REFERENCES
- Coale (F S). A Travelling-Wave Directional Filter. IRE Trans. MTT-4, 4; 1956; 256–260.
- Weir (W B) & Adams (D K). Wideband Multiplexers Using Directional Filters. Microwaves. 8, 5; 1969; 44–50.
- Standley (R D). Frequency Response of Strip line Travelling Wave Directional Filter. IEEE Trans. MTT-11, 7; 1963; 264–265.
- Mathaei (G L), Young (L) & Jones (E M T). Microwave Filters, Impedance Matching Networks and Coupling Structures. 1964. McGraw-Hill. P 871.
- Sweep Frequency Group Delay Measurement. H/P Applications Note, 77–4, September, 1968.