WITH W-LAN BAND NOTCHED FOR ULTRA WIDE BAND (UWB) APPLICATIONS

...nput Multi-output (MIMO) antenna is proposed for Ultra-wideband (UWB) applications having capability to mitigate interference with the WLAN (5.15GHZ-5.85GHZ) operating band. A ‘spider’ shape structure is etched on the ground as a decoupling structure to obtain impedance matching as well as desired isolation. W-LAN notched band in the entire Ultra Wide band is obtained by etching a couple of straight line on the ground plane. A very compact UWB-MIMO...

Gulzar Ahmad, Muhammad Inyatullah Babar, Muhammad Irfan

A NOVEL WIDEBAND MICROSTRIP PATCH ANTENNA FOR SATELLITE COMMUNICATIONS IN KU-BAND

...nhanced microstrip patch antenna has been proposed for satellite communications. The bandwidth has been increased using parasitic patches. The size of the proposed antenna is 15x8 mm2. It has been observed that the antenna has a bandwidth of 4.08GHz, a return loss of 49.07 dB at the center frequency, a maximum gain of 8.25 dBi and total efficiency of more than 90%. This

Numan Ahmad1, Shahid Bashir1*, Shahid Rauf1

DESIGN OF MINITURISED MIMO ANTENNA WITH W-LAN BAND NOTCHED FOR ULTRA WIDE BAND (UWB) APPLICATIONS

...nput Multi-output (MIMO) antenna is proposed for Ultra-wideband (UWB) applications having

capability to mitigate interference with the WLAN (5.15GHZ-5.85GHZ) operating band. A ‘spider’ shape structure is

etched on the ground as a decoupling structure to obtain impedance matching as well as desired isolation. W-LAN

notched band in the entire Ultra Wide band is obtained by etching a couple of straight line on the gro...

Gulzar Ahmad1*, M. Inayatullah Babar1, M.Irfan1

A NOVEL WIDEBAND MICROSTRIP PATCH ANTENNA FOR SATELLITE COMMUNICATIONS IN KU-BAND

...nhanced microstrip patch antenna has been proposed for satellite communications.

The bandwidth has been increased using parasitic patches. The size of the proposed antenna is 15x8mm2. It has

been observed that the antenna has a bandwidth of 4.08GHz, a return loss of 49.07dB at the center frequency, a

maximum gain of 8.25dBi and total efficiency of more tha...

Muhammad Qasim*, Mohib Ahmad*, Mohammad Inayatullah Babar*, Shahid Bashir*,

Farah Mahmood*, Zeeshan Sabir*

INVESTIGATING THE EFFECTS OF VARIOUS PARAMETERS ON EFFICIENCY OF PHYSICAL LAYER DEPLOYED FOR WIRELESS SENSOR NETWORK

...ne of the key factors is antenna design and other factors include physical layer parameters including delay that can contribute critically in defining the quality. Various antenna designs are incorporated in ns-2 simulation environment along with different physical layer parameters and their impact is assessed and evaluated. This work also demonstrates the compatibility between ns-2, network simulation en...

Gulzar Ahmad*, Sahibzada Faheem*, Amjad Ullah*, Waqar Shah*, S.M. Majid Ashraf*

COMPARATIVE STUDY OF RELAY PROTOCOLS USING SIMULATION

...patial diversity or antenna diversity. The implementation of the cooperative relaying systems involves less hardware and low complexity but gives comparable performance and diversity gains to the actual multiple antenna systems. The aim of this paper is to compare various techniques used in cooperative relaying protocols. The performance is evaluated in terms of average symbol error under various ranges o...

Gulzar Ahmad1, M. Inayatullah Babar2

AN EFFICIENT PATCH ANTENNA WITH IMPROVED BANDWIDTH FOR FUTURE APPLICATIONS

...nt demerits of the patch antenna like low bandwidth and low efficiency have been addressed. A wideband and efficient microstrip patch antenna of 9×18mm2 size has been proposed for satellite and other fields of communications in future. The size of the antenna is very small and will definitely require a small space in the electronic equipment. An efficient substrate mat...

