Digital Frequency Multipliers Using Multisection Two-Strip Coupled Line

1981 ◽  
Vol 29 (2) ◽  
pp. 118-122 ◽  
Author(s):  
I. Sakagami ◽  
N. Miki ◽  
N. Nagai ◽  
K. Hatori
Keyword(s):  
Frequency Multipliers ◽  
Coupled Line ◽  
Digital Frequency

Dynamic transfer properties of frequency multipliers

1986 ◽  
Vol 133 (3) ◽  
pp. 175
Author(s):  
A. Jacob ◽  
E. Burkert ◽  
H. Brauns ◽  
K. Schünemann
Keyword(s):  
Frequency Multipliers ◽  
Transfer Properties

Microstrip Coupled Line Filters with Spurious Band Suppression

PIERS Online ◽  
2007 ◽  
Vol 3 (6) ◽  
pp. 948-950 ◽  
Author(s):  
Maria del Castillo Velazquez-Ahum ◽  
Jesus Martel-Villagr ◽  
Francisco Medina
Keyword(s):  
Coupled Line

A UHF Compact Complex Impedance-transforming Balun with High Isolation

2020 ◽  
Vol 13 (8) ◽  
pp. 1135-1144
Author(s):  
Kittipong Nithiporndecha ◽  
Chatrpol Pakasiri
Keyword(s):  
Complex Impedance ◽  
Output Port ◽  
Reflection Coefficients ◽  
Coupled Line ◽  
High Isolation ◽  
Line Structure ◽  
Source Impedance ◽  
Phase Balance ◽  
High Output

Background: A compact complex impedance-transforming balun for UHF frequencies, which is based on a coupled-line structure that matched all ports and provided high output port isolation, was designed in this paper. Methods: A lumped component transformation was used to minimize circuit size. The implemented circuit operated at 433 MHz with the reflection coefficients less than -16 dB at all ports, 0.22 dB amplitude balance and 180° phase balance at the output ports. The signal coupling between the output ports was -16.8 dB. The circuit size is small at 0.032λ. Results: Complex impedance-transforming baluns were designed to operate at 433 MHz. The source impedance at port 1 was set at Zs = 12 - j12Ω and the load impedances at port 2 and 3 were set at ZL = 80 + j30Ω. Conclusion: A compact complex impedance-transforming balun at UHF frequency, with all ports matched and high isolations, was designed and illustrated in this paper.

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