University of Massachusetts at Amherst
ECE 585 Microwave Engineering II
Homework Assignments and Solutions
Spring 2005 Lecture Schedule
The class lecture notes can be downloaded as Adobe PDF files. You will need Adobe Acrobat Reader installed on your machine. If you don't already have it, you can download it free by clicking on the link image below.
| Date | Lect.
No. |
Lecture Topic | PDF Document | PDF Size |
|
| Thur, Jan 27 | 1 |
3-port
and 4-port networks, lossless networks; hybrid quadrature couplers;
lossless T-junction power divider; resistive T-junction power divider |
Lect Notes 1 | 792
K (11 pp.) |
|
| Tue, Feb 1 | 2 |
Wilkinson power dividers; Bethe hole directional couplers | Lect Notes 2 | 816
K (17 pp.) |
|
| Thur Feb 3 | 3 |
Quadrature
hybrids; even-odd mode analysis; coupled-line directional coupler;
theory of coupled lines |
2.5
M (15 pp) |
||
| Tue Feb 8 | 4 |
Design of single-section coupled-line coupler; Lange coupler; rat-race coupler 4A
- Suppl. notes on analysis of rat-race hybrid |
920
K (4
pp) |
||
| Thur Feb 10 | 5 |
Periodic
structures; Brillioun diagram; stopbands and passbands; image parameter method; image impedances |
1.1
M (17 pp.) |
||
| Tue Feb 15 | 6 |
Constant-k,
m-derived filters; composite filters; insertion loss method of filter design; maximally flat filters; equal ripple designs |
Lect Notes 6 | 1.0
M (15 pp) |
|
| Thur Feb 17 | 7 |
Low-pass
filter prototypes; bandpass filter designs; group delay of a filter;
Richards transforms; Kurodas Identities |
Lect Notes 7 | 1.0
M (17 pp) |
|
| Tue Feb 22 | 8 |
Using Transmission Line Utility (TRL) tool in Designer; stripline example; fabrication process for stripline; coupled-line filters and design procedure; example with 5-section filter; CAD simulation of coupled-line filters using Designer; metallization effects. | Lect Notes 8 (rev) | 0.55
M (19 pp) |
|
| Thur Feb 24 | 9 |
Stepped impedance filters, low-pass; example LP 4th-order max. flat filter using shunt stubs; how to use Richards' transform, Kuroda identities; simulation in Designer | Lect Notes 9 | 590
K (12 pp) |
|
| Tue Mar 1 | 10 |
Lumped element HP filters; modeling dielectric loss and metallization loss; 6 GHz BP coupled-line filter; effect of OPEN element statement; effect of conductor material | Lect Notes 10 | 548
K (13 pp) |
|
| Thur Mar 3 | 11 |
Filter design optimization using Ansoft Designer; illustrated using Text Example 8.8, a 4-section coupled-line filter with 0.5 dB equal-ripple response, implemented in microstrip, 20 mil Duroid 5880. Return loss and insertion loss response before and after length optimization, using circuit schematic model. Comparison to results with EM simulator model. |
Lect Notes 11 (rev) |
1.0
M |
|
| Tue Mar 8 | 12 |
Lecture 12-Supplement. This shows how to design a 4th-order low-pass filter with 0.5 dB equal ripple, with implementation using only shunt stubs. Shows how to use Richards' Transforms and Kuroda's Identities. Review for midterm exam. | Lecture 12 | ||
| Thurs Mar 10 | ** | No class today | |||
| Thur Mar 10 | on-campus students: Midterm Exam (6:30 - 8:30 p.m.), location TBA |
||||
| Thurs Mar 17 | NTU/PEEAS students: Midterm Exam due (FAX or postmark) | ||||
| Mar 13 - 18 ****** SPRING BREAK ****** | |||||
| Tue Mar 22 | 13 |
Ferrite devices; magnetic materials; magnetic flux density; magnetic field intensity, permeability; classification of magnetic materials; magnetic moment; magnetic torque and gyromagnetic ratio; net magnetization of a volume of many magnetic moments; magnetization of ferrimagnetic materials; saturation magnetization; B-H curves of magnetic materials; interaction of RF signals with ferrites under a d.c. magnetic bias; magnetic susceptibility and tensor permeability; lossy magnetic materials; | Lecture 13 | 452
K (16 pp) |
|
| Thur Mar 24 | 14 |