Adnan Ali Khan,* and Shahrukh Khalid**

CAPACITY ESTIMATION OF SIMO SYSTEMS IN THE PRESENCE OF CO-CHANNEL INTERFERENCE

...e employment of multiple antennas at the receiver can significantly improve the performance of the system. The capacity limits defined by MRC analysis are found within the estimated values of capacity using simulation. It is observed that increasing cell size and re-use distance decrease the effect of co-channel interference, however, the overall area spectral efficiency (ASE) of the system reduces due to the increase in cellular coverage a...

Muhammad Farooq, Shahid Bashir* and Salman Ilahi Siddiqui

Beam Steerable and Frequency Reconfigurable Antenna Array for 5G Mobile Networks

...frequency reconfigurable antenna for 5G communication system using three 1×8 element antenna arrays with defected ground structure has been presented. Frequency reconfigurability has been achieved by placing two switches inside an etched slot on patch antenna, which resulted in a matched bandwidth of 5.29 GHz (24.13 to 29.42 GHz). Beam steering has been achieved by placing the propos...

Design of a Patch Antenna on Different Substrates for Higher Frequencies Applications

Gulzar Ahmad*, Muhammad Bilal Khan, Junaid Bahadar Khan and Faheem Ali

...b>: The microstrip patch antennas offered in this research exposure was designed and simulated on three different substrate materials to investigate its performance for its employment in future higher frequencies wireless applications in general and 5G cellular applications in particular. In the past, researchers employed different dielectric substrates to analyze microstrip patch antenna in low frequency range. In the prese...

Development of Prototype Microwave Radar-based Imaging System for Breast Cancer Detection

Humza Sami¹, Mahnoor Sagheer¹, Muhammad Amir Altaf¹, Javaid Iqbal² and Muhammad Zubair^1,*

...r images. An UWB Vivaldi antenna is used in the bandwidth of 2-6 GHz to detect and localize the small tumors. The prototype hardware setup uses two Vivaldi antennas, one as transmitter and other as receiver for scanning. The distance between phantom and antennas is kept almost 20 cm. The scattered signals from the high contrast objects emulating the tumor characteristics have been processe...

Colour and Distributional Pattern of Callaspidia notata (Boyer de Fonscolombe, 1832) (Hymenoptera: Figitidae: Aspicerinae) from Pakistan

Ammara Gull-e-Fareen^1,2, Imran Bodlah^1,*, Muhammad Adnan Bodlah³, Muhammad Tariq Rasheed¹, Habib Ali⁴ and Muhammad Asif⁵

...edicel and basal part of antennal segment 3 slightly darker than remaining segments, scutellum and mesopleura mostly dark reddish with some darker areas, legs also reddish brown except tarsal segments lighter in colouration. Suspected trophic associations with Ischiodon scutellaris (F.) via Aphis nerii onCalotropis procera (Ait.) Ait and Tinocallis kahawaluokalani (Kirkaldy) on Lagerstroemia indica have been given. ...

Comparison of Mating Behavior of Four Species of Oxyinae (Acrididae: Orthoptera)

Riffat Sultana¹*, Nuzhat Soomro², Santosh Kumar³ and Ahmed Ali Samajo²

...1) sexual recognition by antennation; (2) courtship with male turning his abdomen towards the female performing mediolateral antennae vibration and jerking its body antero-posteriorly. We quantified elapsed time of each behavioral sequence i.e. age of maturation, duration of pre-copulatory and mating, interval between each mating, length of copulation, and number of mating in entire life of insect and also discussed i...

Identification and Expression Patterns of Chemosensory Genes in Male and Female Wax Moths, Galleria mellonella

Shuang Yang^1,2, Huiting Zhao³, Xuewen Zhang², Kai Xu¹, Lina Guo¹, Yali Du¹ and Yusuo Jiang^1,*

...ing was conducted on the antennae of male and female greater wax moths to assess the differential expression patterns of chemosensory genes and better understand the underlying olfactory mechanism. In the results, a total of 121 chemosensory gene transcripts were identified, including 37 odorant-binding proteins, 35 chemosensory proteins, 33 olfactory receptors, 14 ionotropic receptors and 2 sensory neuron membrane proteins. The expression patterns of these ge...