The answer basically is yes. Broadband Radar, or as it is often referred to commercially, Solid State Radar, is basically magnetronless radar.
Something I found from 2008:
Magnetron based technology is very old and dirty to the frequency spectrum, it uses huge amounts of bandwidth and to a certain extent needs cleaning up. The International Telecommunications Union (ITU) has recognized this and allowed “new technology” to be used in the S-Band frequency spectrum allocation for marine radar – for example JRC’s SS Radar, Kelvin Hughes Sharp-Eye. This new technology is solid-state based and uses much less frequency spectrum for the transmission.
In addition it has to be recognized that a “marine frequency” is used in a marine environment - not a land use, therefore the mobile phone industry has made application to the ITU for the use of mobile phones to use part of the S-Band frequency marine allocation frequency as there are lots of areas of the World that are not considered marine that have populations wanting more and more mobile phone technology with ever increasing frequency useage, for example, large areas in USA, Asia and Europe.
In Europe, the UK has from 2010 indicated that they will introduce “Spectrum pricing” where users of frequency spectrum will pay for the use of the Spectrum. One of the frequencies they are looking at is mobile phones and the S-Band frequency. Estimates are that mobile phone industry will be willing to pay about $450 Million per year for licenses to use the frequency and that will be the thin end of the wedge as Governments around the World need more income from taxes and this is the invisible tax of frequency . No upkeep by Government and the money rolls in. So it is probably not a case of “if” but “when” - providing the UK Government scheme goes according to expectations.
For the marine industry, the ITU introduced new frequency spectrum in band and out of band emission levels as a recommendation about five years ago, for both X-Band and S-Band so manufacturers have been working around the World and all probably meet the requirements without too many difficulties. Commercial vessel size equipment is as not difficult to comply with, but small/pleasure craft radars are a bit more difficult, due to size of equipment and economic pricing issues.
X-Band is not seen to be needing to be modified to new technology radar at present, due to the fact that magnetron technology is needed for performance monitors, RACONS, SARTS (GMDSS) and other navigational aids, and the IMO requirement for at least one X-band radar to be on SOLAS vessels whereas an S-band radar installation is an option. It is difficult to see any great changes to radars in at least the next 20 years due to time/efforts necessary to change ITU rules, requirements and recommendations so no need to worry that radar will disappear.