Shina Tech offers "Passive Components in RF Circuit" product.
: RF Power Divider, Power Splitter, etc
(It can cope with various specifications
such as 2-way, 3-way, 4-way, 50Ohm and 75 Ohm.)
Various "Active Components in RF Circuit" modules are available for sale,
including "Reference Signal Generator with OCXO".
Shinatech has a "use if frequency band" and "high reliability product" for the 5G era,
with customizable solutions at lower than the market prices.
These products are applicable to mobile and broadband wireless systems.