DEVELOPMENT OF PPM-FOCUSED LOW-NOISE TRAVELING-WAVE TUBES FOR KU-, K-, AND KA-BAND.
Interim development rept. no. 1, 1 Jul-30 Sep 63.
MICROWAVE ELECTRONICS PALO ALTO CALIF
Pagination or Media Count:
Work during the reporting period included the following tasks. The initial gun design was completed. Jigs, fixtures, and special straightening techniques were made for cathodegun alignment. The RF performance of the tubes was studied, and a gold-plated helix design was chosen. The helix characteristic impedance variation for RF matching was studied, and the resultant impedance transformer design produced VSWR 2 from 10.5 to 16.5 Gc for four matched helices. The RF tests of existing MEC Ku- and Kaband tubes provided reference data for tube design. Modification of current MEC tubes will be possible. Preliminary design of the PPM-focusing array was completed. Author