Postgraduate entrance examination? It is recommended to look at the real questions over the years. It's simple. If people are in Xi 'an, the print shop next to the supermarket in the new campus of Xidian has real questions, as well as the final exam questions over the years. The real questions rarely change. It is enough to do the real questions well, and there is no need for special counseling books.

The reference book is antenna principle written by Wei He. You can download it here at/f/f/7242236.html. You'd better buy a book. You can't buy it in the market.

Look at the real questions and you will know that the basic knowledge in front is the most tested, such as gain, direction coefficient and so on. The calculation problem is antenna array, and the product theorem of pattern is used. At most, three-element array is tested. Deduction of non-entanglement formula in specialized courses.

Get a higher score. Very safe. 350+ is almost enough. This year, the direction of the 330 test antenna will be adjusted. Good luck!