title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ ÑÐ°ÑÑÑÑ ÑÐ²ÐµÑÐ´Ð¾ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÐºÐ»ÑÑÐµÐ²Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾ÑÐ° Ð´Ð»Ñ Ð ÐÐÐ£ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 5 ÐºÐÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development and calculation of a solid-state off-again mode modulator for a 5 kW radio transmitter
Creators: name: ÐÐ±Ð°ÐµÐ², ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÐºÐ¾ÑÐ¾ÑÐºÐ¾Ð²Ð¾Ð»Ð½Ð¾Ð²ÑÐ¹ (ÐºÐ²) Ð¿ÐµÑÐµÐ´Ð°ÑÑÐ¸Ðº
Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾Ñ ÐºÐ»Ð°ÑÑÐ° D
drm (digital radio mondiale)
ÑÐ¸ÑÐ¾ÑÐ½Ð¾-Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ½Ð°Ñ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸Ñ (ÑÐ¸Ð¼)
ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½Ñ Ð¿Ð¾Ð»ÐµÐ·Ð½Ð¾Ð³Ð¾ Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ (ÐºÐ¿Ð´)
Ð¼ÐµÑÐ¾Ð´ ÑÐ°Ð·Ð´ÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÐ¸Ð»ÐµÐ½Ð¸Ñ ÑÐ¾ÑÑÐ°Ð²Ð»ÑÑÑÐ¸Ñ
Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ° ÑÐ°ÑÑÐµÑÐ° Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾ÑÐ°
short-wave (sw) transmitter
class D modulator
pulse-width modulation (pwm)
efficiency
envelope extraction and restoration (eer)
modulator calculation procedure

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾ÑÐ° ÐºÐ»Ð°ÑÑÐ° D Ð´Ð»Ñ ÑÐ²ÐµÑÐ´Ð¾ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ Ð¿ÐµÑÐµÐ´Ð°ÑÑÐ¸ÐºÐ° Ñ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 5 ÐºÐÑ Ð² Ð¿Ð¸ÐºÐ¾Ð²Ð¾Ð¹ ÑÐ¾ÑÐºÐµ. ÐÐ½ Ð¾Ð±Ð»Ð°Ð´Ð°ÐµÑ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑÑ ÑÐ°Ð±Ð¾ÑÐ°ÑÑ Ð² ÑÐµÐ¶Ð¸Ð¼Ð°Ñ Ñ Ð°Ð¼Ð¿Ð»Ð¸ÑÑÐ´Ð½Ð¾Ð¹ Ð¸ Ð¾Ð´Ð½Ð¾Ð¿Ð¾Ð»Ð¾ÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¸ÐµÐ¹ Ð² ÑÐ¸ÑÑÐ¾Ð²Ð¾Ð¼ ÑÐ¾ÑÐ¼Ð°ÑÐµ DRM. Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð¼Ñ Ð¿Ð¾Ð´Ð¾Ð±ÑÐ°Ð»Ð¸ ÑÐ°Ð¼ÑÑ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÑ ÑÑÐµÐ¼Ñ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾ÑÐ°, ÑÐ´ÐµÐ»Ð°Ð»Ð¸ ÑÐ°ÑÑÐµÑ ÑÑÐ¾Ð³Ð¾ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾ÑÐ°, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð»Ð¸ Ð´Ð°Ð½Ð½ÑÑ ÑÑÐµÐ¼Ñ Ð¸ Ð²ÑÑÐ¸ÑÐ»Ð¸Ð»Ð¸ ÐµÐµ ÐÐÐ.