Plane wave propagation in ferrite media; RF propagation parallel to d.c. bias field; review of circular polarization; RHCP wave propatation in ferrites; LHCP wave propagation in ferrites; decomposition of a linearly polarized wave into RHCP and LHCP components; Faraday rotation; RF propagation perpendicular to d.c. bias field; ordinary and extraordinary waves. |
Lecture 14 | 832
K (14 pp) |
|
| Tue Mar 29 |
15
|
Ferrite isolators; isolator types: (Faraday rotation isolator, resonance isolator; field displacement isolator). propagation in ferrite-loaded rectangular waveguides; design of resonance isolator in a waveguide; reverse attenuation and forward attenuation; Lax Figure of Merit; design example for H-plane resonance isolator at X-band; design considerations for field displacement isolators; ferrite phase shifters; reciprocal Faraday rotation phase shifters; Reggia-Spencer reciprocal phase shifter; non-reciprocal latching phase shifter |
|
952
K |
|
| Thur Mar 31 | 16 |
Noise in microwave systems; blackbody radiation; Plancks Law; Rayleigh-Jeans Law; Nyquist formula for noise power; equivalent noise temperature; equiv. noise temp. of an amplifier; noise figure; relation of noise fig. to equiv. temp. | Lect Notes 14-rev | 1.8
MB (22 pp) |
|
| Tue Apr 5 | 17 |
Noise
of a cascaded system; microwave noise power convention; NF of a superhet receiver; detectors and mixers; diodes as RF detectors; mixers in receivers |
Lect Notes 15 | 1.54
M (21 pp) |
|
| Thur Apr 7 | 18 |
Distortion in nonlinear devices; harmonic distortion and intermodulation distortion; 1 dB gain compression point; dynamic range of amplifiers; IMD in 3rd-order products for two-tone inputs to amplifiers; 3rd-order intercept point Intro to transistor RF amplifiers; MESFETs and BJTs. |
|
900
K
|
|
| Tue Apr 12 | 19 |
Transducer power gain; amplifier stability criteria; stability circles on Smith Chart; conditions for maximum transducer gain; conditions for unconditional stability; design for specified gain. Ansoft Designer modeling of a FET amplifier |
1.53
M 208 K |
||
| Thur Apr 14 | 20 |
Design
of X-band MESFET amplifier; design fo max. gain; stability and max.
|
5.2
M |
||
| Tue Apr 19 | 21 |
Design
of low-noise transistor amplifiers; microwave diode and transistor
oscillators; conversion of common-source S-parameters to common-gate S-parameters; stability of common-gate FET amplifier |
Lect Notes 18 | 1.91
M (21 pp) |
|
| Thur Apr 21 | No class today | ||||
| Tue Apr 26 | 22 |
PIN
diode switches; PIN diode phase shifters 19A: GaAs FET amplifier with min. noise figure |
1.38
M (19 pp) |
||
| Thur Apr 28 | 23 |
Antennas; short dipoles; far-field antenna pattern of a short dipole;
main beam, beamwidth, sidelobes; aperture antennas; directivity; effective area of a receiving antenna; aperture efficiency |
Lect Notes 20 | 1.34
M (19 pp) |
|
| Tue May 3 | 24 |
Antenna
efficiency; antenna gain; gain relation to directivity; antenna noise temperature; antenna radiometric temperature; Friis transmission formula; microwave receiver noise; signal-to-noise ratios in 2-way communication links |
Lect Notes 21 | 1.32
M (18 pp) |
|
| Thur May 5 | 25 |
Radars; radar range equation; radar frequency bands; radar transmitter technology; radar cross section of small, medium, large objects; RCS of a metal sphere; pulse radar; CW radars; FM radars; final exam review. | Lect Notes 22 | 1.34
M (17 pp) |
|
| Tue May 10 | 26 |
Microwave radiometers; remote sensing applications; total power radiometer; airborne MW radiometers; noise equiv. delta-T; Dicke-switched radiometers; microwave propagation in the atmosphere; attenuation of MW signals by atmospheric gases; ionospheric propagation; microwave communication by satellites | Lect Notes 23 | 1.59
M (19 pp) |
|
| Thur May 12 | 27 |
Last class day. Review for final exam. | |||
| May XX | Final Exam - TBA | ||||
This page last updated on March 1, 2005 .