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"The ridge waveguide, which is a rectangular waveguide with one or more metal inserts (ridges), is an important transmission line in microwave engineering, now widely used in commercial electronics and communications devices. This book collects together much of the work of Professor Helszajn, an international authority in the field, and will enable the reader to have direct access to this important work without need for exhaustive search of research papers. Generously illustrated, it is likely to become the definitive reference source on this topic."

"Microwave filters are vital components in a huge variety of electronic systems, including mobile radio, satellite communications and radar. This is a thorough, graduate-level text which provides a single source for filter design including basic circuit theory, network synthesis and the design of a variety of microwave filter structures. The philosophy is to present design theories followed by specific examples with numerical simulations of the designs, with pictures of real devices wherever possible. The book is aimed at designers, engineers and researchers working in microwave electronics who need to design or specify filters."

"Harmonisa pada saat ini menjadi perhatian karena memiliki dampak yang dapat merugikan pada sistem tenaga listrik. Harmonisa adalah permasalahan kualitas daya yang berupa distorsi terhadap gelombang tegangan dan arus akibat pemakaian beban non linier. Salah satu sumber harmonisa adalah saturable device. Motor induksi tiga fasa merupakan salah satu jenis saturable device. Saat motor induksi mencapai kondisi saturasi, maka hubungan tegangan dengan arus sudah tidak linier lagi. Sehingga motor induksi menghasilkan harmonisa tegangan dan arus ke sistem. Pada skripsi ini akan dianalisis pengaruh tegangan masukan dan torsi motor yang mempengaruhi besarnya harmonisa yang dihasilkan oleh motor induksi tiga fasa. Kenaikan tegangan masukan dan torsi akan menaikan besar THD tegangan dan THD arus. Selain itu, harmonisa urutan yang doniman muncul adalah harmonisa urutan ke-2, ke-3, dan ke-5. Lalu dirancang single-tuned passive filter untuk mereduksi distorsi harmonisa dengan beberapa variasi filter untuk mendapatkan filter yang paling optimal. Didapatkan penurunan presentase THD-i paling optimum sebesar 23,89 , dengan spesifikasi nilai kapasitor sebesar 7313 ?F dan nilai induktor untuk orde-2, orde-3, dan orde-5 masing-masing sebesar 0,382 H, 0,164 H, dan 0,578 H.

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Harmonics at this time of concern because it has an impact that could be problem to the power system. Harmonics are power quality problems such as distortion of voltage and current waves due to the use of non linear load. One source of harmonics is saturable device. Three phase induction motor is one kind of saturable device. When an induction motor reaches saturation, the voltage to the current relationship is not linear anymore. So that the induction motor generates voltage and current harmonics to the system. In this thesis analyzed the effect of input voltage and torque motor that affect the amount of harmonics generated by a three phase induction motor. The increase in input voltage and torque will be a large increase THD voltage and current THD. In addition, the order harmonics doniman order harmonics arise is the 2nd, 3rd, and 5th. Then designed single tuned passive filters to reduce harmonic distortion with some variation filter to get the most optimal filter. Obtained decline in the percentage of THD i most optimum of 23.89 , with the specification value of 7313 F capacitor and inductor values for order 2, 3 order and order 5 each at 0,382 H, 0,164 H and 0,578 H."

""Pozar's new edition of Microwave Engineering includes more material on active circuits, noise, nonlinear effects, and wireless systems. Chapters on noise and nonlinear distortion, and active devices have been added along with the coverage of noise and more material on intermodulation distortion and related nonlinear effects. On active devices, there's more updated material on bipolar junction and field effect transistors.New and updated material on wireless communications systems, including link budget, link margin, digital modulation methods, and bit error rates is also part of the new edition. Other new material includes a section on transients on transmission lines, the theory of power waves, a discussion of higher order modes and frequency effects for microstrip line, and a discussion of how to determine unloaded"--Provided by publisher."

"ABSTRAKBand Pass Filter (BPF) memiliki peran penting dalam banyak aplikasi RadioFrekuensi (RF). BPF digunakan untuk memisahkan frekuensi yang berbeda. Hal inidisebabkan Spektrum elektromagnetik merupakan sumberdaya terbatas sehinggaharus dibagi. BPF digunakan untuk memilih sinyal RF dalam frekuensi kerjanya.Berbagai aplikasi komunikasi nirkabel terus muncul dan mengharapkan kinerja filterRF dengan kinerja yang tinggi dan ukuran yang lebih kecil. Proyek ini mempelajariprinsip mikro-strip bandpass RF filter. Metode yang digunakan Tangga dan Hairpin.Jenis Chebysev dengan orde 5 dan ripple sebesar 0,01 dB. Sistem ini disimulasikandalam software Desain Advanced System (ADS), kemudian di pabrikasi dan diukuruntuk memvalidasi desain. Tujuan penelitian ini adalah untuk merancang Microstripfilter bandpass untuk Automatic Dependent Surveilance Broadcast (ADS-B)dengan Frekuensi Pusat 1090 MHz menggunakan Ladder dan Metode Hairpin dankemudian membandingkan kedua metode untuk memperoleh kinerja yang lebihtinggi dan ukuran yang lebih kecil.

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ABSTRACTBand Pass Filters has an important role in many Radio Frequency (RF) applications.They are used to separate different frequencies. The electromagnetic spectrum islimited and has to be shared; filters are used to select the RF signals within assignedspectral limits. Emerging applications such as wireless communications continue tochallenge RF filters with ever more stringent requirements—higher performance andsmaller size. This project studied the principle of micro-strip RF bandpass filter. Themethod used the Ladder and Hairpin. The Chebysev type with order 5 and ripple of0.01 dB was used. The system is simulated in software Advanced Design System(ADS), fabricated and measured for validate the design. The objectives are todesign Micro-strip bandpass filter for Automatic Dependent Surveilance Broadcast(ADS-B) with Frequency Center 1090 MHz using Ladder and Hairpin Method andthen compare the both methods for obtain higher performance and smaller size."