ÐÐ¾Ð´Ð¾Ð±ÑÐ°Ð½Ð½Ð°Ñ Ð½Ð°Ð¼Ð¸ ÑÑÐµÐ¼Ð° Ð¾Ð±Ð»Ð°Ð´Ð°ÐµÑ Ð½Ð°Ð¸Ð»ÑÑÑÐ¸Ð¼Ð¸ ÑÐ½ÐµÑÐ³ÐµÑÐ¸ÑÐµÑÐºÐ¸Ð¼Ð¸ Ð¸ Ð¼Ð°ÑÑÐ¾Ð³Ð°Ð±Ð°ÑÐ¸ÑÐ½ÑÐ¼Ð¸ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÑÐ¼Ð¸ Ð¸Ð· Ð²ÑÐµÑ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð½ÑÑ Ð½Ð°Ð¼Ð¸ Ð² ÐÐÐ . ÐÑ ÑÐ±ÐµÐ´Ð¸Ð»Ð¸ÑÑ Ð² ÑÐ¾Ð¼, ÑÑÐ¾ ÐµÑÑÑ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÑ Ð¿Ð¾ÑÑÑÐ¾ÐµÐ½Ð¸Ðµ Ð²ÑÑÐ¾ÐºÐ¾ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾ÑÐ¾Ð² Ð±ÐµÐ· Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð¾ÑÐ¾Ð³Ð¾ÑÑÐ¾ÑÑÐ¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð²Ð°ÐºÑÑÐ¼Ð½ÑÑ Ð¿ÑÐ¸Ð±Ð¾ÑÐ¾Ð² Ð´Ð»Ñ Ð²ÐµÑÐ°Ð½Ð¸Ñ Ð² ÐÐ Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½Ðµ Ð±ÐµÐ· Ð¾ÑÐ¾Ð±ÑÑ Ð¿Ð¾ÑÐµÑÑ Ð² Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸. ÐÐ½ÐµÐ´ÑÐµÐ½Ð¸Ðµ Ð² Ð½Ð°ÑÑÐ¾ÑÑÐµÐµ Ð²ÑÐµÐ¼Ñ ÑÐ°ÐºÐ¸Ñ Ð²ÑÑÐ¾ÐºÐ¾ÑÑÑÐµÐºÑÐ¸Ð²Ð½ÑÑ Ð¿ÐµÑÐµÐ´Ð°ÑÑÐ¸ÐºÐ¾Ð², Ð¾ÑÐ²ÐµÑÐ°ÑÑÐ¸Ñ ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½ÑÐ¼ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸ÑÐ¼, Ð±ÑÐ´ÐµÑ Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾ Ð² Ð Ð¾ÑÑÐ¸Ð¸ Ñ ÑÐ¾ÑÐºÐ¸ Ð·ÑÐµÐ½Ð¸Ñ ÑÐ¾ÐºÑÐ°ÑÐµÐ½Ð¸Ñ Ð¿Ð¾ÑÑÐµÐ±Ð»ÑÐµÐ¼Ð¾Ð¹ ÑÐ»ÐµÐºÑÑÐ¾ÑÐ½ÐµÑÐ³Ð¸Ð¸ Ð¸ Ð¿Ð¾Ð²ÑÑÐµÐ½Ð¸Ñ ÐºÐ°ÑÐµÑÑÐ²Ð° Ð·Ð²ÑÑÐ°Ð½Ð¸Ñ ÑÑÐ°Ð½ÑÐ»Ð¸ÑÑÐµÐ¼ÑÑ ÑÐ°Ð´Ð¸Ð¾Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼.
Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð¼Ñ Ð¿Ð¾Ð»ÑÑÐ¸Ð»Ð¸ Ð¼Ð¾Ð´ÑÐ»ÑÑÐ¾Ñ Ñ ÐÐÐ 96%.
description: The given work is devoted to the development of a class D modulator for a solid-state transmitter with a power of 5 kW at the peak point. It has the ability to work in modes with amplitude and single-band modulation in digital DRM format. In the course of work, we selected the most optimal modulator circuit, made a calculation of this modulator, and also simulated this circuit and calculated its efficiency.
The selected circuit has the best energy efficiency indicator and weight and size indicator of all that we considered in the graduate work. We made sure that it is possible to build highly efficient modulators without the use of expensive electro-vacuum devices for broadcasting in the SW band without any significant loss in performance. The introduction of such highly efficient transmitters that meet modern requirements will be relevant in Russia in terms of reducing energy consumption and improving the sound quality of broadcast radio programs.
As a result of work, we received a modulator with an efficiency of 96%.