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161	Chapter 5 Offset-fed Parabolic Dishes Paul Wade W1GHZ ©1998,1999 Appendix 5A — Common offset dishes I’ve accumulated a collection of small offset dishes over the past few years. Many of them came without any informa Add to Reading List Source URL: www.qsl.net Language: English - Date: 1999-10-15 22:50:28
162	On n On On HeZ HeZ HZHZ ZZ O O He HeHZZ Onnn( l(le l(eili (e li Gavok GavGok GaveG kaG Add to Reading List Source URL: www.qsl.net Language: English - Date: 2000-05-31 15:34:36
163	7.2.8 Frequency sensitivity To evaluate the effect of frequency error on the antenna performance, I also calculated the radiation patterns for the 16-slot antenna at 9.0 GHz andGHz. The resulting elevation patter Add to Reading List Source URL: www.qsl.net Language: English - Date: 2001-07-09 15:22:34
164	Chapter 9 ANTENNA RANGE MEASUREMENTS Paul Wade N1BWT © 1994,1998 Hams have been measuring antennas for many years at VHF and UHF frequencies, and have seen marked improvement in antenna designs and performance as a res Add to Reading List Source URL: www.qsl.net Language: English - Date: 2000-05-31 15:32:53 Antenna Reference antenna Horn antenna Joint Electronics Type Designation System Parabolic antenna Okumura Model Telecommunications engineering Technology Electronic engineering
165	On n On On HeZ HeZ HZHZ ZZ O O He HeHZZ Onnn( l(le l(eili (e li Gavok GavGok GaveG kaG Add to Reading List Source URL: www.qsl.net Language: English - Date: 2000-05-31 15:37:39 Satellites Antennas Radio electronics Parabolic antenna Antenna Reflector Radiation pattern Feed horn Horn antenna Telecommunications engineering Electronic engineering Technology
166	6.1.5 Dish Patterns with Axial Displacement Error When I first talked about axial displacement error, one of the first questions that arose was “Where does the power go when the gain is reduced?” The best way to answ Add to Reading List Source URL: www.qsl.net Language: English - Date: 2000-05-31 15:37:41 Technology Parabolic antenna Horn antenna Antenna measurement Antenna Feed horn Radiation pattern Reflector Beamwidth Telecommunications engineering Electronic engineering Satellites
167	Chapter 2 ELECTROMAGNETIC HORN ANTENNAS Paul Wade N1BWT © 1994,1998 A horn antenna is the ideal choice for a rover station. It offers moderate gain in a small, rugged package with no adjustments needed, and has a wide Add to Reading List Source URL: www.qsl.net Language: English - Date: 2000-05-31 15:41:36
168	Chapter 6 Feeds for Parabolic Dish Antennas Paul Wade W1GHZ ©1998,1999 Appendix 6A — Parabolic Dish Gain and Beamwidth One common shortcut in antenna gain measurements is to approximate the gain from the 3 dB Add to Reading List Source URL: www.qsl.net Language: English - Date: 2000-05-31 15:43:11
169	7.4 Slotted-cylinder antennas As illustrated in Figure 7-3, a slot in an infinite plane is equivalent to a dipole of the same dimensions. In practice, a sheet much bigger than the slot is a nearly infinite plane. Kraus25 Add to Reading List Source URL: www.qsl.net Language: English - Date: 2001-07-09 15:30:43
170	7.2.7 Performance Enhancements The antenna patterns we saw in Figures 7-8 and 7-9 are not really good omnidirectional antennas, with significant variation in gain in different directions — as much as 10 dB. Furthermore Add to Reading List Source URL: www.qsl.net Language: English - Date: 2001-07-09 15:12:56 Radar Radio electronics Antennas Side lobe Slot antenna Radiation pattern Phased array Omnidirectional antenna Telecommunications engineering Electronic engineering Technology

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