اطہر صدیقی
اطہرؔ صدیقی(۱۹۳۵ئ۔پ) کا اصل نام محمدیسیٰن صدیقی اور اطہرؔ تخلص کرتے تھے۔ آپ چوہان حال برہان پور تحصیل پسرور میں پیدا ہوئے۔ آپ معروف شاعر پروفیسر حفیظ صدیقی کے بھائی تھے۔ حفیظ صدیقی کی راہنمائی میں اطہر نے زمانہ طالب علمی میں شاعری کا آغاز کیا تو ان کا کلام ملک کے معروف ادبی رسائل و جرائد میں شائع ہونے لگا۔(۸۸۴)
اطہرؔ کا پہلا شعری مجموعہ’’ کاکل غم‘‘ غزلوں اور نظموں پر مشتمل ہے جو۱۹۸۷ء میں شائع ہوا۔دوسرامجموعہ کلام’’ذوق سفر‘‘ کے نام سے ۱۹۸۹ء میں صدیقی پبلی کیشنز لاہور سے طبع ہوا۔ یہ مجموعہ غزلیات پر مشتمل ہے۔ تیسرا شعری مجموعہ’’آبرئوے غم‘‘۱۹۹۰ء میں صدیقی پبلی کیشنز لاہور سے شائع ہوا۔ یہ مجموعہ بھی غزلیات پر مشتمل ہے۔ چوتھا شعری مجموعہ ’’گردِ مسافت‘‘غزلیات اور نظموں پر مشتمل ہے۔
اطہر ؔصدیقی کی شاعری کا بڑا موضوع عظمت انسان ہے ۔وہ اپنی شاعری میں حضور ؐ کی ذات اقدس کے شیدائی نظر آتے ہیں۔ ان کے نزدیک حضرت محمدؐ کی ہستی عظمت انسان کی علامت ہے۔ اور وہی مثالیِانسان کا نمونہ ہیں۔انھوںنے نعت میں ہی نہیں بلکہ اپنی نظم اور غزل میں بھی عظمتِ انسان کی حقیقت کا اظہار کیا ہے۔
اطہرؔ کی شاعری عزم و ہمت ،جوش ،جواں جذبوں ،جستجو اور بلند حوصلوں سے بھر پور شاعری ہے ۔وہ اپنی شاعری میں کہیں بھی پست ہمت نظر نہیں آتے۔ان کے ہاں جوش اور جذبات کی شدت قاری کے حوصلے کو بلند کرنے کا سامان فراہم کرتی ہے۔ وہ عشق و جنون کے شاعر ہیں ۔یہ عشق و جنون انھیں عظیم کارنامے سر انجام دینے کے لیے ہر وقت تازہ دم رکھتا ہے۔ کچھ اشعار ملاحظہ :
ذرے ذرے سے پوچھ دیکھا ہے
دشت در دشت کون رہتا ہے
کون رہتا ہے لا مکاں میں اب
کس کی رعنائیوں...
The Prophet (P.B.U.H), born in 571 A.D at Makkah, came to enlighten this world with divine guidance and to transform this world from the clutches of immoralities and sins to pinnacle of piety and ethics. He lived in this world for almost 63 years and brought revolutionary changes which no one even could think of. But this task was not easy, he suffered the most and sacrificed everything to raise and proclaim the words of Allah. He set an example for others to follow. This article is all about his life in Madinah with regard to his dealing with the arch enemies of Islam who were his own natives “The Makkans”. Prophet (P.B.U.H) settled in Madinah and established Islamic society so as to enable everyone to spend life in accordance with the divine guidance. Here, he signed treaty with the Jews created Muakhaat for Mohajirin and Ansars. On the other hand, Makkans could not stand this development. So, they imposed battles on Muslims and Muslims had no options except Jihad. The Holy Prophet (P.B.U.H) fought many battles with Makkans. However, no innocent was executed during these incidences. This shows the dynamic teachings of Islam. This article gives brief events of these battles besides revelations which came to Prophet in the line of duty to motivate and guide Muslims. It took almost eight years for Prophet to excel Makkans.
Multiple Input, Multiple Output (MIMO) antenna technology is being used extensively to meet the current wireless standards. It consists of multiple transmit and receive antennas to increase the signal capturing power and throughput. However, to achieve these goals, it is necessary to keep the coupling between antenna elements in an acceptable range so that multiple signals can effectively be resolved. In most of the existing MIMO antennas, separate antenna elements are used for occupying spatial diversity technique. In such a diversity scheme, isolation enhancement techniques may effectively be applied between these antenna elements. However, in spatial diversity, multiple antenna elements occupy more space to be accommodated in the devices with size constraints. Moreover, at higher frequencies, losses of metallic antennas become severe which significantly degrade the performance of the MIMO system. Recently, a possible alternative to these metallic antennas has been introduced in the form of dielectric resonator antennas (DRAs). DRAs offer potential advantage of high radiation efficiency and negligible conductor losses. DRA supports more than one resonant modes at different frequency bands, enable to meet the requirements of different applications with a unique device. Multimode excitation feature in the DRA makes it a suitable choice for use in multiband MIMO applications. However, more critical and challenging issue is coupling between modes excited in the single DR volume, especially when used for dual-band MIMO applications. This is the reason that dual-band MIMO DRAs are rarely found in literature. This thesis is composed of two single-band and four dual-band MIMO DRA designs. The first single-band MIMO DRA is excited by means of symmetric microstrip feeding and other DRA is excited by means of hybrid feeding mechanism. It is observed that hybrid feeding provides more isolation between antenna ports. This concept is extended to the dual-band MIMO DRA designs using similar and hybrid feeding mechanisms. The first dual-band MIMO design consists of symmetric microstrip slot feeding for pattern diversity at both WiMAX and wireless local area network (WLAN) bands. In the second design, compactness is achieved by stacking the DRA with high a permittivity material. Orthogonal modes at the two bands are xi excited in the DRA by coaxial probes and coupling between two ports is reduced by means of defected ground structure (DGS). Almost 80 % volume reduction has been achieved in this design by means of stacking approach. The last two designs presented in this work are based on hybrid feeding mechanism. Both of the dual-band MIMO DRAs have also been investigated for geometric scalability of the designs. As the resonant frequency of the DRA is inversely related to its dimensions, therefore, same design with different dimensions can be operated on other frequency bands as well. This property is termed as geometric or size scalability of the design. This re-sizing or scalability of the dual-band MIMO DRAs is a very interesting property and has not yet been investigated in literature. Frequency ratio is the ratio of higher band to the lower band which is an important parameter in the dual-band designs. Frequency ratio as a result of design scalability has also been presented in this work